Frank Schafmeister

Leistungselektronik und Elektrische Antriebstechnik (LEA)
schafmeister@lea.uni-paderborn.de
ID
71291

92 Publications

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[92]
2023 | Conference Paper | LibreCat-ID: 48352
Unruh R, Böcker J, Schafmeister F. An Optimized Third-Harmonic Injection Reduces DC-Link Voltage Ripple in Cascaded H-Bridge Converters up to 50% for all Power Factors. In: 2023 25th European Conference on Power Electronics and Applications (EPE’23 ECCE Europe). IEEE; 2023. doi:10.23919/epe23ecceeurope58414.2023.10264313
LibreCat | DOI | Download (ext.)
 
[91]
2022 | Conference Abstract | LibreCat-ID: 30347
Schafmeister F. Compensation of LF Common-Mode Noise by the internal DC/DC-Stage for transformerless On-Board Chargers at Three- and Single-Phase Operation. In: International Conference on Electric & Electronic in Hybrid and Electric Vehicles and Electric Energy Management (EEHE),.
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[90]
2022 | Conference Paper | LibreCat-ID: 30349
Förster N, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source Transistor Database and Toolbox as an Unified Software Engineering Tool for Managing and Evaluating Power Transistors. In: Proc. 37th IEEE Applied Power Electronics Conference (APEC). IEEE.
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[89]
2022 | Conference Paper | LibreCat-ID: 30350
Keuck L, Schafmeister F, Böcker J. Robust Hysteresis Control for LLC Resonant Converters Using a Fully Isolated Measurement Scheme. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE.
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[88]
2022 | Conference Paper | LibreCat-ID: 30844
Huber J, Wallmeier P, Pieper R, Schafmeister F, Kolar J. Comparative Evaluation of MVAC-LVDC SST and Hybrid Transformer Concepts for Future Datacenters. In: Proc. 9th IEEJ International Power Electronics Conference (IPEC). IEE Japan.
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[87]
2022 | Conference Paper | LibreCat-ID: 35125
Förster N, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source Transistor Database and Toolbox as a Unified Software Engineering Tool for Managing and Evaluating Power Transistors. In: 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2022. doi:10.1109/apec43599.2022.9773701
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[86]
2022 | Conference Paper | LibreCat-ID: 35127
Förster N, Piepenbrock T, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source FEM Magnetics Toolbox for Power Electronic Magnetic Components. In: PCIM Europe 2022; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2022:1-10. doi:10.30420/565822103
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[85]
2022 | Journal Article | LibreCat-ID: 44163
Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. LLC Resonant Converter Modulations for Reduced Junction Temperatures in Half-Bridge Mode and Transformer Flux in the On-the-Fly Morphing Thereto. IEEE Transactions on Power Electronics. 2022;37(11):13413-13427. doi:10.1109/tpel.2022.3180758
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[84]
2022 | Conference Paper | LibreCat-ID: 44164
Rehlaender P, Korthauer B, Schafmeister F, Böcker J. Experimental Demonstration of a 2.2kW Active-Clamp Converter for High-Current Wide-Voltage-Transfer Ratio Applications. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:P.1-P.11.
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[83]
2022 | Conference Paper | LibreCat-ID: 44161
Rehlaender P, Schafmeister F, Böcker J. Phase-Shift Modulation for Flying-Capacitor DC-DC Converters. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:1-9.
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[82]
2022 | Conference Paper | LibreCat-ID: 34176
Unruh R, Schafmeister F, Böcker J. Zero-Sequence Voltage Reduces DC-Link Capacitor Demand in Cascaded H-Bridge Converters for Large-Scale Electrolyzers by 40%. In: 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). IEEE; 2022.
LibreCat | Download (ext.)
 
[81]
2022 | Conference Paper | LibreCat-ID: 35126
Förster N, Hölscher J, Piepenbrock T, et al. An Open-Source FEM Magnetic Toolbox for Calculating Electric and Thermal Behavior of Power Electronic Magnetic Components. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:P.1-P.9.
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[80]
2021 | Conference Paper | LibreCat-ID: 29849
Strothmann B, Schafmeister F, Böcker J. Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487462
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[79]
2021 | Journal Article | LibreCat-ID: 29892
Rehlaender P, Schafmeister F, Böcker J. Interleaved Single-Stage LLC Converter Design Utilizing Half- and Full-Bridge Configurations for Wide Voltage Transfer Ratio Applications. IEEE Transactions on Power Electronics. 2021;36(9):10065-10080. doi:10.1109/tpel.2021.3067843
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[78]
2021 | Conference Paper | LibreCat-ID: 29895
Korthauer B, Rehlaender P, Schafmeister F, Böcker J. Design and Analysis of a Regenerative Snubber for a 2.2 kW Active-Clamp Forward Converter with Low-Voltage Output. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487130
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[77]
2021 | Conference Paper | LibreCat-ID: 29850
Strothmann B, Book G, Schafmeister F, Böcker J. Single-Phase Operation of Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger with Minimized DC-Link. In: PCIM Europe Digital Days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2021:1-8.
LibreCat | Download (ext.)
 
[76]
2021 | Conference Paper | LibreCat-ID: 29871
Urbaneck D, Rehlaender P, Böcker J, Schafmeister F. LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). ; 2021.
LibreCat | Download (ext.)
 
[75]
2021 | Conference Paper | LibreCat-ID: 30340
Hagemeyer M, Wallmeier P, Schafmeister F, Böcker J. Comparison of unidirectional Three- and Four-Wire based Boost PFC-Rectifier Topologies for Non-Isolated Three-Phase EV On-Board Chargers under Common-Mode Aspects. In: Proc. 36th IEEE Applied Power Electronics Conference (APEC). IEEE; 2021:569-576.
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[74]
2021 | Newspaper Article | LibreCat-ID: 30348
Schafmeister F. Transformerless On-Board Chargers at Three- and Single-Phase Operation: Compensation of LF Common-Mode Noise by the Internal DC/DC-Stage. Power System Design (PSD) Web Magazine. 2021.
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[73]
2021 | Conference Paper | LibreCat-ID: 29938
Unruh R, Lange J, Schafmeister F, Böcker J. Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault Conditions. In: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE; 2021. doi:https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542
LibreCat | DOI | Download (ext.)
 
[72]
2021 | Conference Paper | LibreCat-ID: 29899
Rehlaender P, Unruh R, Hankeln L, Schafmeister F, Böcker J. Frequency-Doubler Modulation for Reduced Junction Temperatures for LLC Resonant Converters Operated in Half-Bridge Configuration. In: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE; 2021. doi:10.23919/EPE21ECCEEurope50061.2021.9570674
LibreCat | DOI | Download (ext.)
 
[71]
2021 | Conference Paper | LibreCat-ID: 29893
Rehlaender P, Unruh R, Schafmeister F, Böcker J. Alternating Asymmetrical Phase-Shift Modulation for Full-Bridge Converters with Balanced Switching Losses to Reduce Thermal Imbalances. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487104
LibreCat | DOI | Download (ext.)
 
[70]
2020 | Conference Paper | LibreCat-ID: 29939
Unruh R, Schafmeister F, Böcker J. Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design. In: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE; 2020. doi:10.23919/epe20ecceeurope43536.2020.9215687
LibreCat | DOI | Download (ext.)
 
[69]
2020 | Conference Paper | LibreCat-ID: 29894
Rehlaender P, Tikhonov S, Schafmeister F, Böcker J. Dual Interleaved 3.6 kW LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode as a Single-Stage Architecture of an Automotive On-Board DC-DC Converter. In: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE; 2020. doi:10.23919/epe20ecceeurope43536.2020.9215736
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[68]
2020 | Conference Paper | LibreCat-ID: 29896
Rehlaender P, Grote T, Tikhonov S, Mario S, Schafmeister F, Böcker J. A 3,6 kW Single-Stage LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode for Automotive Onboard DC-DC Conversion. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[67]
2020 | Conference Paper | LibreCat-ID: 29898
Rüschenbaum T, Rehlaender P, Ha P, Grote T, Schafmeister F, Böcker J. Two-Stage Automotive DC-DC Converter Design with Wide Voltage-Transfer Range Utilizing Asymmetric LLC Operation. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[66]
2020 | Conference Paper | LibreCat-ID: 29874
Urbaneck D, Rehlaender P, Schafmeister F, Böcker J. LLC Converter Design in Capacitive Operation utilizes ZCS for IGBTs – a Concept Study for a 2.2 kW Automotive DC-DC Stage. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[65]
2020 | Conference Paper | LibreCat-ID: 30339
Ahmmad ME, Schafmeister F, Böcker J. Practical Implementation and Verification of Simple-to-Implement Digital Current Observer for Half-Bridge Topologies. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Digital Days). IEEE; 2020.
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[64]
2020 | Patent | LibreCat-ID: 30362
Schafmeister F. Apparatus and method for charging an electric battery vehicle. Published online 2020.
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[63]
2020 | Conference Paper | LibreCat-ID: 29880
Unruh R, Schafmeister F, Böcker J. 11kW, 70kHz LLC Converter Design with Adaptive Input Voltage for 98% Efficiency in an MMC. In: 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE; 2020. doi:10.1109/compel49091.2020.9265771
LibreCat | DOI | Download (ext.)
 
[62]
2020 | Conference Paper | LibreCat-ID: 29940
Unruh R, Schafmeister F, Fröhleke N, Böcker J. 1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications. In: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE; 2020.
LibreCat | Download (ext.)
 
[61]
2020 | Conference Paper | LibreCat-ID: 30001
Strothmann B, Piepenbrock T, Schafmeister F, Böcker J. Heat dissipation strategies for silicon carbide power SMDs and their use in different applications. In: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2020:1-7.
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[60]
2019 | Conference Paper | LibreCat-ID: 29999
Strothmann B, Schafmeister F, Böcker J. Common Mode Analysis of Non-Isolated Three-Phase EV-Charger for Bi-Directional Vehicle-to-Grid Operation. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2019:1-7.
LibreCat | Download (ext.)
 
[59]
2019 | Conference Paper | LibreCat-ID: 30002
Strothmann B, Schafmeister F, Böcker J. Pareto Design and Switching Frequencies for SiC MOSFETs Applied in an 11 kW Buck Converter for EV-Charging. In: 2019 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2019. doi:10.1109/apec.2019.8721850
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[58]
2019 | Conference Paper | LibreCat-ID: 16442
Rehlaender P, Grote T, Schafmeister F, Böcker J. Analytical Modeling and Design of an Active Clamp Forward Converter Applied as a Single-Stage On-Board DC-DC Converter for EVs. In: PCIM Europe 2019. ; 2019.
LibreCat | Download (ext.)
 
[57]
2019 | Conference Paper | LibreCat-ID: 29942
Unruh R, Schafmeister F, Fröhleke N, Böcker J. MMC-Topology for High-Current and Low-Voltage Applications with Minimal Number of Submodules, Reduced Switching and Capacitor Losses. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE; 2019.
LibreCat | Download (ext.)
 
[56]
2019 | Conference Paper | LibreCat-ID: 30334
Keuck L, Schafmeister F, Böcker J. Computer-Aided Design and Optimization of an Integrated Transformer with Distributed Air Gap and Leakage Path for an LLC Resonant Converter. In: Proc. 34th IEEE Applied Power Electronics Conference (APEC). IEEE; 2019:1415-1422.
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[55]
2019 | Conference Paper | LibreCat-ID: 30335
Keuck L, Schafmeister F, Böcker J, Jungwirth H, Schmidhuber M. Computer-Aided Design and Optimization of an Integrated Transformer with Distributed Air Gap and Leakage Path for LLC Resonant Converter. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[54]
2019 | Conference Paper | LibreCat-ID: 30337
Ahmad ME, Schafmeister F, Böcker J. Novel Current Measurement Concept for Half Bridge Topologies based on simple-to-implement Digital Current Observer. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[53]
2019 | Conference Paper | LibreCat-ID: 30336
Bolte S, Schafmeister F, Böcker J. LCC Resonant Converter for Piezoelectric Transducers with Phase Shift Control. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[52]
2019 | Conference Paper | LibreCat-ID: 30338
Bolte S, Schafmeister F, Böcker J. Bidirectional Resonant Converter with Integrated Magnetics for On-Board Chargers. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2019:770-774.
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[51]
2019 | Conference Paper | LibreCat-ID: 30344
Rehlaender P, Grote T, Schafmeister F, Böcker J. Interleaved Active Clamp Forward Converters as Single Stage On-Board DC-DC Converters for EVs – an Accurate Model and Design Considerations. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[50]
2019 | Conference Paper | LibreCat-ID: 30346
Rehlaender P, Grote T, Tikhonov S, et al. A PCB-Integrated Winding Using a Litz Structure for a Wireless Charging Coil. In: Proc. 21st European Conference on Power Electronics and Applications (EPE-ECCE Europe). EPE; 2019:1-9.
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[49]
2019 | Conference Paper | LibreCat-ID: 30345
Rehlaender P, Grote T, Schafmeister F, Böcker J. Analytical Topology Comparison for a Single-Stage On-Board EV-Battery Converter. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2019:2477-2482.
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[48]
2019 | Patent | LibreCat-ID: 30361
Pohlmann R, Schafmeister F. Current measurement circuit for TCM-PFC. Published online 2019.
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[47]
2018 | Conference Paper | LibreCat-ID: 30331
Keuck L, Munir A, Schafmeister F, Böcker J. Adaptive Frequency Control of DC-DC-Converters for Maximum Efficiency Using Artificial Neural Network. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2018.
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[46]
2018 | Conference Paper | LibreCat-ID: 30332
Keuck L, Jabbar N, Schafmeister F, Böcker J. Switching Loss Characterization of Wide Band-Gap Devices by an Indirect Identification Methodology. In: Proc. 20th European Conference on Power Electronics and Applications (EPE-ECCE Europe). EPE; 2018:1-10.
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[45]
2018 | Conference Paper | LibreCat-ID: 30333
Hagemeyer M, Schafmeister F, Böcker J. Coupled Inductor Design for Interleaved High-Current DC-DC Converters. In: Proc. International Conference on Electrical Machines and Systems (ICEMS). Korea IEE & IEE Japan; 2018:2316-2321.
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[44]
2017 | Patent | LibreCat-ID: 30358
Figge H, Schafmeister F, Grote T. LLC Balancing. Published online 2017.
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[43]
2017 | Patent | LibreCat-ID: 30363
Wallmeier P, Schafmeister F. Controller for an Inverter (PV Inverter: PV Self Consumption & symm. Output Control). Published online 2017.
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[42]
2015 | Conference Paper | LibreCat-ID: 30330
Schafmeister F, Grote T, Figge H. Today’s Relevance of Digital Control in Server- and Telecom Power Supplies. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2015.
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[41]
2015 | Patent | LibreCat-ID: 30359
Ide P, Schafmeister F, Richter J, Pour B, Spesser D, Herke D. Adaptable AC Input Phase Switching. Published online 2015.
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[40]
2015 | Patent | LibreCat-ID: 30360
Hufnagel M, Schafmeister F. Resistorless Precharging. Published online 2015.
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[39]
2014 | Conference Paper | LibreCat-ID: 30327
Schafmeister F, Ide P, Richter J. Adaptable AC Input Phase Switching for Optimum Utilization of Various Grid Configurations supplying Power Electronic Converters and EV/HEV On Board Chargers. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[38]
2014 | Conference Paper | LibreCat-ID: 30329
Li R, Njiende H, Schafmeister F, Ide P. A Soft-Switching Interleaved DC-DC Converter with Integrated Magnetics for High Voltage Battery Charger. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[37]
2014 | Conference Paper | LibreCat-ID: 30328
Schafmeister F, Hufnagel M, Ide P. Resistorless Precharging of Boost PFCs by Phase Angle Control of Thyristors. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[36]
2013 | Conference Paper | LibreCat-ID: 30326
Figge H, Grote T, Fröhleke N, Böcker J, Schafmeister F. Two-Phase Interleaving Configuration of the LLC Resonant Converter - Analysis and Experimental Evaluation. In: Proc. IEEE Annual Industrial Electronics Society Conference (IECON). IEEE; 2013:1392-1397.
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[35]
2013 | Patent | LibreCat-ID: 30357
Njiende H, Li R, Schafmeister F, Ide P. Integrated Magnetic for DCM-PSFB Converter. Published online 2013.
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[34]
2013 | Patent | LibreCat-ID: 30356
Figge H, Schafmeister F. Resonant capacitor clamping circuit in resonant converter. Published online 2013.
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[33]
2012 | Conference Paper | LibreCat-ID: 30325
Figge H, Fröhleke N, Böcker J, Schafmeister F. Cost-Effective Implementation of a Digitally Controlled LLC Resonant Converter for Application in Server- and Telecom-PSUs. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2012:1-8.
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[32]
2012 | Journal Article | LibreCat-ID: 30324
Schafmeister F, Kolar J. Novel Hybrid Modulation Schemes Significantly Extending the Reactive Power Control Range of All Matrix Converter Topologies With Low Computational Effort. IEEE Transactions on Power Electronics. 2012;59(1):194-210.
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[31]
2012 | Book Chapter | LibreCat-ID: 30343
Kolar J, Schafmeister F. Matrixkonverter, Kapitel 3.8. In: Schröder D, ed. Lehrbuch Leistungselektronische Schaltungen . 3rd ed. Springer Vieweg Verlag; 2012:195-296.
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[30]
2012 | Patent | LibreCat-ID: 30355
Schafmeister F, Grote T. Digital Slope Compensation for Current Mode Control. Published online 2012.
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[29]
2011 | Conference Paper | LibreCat-ID: 30323
Grote T, Figge H, Fröhleke N, Böcker J, Schafmeister F. Digital Control Strategy for Multi-Phase Interleaved Boundary Mode and DCM Boost PFC Converters. In: Proc. IEEE Energy Conversion Congress and Exposition (ECCE). IEEE; 2011:3186-3192.
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[28]
2011 | Conference Paper | LibreCat-ID: 30322
Figge H, Grote T, Fröhleke N, Böcker J, Schafmeister F. Overcurrent Protection for the LLC Resonant Converter with Improved Hold-Up Time. In: Proc. 26th IEEE Applied Power Electronics Conference (APEC). IEEE; 2011:13-20.
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[27]
2011 | Patent | LibreCat-ID: 30354
Schafmeister F, Kolar J. Unidirektionaler AC-AC-Matrixkonverter mit Dreipunkt Ein- und Ausgangsstufe. Published online 2011.
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[26]
2011 | Patent | LibreCat-ID: 30353
Schafmeister F, Kolar J. Verfahren zum spannungslosen Schalten der Pulswechselrichter-Ausgangsstufe eines indirekten Dreiphasen-AC-AC Matrixkonverters. Published online 2011.
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[25]
2010 | Conference Paper | LibreCat-ID: 30321
Schafmeister F, Wang X, Grote T, Ide P. Scalable Multi Phase Interleaved Boundary Mode PFC Concept enabling Energy- and Cost Efficient PSUs in the kW-Range. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2010:3831-3835.
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[24]
2009 | Conference Paper | LibreCat-ID: 30319
Grote T, Figge Fh, Fröhleke N, et al. Semi-Digital Interleaved PFC Control with Optimized Light Load Efficiency. In: Proc. 24th IEEE Applied Power Electronics Conference (APEC). IEEE; 2009:1722-1727.
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[23]
2009 | Conference Paper | LibreCat-ID: 30320
Grote T, Schafmeister F, Figge H, Fröhleke N, Ide P, Böcker J. Adaptive Digital Slope Compensation for Peak Current Mode Control. In: Proc. IEEE Energy Conversion Congress and Exposition (ECCE). IEEE; 2009:3523-3529.
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[22]
2009 | Patent | LibreCat-ID: 30351
Schafmeister F, Kolar J. Verfahren zur Nutzung des ausgangsseitigen Blindstromes eines indirekten dreiphasen-Matrixkonverters zur Erzeugung von Eingangsblindstrom. Published online 2009.
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[21]
2009 | Conference Paper | LibreCat-ID: 30517
Grote T, Schafmeister F, Figge H, Fröhleke N, Ide P, Böcker J. Adaptive digital slope compensation for peak current mode control. In: 2009 IEEE Energy Conversion Congress and Exposition. IEEE; 2009. doi:10.1109/ecce.2009.5316380
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[20]
2008 | Conference Paper | LibreCat-ID: 30318
Figge H, Fröhleke N, Schafmeister F, Ide P. Paralleling of LLC Resonant Converters using Frequency Controlled Current Balancing. In: Proc. DPEC Seminar. Delta Electronics; 2008.
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[19]
2008 | Conference Paper | LibreCat-ID: 30317
Grote T, Fröhleke N, Schafmeister F, Ide P. Semi-Digital Interleaved PFC Control. In: Proc. DPEC Seminar. Delta Electronics; 2008.
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[18]
2008 | Book Chapter | LibreCat-ID: 30316
Kolar J, Schafmeister F. Matrixkonverter, Kapitel 3.8. In: Schröder D, ed. Lehrbuch Leistungselektronische Schaltungen,. 2nd ed. Springer-Verlag; 2008:188-289.
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[17]
2007 | Patent | LibreCat-ID: 30352
Kolar J, Schafmeister F. Verfahren zur Minimierung der Schaltverluste eines quasi-direkten Dreiphasen-AC/AC-Pulsumrichters bei geringer Amplitude der Ausgangsspannungsgrundschwingung. Published online 2007.
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[16]
2007 | Journal Article | LibreCat-ID: 30314
Kolar J, Schafmeister F, Round S, Ertl H. Novel Three-Phase AC–AC Sparse Matrix Converters. IEEE Transactions on Power Electronics. 2007;22(5):1649-1661.
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[15]
2007 | Dissertation | LibreCat-ID: 30315
Schafmeister F. Indirekte Sparse Matrix Konverter. ETH Zürich; 2007.
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[14]
2006 | Journal Article | LibreCat-ID: 30313
Round S, Schafmeister F, Kolar J. Comparison of Performance and Realization Effort of a Very Sparse Matrix Converter to a Voltage DC Link PWM Inverter with Active Front End. IEEJ Transactions of the Institute of Electrical Engineers of Japan. 2006;126-D(5):578-588.
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[13]
2005 | Conference Paper | LibreCat-ID: 30312
Round S, Schafmeister F, Pereira E, Serpa L, Kolar J. Comparison of Performance and Realization Effort of a Very Sparse Matrix Converter to a Voltage DC Link PWM Inverter with Active Front End. In: Proc. 5th IEEJ International Power Electronics Conference (IPEC). IEEJapan; 2005.
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[12]
2005 | Conference Paper | LibreCat-ID: 30301
Schafmeister F, Rytz C, Kolar J. Analytical Calculation of the Conduction and Switching Losses of the Conventional Matrix Converter and the (Very) Sparse Matrix Converter. In: Proc. 20th IEEE Applied Power Electronics Conference (APEC). Vol 2. IEEE; 2005:875-881.
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[11]
2005 | Journal Article | LibreCat-ID: 30311
Ide P, Schafmeister F, Fröhleke N, Grotstollen H. Enhanced Control Scheme for Three-Phase, Three-Level Rectifiers at Partial Load. IEEE Transactions on Industrial Electronics. 2005;52(3):719-726.
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[10]
2004 | Conference Paper | LibreCat-ID: 30309
Schafmeister F, Kolar J. Novel Modulation Schemes for Conventional and Sparse Matrix Converters Facilitating Reactive Power Transfer Independent of Active Power Flow. In: Proc. 35th IEEE Power Electronics Specialists Conference (PESC). Vol 4. IEEE; 2004:2917-2923.
LibreCat
 
[9]
2004 | Conference Paper | LibreCat-ID: 30308
Ide P, Schafmeister F, Fröhleke N, Grotstollen H. Enhanced Control Scheme for Three-Phase / Three-Level Rectifiers at Partial Load. In: Proc. 35th IEEE Power Electronics Specialists Conference (PESC). Vol 1. IEEE; 2004:207-213.
LibreCat
 
[8]
2004 | Conference Paper | LibreCat-ID: 30310
Schafmeister F, Kolar J. Novel Hybrid Modulation Schemes Extending the Reactive Power Control Range of Conventional and Sparse Matrix Converters Operating at Maximum Output Voltage. In: Proc. 11th International Power Electronics and Motion Control Conference (EPE-PEMC). EPE; 2004.
LibreCat
 
[7]
2003 | Conference Paper | LibreCat-ID: 30307
Schafmeister F, Kolar J. Novel Modulation Schemes Minimizing the Switching Losses of Sparse Matrix Converters. In: Proc. IEEE Annual Industrial Electronics Society Conference (IECON). IEEE; 2003:2085-2090.
LibreCat
 
[6]
2003 | Conference Paper | LibreCat-ID: 30300
Schafmeister F, Herold S, Kolar J. Evaluation of 1200V-Si-IGBTs and 1300V-SiC-JFETs for Application in Three-Phase Very Sparse Matrix AC-AC Converter Systems. In: Proc. 18th IEEE Applied Power Electronics Conf. (APEC). Vol 1. IEEE; 2003:241-255.
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[5]
2003 | Journal Article | LibreCat-ID: 30306
Schafmeister F, Baumann M, Kolar J. Analytically Closed Calculation of the Conduction Losses of Three-Phase AC-AC Sparse Matrix Converters. EPE Journal. 2003;13(1):5-14.
LibreCat
 
[4]
2002 | Conference Paper | LibreCat-ID: 30302
Schafmeister F, Baumann M, Kolar J. Analytically Closed Calculation of the Conduction and Switching Losses of Three-Phase AC-AC Sparse Matrix Converters. In: Proc. 10th International Power Electronics and Motion Control Conference (EPE-PEMC). EPE; 2002.
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[3]
2002 | Conference Paper | LibreCat-ID: 30299
Kolar J, Baumann M, Schafmeister F, Ertl H. Novel Three-Phase AC-DC-AC Sparse Matrix Converter. In: Proc. 17th IEEE Applied Power Electronics Conf. (APEC). Vol 2. IEEE; 2002:777-791.
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[2]
2002 | Conference Paper | LibreCat-ID: 30305
Schafmeister F, Kolar J. Analyse der Regelung einer permanenterregten Synchronmaschine bei Speisung durch einen dreiphasigen Sparse-Matrix-Konverter. In: Proc. Ansoft Inspiring Design Workshop. ; 2002.
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[1]
2001 | Conference Paper | LibreCat-ID: 30124
Ide P, Schafmeister F, Fröhleke N. Active Common-Mode Voltage Cancellation for Three-Phase PWM Rectifier/Inverter Systems based on a New Topology. In: Proc. 16th IEEE Applied Power Electronics Conf. (APEC). Vol 1. IEEE; 2001:201-207.
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[92]
2023 | Conference Paper | LibreCat-ID: 48352
Unruh R, Böcker J, Schafmeister F. An Optimized Third-Harmonic Injection Reduces DC-Link Voltage Ripple in Cascaded H-Bridge Converters up to 50% for all Power Factors. In: 2023 25th European Conference on Power Electronics and Applications (EPE’23 ECCE Europe). IEEE; 2023. doi:10.23919/epe23ecceeurope58414.2023.10264313
LibreCat | DOI | Download (ext.)
 
[91]
2022 | Conference Abstract | LibreCat-ID: 30347
Schafmeister F. Compensation of LF Common-Mode Noise by the internal DC/DC-Stage for transformerless On-Board Chargers at Three- and Single-Phase Operation. In: International Conference on Electric & Electronic in Hybrid and Electric Vehicles and Electric Energy Management (EEHE),.
LibreCat
 
[90]
2022 | Conference Paper | LibreCat-ID: 30349
Förster N, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source Transistor Database and Toolbox as an Unified Software Engineering Tool for Managing and Evaluating Power Transistors. In: Proc. 37th IEEE Applied Power Electronics Conference (APEC). IEEE.
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[89]
2022 | Conference Paper | LibreCat-ID: 30350
Keuck L, Schafmeister F, Böcker J. Robust Hysteresis Control for LLC Resonant Converters Using a Fully Isolated Measurement Scheme. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE.
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[88]
2022 | Conference Paper | LibreCat-ID: 30844
Huber J, Wallmeier P, Pieper R, Schafmeister F, Kolar J. Comparative Evaluation of MVAC-LVDC SST and Hybrid Transformer Concepts for Future Datacenters. In: Proc. 9th IEEJ International Power Electronics Conference (IPEC). IEE Japan.
LibreCat
 
[87]
2022 | Conference Paper | LibreCat-ID: 35125
Förster N, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source Transistor Database and Toolbox as a Unified Software Engineering Tool for Managing and Evaluating Power Transistors. In: 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2022. doi:10.1109/apec43599.2022.9773701
LibreCat | DOI
 
[86]
2022 | Conference Paper | LibreCat-ID: 35127
Förster N, Piepenbrock T, Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. An Open-Source FEM Magnetics Toolbox for Power Electronic Magnetic Components. In: PCIM Europe 2022; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2022:1-10. doi:10.30420/565822103
LibreCat | DOI
 
[85]
2022 | Journal Article | LibreCat-ID: 44163
Rehlaender P, Wallscheid O, Schafmeister F, Böcker J. LLC Resonant Converter Modulations for Reduced Junction Temperatures in Half-Bridge Mode and Transformer Flux in the On-the-Fly Morphing Thereto. IEEE Transactions on Power Electronics. 2022;37(11):13413-13427. doi:10.1109/tpel.2022.3180758
LibreCat | DOI
 
[84]
2022 | Conference Paper | LibreCat-ID: 44164
Rehlaender P, Korthauer B, Schafmeister F, Böcker J. Experimental Demonstration of a 2.2kW Active-Clamp Converter for High-Current Wide-Voltage-Transfer Ratio Applications. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:P.1-P.11.
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[83]
2022 | Conference Paper | LibreCat-ID: 44161
Rehlaender P, Schafmeister F, Böcker J. Phase-Shift Modulation for Flying-Capacitor DC-DC Converters. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:1-9.
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[82]
2022 | Conference Paper | LibreCat-ID: 34176
Unruh R, Schafmeister F, Böcker J. Zero-Sequence Voltage Reduces DC-Link Capacitor Demand in Cascaded H-Bridge Converters for Large-Scale Electrolyzers by 40%. In: 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). IEEE; 2022.
LibreCat | Download (ext.)
 
[81]
2022 | Conference Paper | LibreCat-ID: 35126
Förster N, Hölscher J, Piepenbrock T, et al. An Open-Source FEM Magnetic Toolbox for Calculating Electric and Thermal Behavior of Power Electronic Magnetic Components. In: 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). ; 2022:P.1-P.9.
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[80]
2021 | Conference Paper | LibreCat-ID: 29849
Strothmann B, Schafmeister F, Böcker J. Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487462
LibreCat | DOI
 
[79]
2021 | Journal Article | LibreCat-ID: 29892
Rehlaender P, Schafmeister F, Böcker J. Interleaved Single-Stage LLC Converter Design Utilizing Half- and Full-Bridge Configurations for Wide Voltage Transfer Ratio Applications. IEEE Transactions on Power Electronics. 2021;36(9):10065-10080. doi:10.1109/tpel.2021.3067843
LibreCat | DOI
 
[78]
2021 | Conference Paper | LibreCat-ID: 29895
Korthauer B, Rehlaender P, Schafmeister F, Böcker J. Design and Analysis of a Regenerative Snubber for a 2.2 kW Active-Clamp Forward Converter with Low-Voltage Output. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487130
LibreCat | DOI
 
[77]
2021 | Conference Paper | LibreCat-ID: 29850
Strothmann B, Book G, Schafmeister F, Böcker J. Single-Phase Operation of Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger with Minimized DC-Link. In: PCIM Europe Digital Days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2021:1-8.
LibreCat | Download (ext.)
 
[76]
2021 | Conference Paper | LibreCat-ID: 29871
Urbaneck D, Rehlaender P, Böcker J, Schafmeister F. LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). ; 2021.
LibreCat | Download (ext.)
 
[75]
2021 | Conference Paper | LibreCat-ID: 30340
Hagemeyer M, Wallmeier P, Schafmeister F, Böcker J. Comparison of unidirectional Three- and Four-Wire based Boost PFC-Rectifier Topologies for Non-Isolated Three-Phase EV On-Board Chargers under Common-Mode Aspects. In: Proc. 36th IEEE Applied Power Electronics Conference (APEC). IEEE; 2021:569-576.
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[74]
2021 | Newspaper Article | LibreCat-ID: 30348
Schafmeister F. Transformerless On-Board Chargers at Three- and Single-Phase Operation: Compensation of LF Common-Mode Noise by the Internal DC/DC-Stage. Power System Design (PSD) Web Magazine. 2021.
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[73]
2021 | Conference Paper | LibreCat-ID: 29938
Unruh R, Lange J, Schafmeister F, Böcker J. Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault Conditions. In: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE; 2021. doi:https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542
LibreCat | DOI | Download (ext.)
 
[72]
2021 | Conference Paper | LibreCat-ID: 29899
Rehlaender P, Unruh R, Hankeln L, Schafmeister F, Böcker J. Frequency-Doubler Modulation for Reduced Junction Temperatures for LLC Resonant Converters Operated in Half-Bridge Configuration. In: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE; 2021. doi:10.23919/EPE21ECCEEurope50061.2021.9570674
LibreCat | DOI | Download (ext.)
 
[71]
2021 | Conference Paper | LibreCat-ID: 29893
Rehlaender P, Unruh R, Schafmeister F, Böcker J. Alternating Asymmetrical Phase-Shift Modulation for Full-Bridge Converters with Balanced Switching Losses to Reduce Thermal Imbalances. In: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2021. doi:10.1109/apec42165.2021.9487104
LibreCat | DOI | Download (ext.)
 
[70]
2020 | Conference Paper | LibreCat-ID: 29939
Unruh R, Schafmeister F, Böcker J. Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design. In: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE; 2020. doi:10.23919/epe20ecceeurope43536.2020.9215687
LibreCat | DOI | Download (ext.)
 
[69]
2020 | Conference Paper | LibreCat-ID: 29894
Rehlaender P, Tikhonov S, Schafmeister F, Böcker J. Dual Interleaved 3.6 kW LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode as a Single-Stage Architecture of an Automotive On-Board DC-DC Converter. In: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE; 2020. doi:10.23919/epe20ecceeurope43536.2020.9215736
LibreCat | DOI
 
[68]
2020 | Conference Paper | LibreCat-ID: 29896
Rehlaender P, Grote T, Tikhonov S, Mario S, Schafmeister F, Böcker J. A 3,6 kW Single-Stage LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode for Automotive Onboard DC-DC Conversion. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[67]
2020 | Conference Paper | LibreCat-ID: 29898
Rüschenbaum T, Rehlaender P, Ha P, Grote T, Schafmeister F, Böcker J. Two-Stage Automotive DC-DC Converter Design with Wide Voltage-Transfer Range Utilizing Asymmetric LLC Operation. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[66]
2020 | Conference Paper | LibreCat-ID: 29874
Urbaneck D, Rehlaender P, Schafmeister F, Böcker J. LLC Converter Design in Capacitive Operation utilizes ZCS for IGBTs – a Concept Study for a 2.2 kW Automotive DC-DC Stage. In: PCIM Europe Digital Days 2020. ; 2020.
LibreCat | Download (ext.)
 
[65]
2020 | Conference Paper | LibreCat-ID: 30339
Ahmmad ME, Schafmeister F, Böcker J. Practical Implementation and Verification of Simple-to-Implement Digital Current Observer for Half-Bridge Topologies. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Digital Days). IEEE; 2020.
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[64]
2020 | Patent | LibreCat-ID: 30362
Schafmeister F. Apparatus and method for charging an electric battery vehicle. Published online 2020.
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[63]
2020 | Conference Paper | LibreCat-ID: 29880
Unruh R, Schafmeister F, Böcker J. 11kW, 70kHz LLC Converter Design with Adaptive Input Voltage for 98% Efficiency in an MMC. In: 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE; 2020. doi:10.1109/compel49091.2020.9265771
LibreCat | DOI | Download (ext.)
 
[62]
2020 | Conference Paper | LibreCat-ID: 29940
Unruh R, Schafmeister F, Fröhleke N, Böcker J. 1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications. In: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE; 2020.
LibreCat | Download (ext.)
 
[61]
2020 | Conference Paper | LibreCat-ID: 30001
Strothmann B, Piepenbrock T, Schafmeister F, Böcker J. Heat dissipation strategies for silicon carbide power SMDs and their use in different applications. In: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2020:1-7.
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[60]
2019 | Conference Paper | LibreCat-ID: 29999
Strothmann B, Schafmeister F, Böcker J. Common Mode Analysis of Non-Isolated Three-Phase EV-Charger for Bi-Directional Vehicle-to-Grid Operation. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. ; 2019:1-7.
LibreCat | Download (ext.)
 
[59]
2019 | Conference Paper | LibreCat-ID: 30002
Strothmann B, Schafmeister F, Böcker J. Pareto Design and Switching Frequencies for SiC MOSFETs Applied in an 11 kW Buck Converter for EV-Charging. In: 2019 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE; 2019. doi:10.1109/apec.2019.8721850
LibreCat | DOI
 
[58]
2019 | Conference Paper | LibreCat-ID: 16442
Rehlaender P, Grote T, Schafmeister F, Böcker J. Analytical Modeling and Design of an Active Clamp Forward Converter Applied as a Single-Stage On-Board DC-DC Converter for EVs. In: PCIM Europe 2019. ; 2019.
LibreCat | Download (ext.)
 
[57]
2019 | Conference Paper | LibreCat-ID: 29942
Unruh R, Schafmeister F, Fröhleke N, Böcker J. MMC-Topology for High-Current and Low-Voltage Applications with Minimal Number of Submodules, Reduced Switching and Capacitor Losses. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE; 2019.
LibreCat | Download (ext.)
 
[56]
2019 | Conference Paper | LibreCat-ID: 30334
Keuck L, Schafmeister F, Böcker J. Computer-Aided Design and Optimization of an Integrated Transformer with Distributed Air Gap and Leakage Path for an LLC Resonant Converter. In: Proc. 34th IEEE Applied Power Electronics Conference (APEC). IEEE; 2019:1415-1422.
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[55]
2019 | Conference Paper | LibreCat-ID: 30335
Keuck L, Schafmeister F, Böcker J, Jungwirth H, Schmidhuber M. Computer-Aided Design and Optimization of an Integrated Transformer with Distributed Air Gap and Leakage Path for LLC Resonant Converter. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[54]
2019 | Conference Paper | LibreCat-ID: 30337
Ahmad ME, Schafmeister F, Böcker J. Novel Current Measurement Concept for Half Bridge Topologies based on simple-to-implement Digital Current Observer. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[53]
2019 | Conference Paper | LibreCat-ID: 30336
Bolte S, Schafmeister F, Böcker J. LCC Resonant Converter for Piezoelectric Transducers with Phase Shift Control. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[52]
2019 | Conference Paper | LibreCat-ID: 30338
Bolte S, Schafmeister F, Böcker J. Bidirectional Resonant Converter with Integrated Magnetics for On-Board Chargers. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2019:770-774.
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[51]
2019 | Conference Paper | LibreCat-ID: 30344
Rehlaender P, Grote T, Schafmeister F, Böcker J. Interleaved Active Clamp Forward Converters as Single Stage On-Board DC-DC Converters for EVs – an Accurate Model and Design Considerations. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2019.
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[50]
2019 | Conference Paper | LibreCat-ID: 30346
Rehlaender P, Grote T, Tikhonov S, et al. A PCB-Integrated Winding Using a Litz Structure for a Wireless Charging Coil. In: Proc. 21st European Conference on Power Electronics and Applications (EPE-ECCE Europe). EPE; 2019:1-9.
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[49]
2019 | Conference Paper | LibreCat-ID: 30345
Rehlaender P, Grote T, Schafmeister F, Böcker J. Analytical Topology Comparison for a Single-Stage On-Board EV-Battery Converter. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2019:2477-2482.
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[48]
2019 | Patent | LibreCat-ID: 30361
Pohlmann R, Schafmeister F. Current measurement circuit for TCM-PFC. Published online 2019.
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[47]
2018 | Conference Paper | LibreCat-ID: 30331
Keuck L, Munir A, Schafmeister F, Böcker J. Adaptive Frequency Control of DC-DC-Converters for Maximum Efficiency Using Artificial Neural Network. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2018.
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[46]
2018 | Conference Paper | LibreCat-ID: 30332
Keuck L, Jabbar N, Schafmeister F, Böcker J. Switching Loss Characterization of Wide Band-Gap Devices by an Indirect Identification Methodology. In: Proc. 20th European Conference on Power Electronics and Applications (EPE-ECCE Europe). EPE; 2018:1-10.
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[45]
2018 | Conference Paper | LibreCat-ID: 30333
Hagemeyer M, Schafmeister F, Böcker J. Coupled Inductor Design for Interleaved High-Current DC-DC Converters. In: Proc. International Conference on Electrical Machines and Systems (ICEMS). Korea IEE & IEE Japan; 2018:2316-2321.
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[44]
2017 | Patent | LibreCat-ID: 30358
Figge H, Schafmeister F, Grote T. LLC Balancing. Published online 2017.
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[43]
2017 | Patent | LibreCat-ID: 30363
Wallmeier P, Schafmeister F. Controller for an Inverter (PV Inverter: PV Self Consumption & symm. Output Control). Published online 2017.
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[42]
2015 | Conference Paper | LibreCat-ID: 30330
Schafmeister F, Grote T, Figge H. Today’s Relevance of Digital Control in Server- and Telecom Power Supplies. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2015.
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[41]
2015 | Patent | LibreCat-ID: 30359
Ide P, Schafmeister F, Richter J, Pour B, Spesser D, Herke D. Adaptable AC Input Phase Switching. Published online 2015.
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[40]
2015 | Patent | LibreCat-ID: 30360
Hufnagel M, Schafmeister F. Resistorless Precharging. Published online 2015.
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[39]
2014 | Conference Paper | LibreCat-ID: 30327
Schafmeister F, Ide P, Richter J. Adaptable AC Input Phase Switching for Optimum Utilization of Various Grid Configurations supplying Power Electronic Converters and EV/HEV On Board Chargers. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[38]
2014 | Conference Paper | LibreCat-ID: 30329
Li R, Njiende H, Schafmeister F, Ide P. A Soft-Switching Interleaved DC-DC Converter with Integrated Magnetics for High Voltage Battery Charger. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[37]
2014 | Conference Paper | LibreCat-ID: 30328
Schafmeister F, Hufnagel M, Ide P. Resistorless Precharging of Boost PFCs by Phase Angle Control of Thyristors. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2014.
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[36]
2013 | Conference Paper | LibreCat-ID: 30326
Figge H, Grote T, Fröhleke N, Böcker J, Schafmeister F. Two-Phase Interleaving Configuration of the LLC Resonant Converter - Analysis and Experimental Evaluation. In: Proc. IEEE Annual Industrial Electronics Society Conference (IECON). IEEE; 2013:1392-1397.
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[35]
2013 | Patent | LibreCat-ID: 30357
Njiende H, Li R, Schafmeister F, Ide P. Integrated Magnetic for DCM-PSFB Converter. Published online 2013.
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[34]
2013 | Patent | LibreCat-ID: 30356
Figge H, Schafmeister F. Resonant capacitor clamping circuit in resonant converter. Published online 2013.
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[33]
2012 | Conference Paper | LibreCat-ID: 30325
Figge H, Fröhleke N, Böcker J, Schafmeister F. Cost-Effective Implementation of a Digitally Controlled LLC Resonant Converter for Application in Server- and Telecom-PSUs. In: Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM). IEEE; 2012:1-8.
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[32]
2012 | Journal Article | LibreCat-ID: 30324
Schafmeister F, Kolar J. Novel Hybrid Modulation Schemes Significantly Extending the Reactive Power Control Range of All Matrix Converter Topologies With Low Computational Effort. IEEE Transactions on Power Electronics. 2012;59(1):194-210.
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[31]
2012 | Book Chapter | LibreCat-ID: 30343
Kolar J, Schafmeister F. Matrixkonverter, Kapitel 3.8. In: Schröder D, ed. Lehrbuch Leistungselektronische Schaltungen . 3rd ed. Springer Vieweg Verlag; 2012:195-296.
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[30]
2012 | Patent | LibreCat-ID: 30355
Schafmeister F, Grote T. Digital Slope Compensation for Current Mode Control. Published online 2012.
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[29]
2011 | Conference Paper | LibreCat-ID: 30323
Grote T, Figge H, Fröhleke N, Böcker J, Schafmeister F. Digital Control Strategy for Multi-Phase Interleaved Boundary Mode and DCM Boost PFC Converters. In: Proc. IEEE Energy Conversion Congress and Exposition (ECCE). IEEE; 2011:3186-3192.
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[28]
2011 | Conference Paper | LibreCat-ID: 30322
Figge H, Grote T, Fröhleke N, Böcker J, Schafmeister F. Overcurrent Protection for the LLC Resonant Converter with Improved Hold-Up Time. In: Proc. 26th IEEE Applied Power Electronics Conference (APEC). IEEE; 2011:13-20.
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[27]
2011 | Patent | LibreCat-ID: 30354
Schafmeister F, Kolar J. Unidirektionaler AC-AC-Matrixkonverter mit Dreipunkt Ein- und Ausgangsstufe. Published online 2011.
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[26]
2011 | Patent | LibreCat-ID: 30353
Schafmeister F, Kolar J. Verfahren zum spannungslosen Schalten der Pulswechselrichter-Ausgangsstufe eines indirekten Dreiphasen-AC-AC Matrixkonverters. Published online 2011.
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[25]
2010 | Conference Paper | LibreCat-ID: 30321
Schafmeister F, Wang X, Grote T, Ide P. Scalable Multi Phase Interleaved Boundary Mode PFC Concept enabling Energy- and Cost Efficient PSUs in the kW-Range. In: Proc. IEEE International Symposium on Industrial Electronics (ISIE). IEEE; 2010:3831-3835.
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[24]
2009 | Conference Paper | LibreCat-ID: 30319
Grote T, Figge Fh, Fröhleke N, et al. Semi-Digital Interleaved PFC Control with Optimized Light Load Efficiency. In: Proc. 24th IEEE Applied Power Electronics Conference (APEC). IEEE; 2009:1722-1727.
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[23]
2009 | Conference Paper | LibreCat-ID: 30320
Grote T, Schafmeister F, Figge H, Fröhleke N, Ide P, Böcker J. Adaptive Digital Slope Compensation for Peak Current Mode Control. In: Proc. IEEE Energy Conversion Congress and Exposition (ECCE). IEEE; 2009:3523-3529.
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[22]
2009 | Patent | LibreCat-ID: 30351
Schafmeister F, Kolar J. Verfahren zur Nutzung des ausgangsseitigen Blindstromes eines indirekten dreiphasen-Matrixkonverters zur Erzeugung von Eingangsblindstrom. Published online 2009.
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[21]
2009 | Conference Paper | LibreCat-ID: 30517
Grote T, Schafmeister F, Figge H, Fröhleke N, Ide P, Böcker J. Adaptive digital slope compensation for peak current mode control. In: 2009 IEEE Energy Conversion Congress and Exposition. IEEE; 2009. doi:10.1109/ecce.2009.5316380
LibreCat | DOI
 
[20]
2008 | Conference Paper | LibreCat-ID: 30318
Figge H, Fröhleke N, Schafmeister F, Ide P. Paralleling of LLC Resonant Converters using Frequency Controlled Current Balancing. In: Proc. DPEC Seminar. Delta Electronics; 2008.
LibreCat
 
[19]
2008 | Conference Paper | LibreCat-ID: 30317
Grote T, Fröhleke N, Schafmeister F, Ide P. Semi-Digital Interleaved PFC Control. In: Proc. DPEC Seminar. Delta Electronics; 2008.
LibreCat
 
[18]
2008 | Book Chapter | LibreCat-ID: 30316
Kolar J, Schafmeister F. Matrixkonverter, Kapitel 3.8. In: Schröder D, ed. Lehrbuch Leistungselektronische Schaltungen,. 2nd ed. Springer-Verlag; 2008:188-289.
LibreCat
 
[17]
2007 | Patent | LibreCat-ID: 30352
Kolar J, Schafmeister F. Verfahren zur Minimierung der Schaltverluste eines quasi-direkten Dreiphasen-AC/AC-Pulsumrichters bei geringer Amplitude der Ausgangsspannungsgrundschwingung. Published online 2007.
LibreCat
 
[16]
2007 | Journal Article | LibreCat-ID: 30314
Kolar J, Schafmeister F, Round S, Ertl H. Novel Three-Phase AC–AC Sparse Matrix Converters. IEEE Transactions on Power Electronics. 2007;22(5):1649-1661.
LibreCat
 
[15]
2007 | Dissertation | LibreCat-ID: 30315
Schafmeister F. Indirekte Sparse Matrix Konverter. ETH Zürich; 2007.
LibreCat | Files available
 
[14]
2006 | Journal Article | LibreCat-ID: 30313
Round S, Schafmeister F, Kolar J. Comparison of Performance and Realization Effort of a Very Sparse Matrix Converter to a Voltage DC Link PWM Inverter with Active Front End. IEEJ Transactions of the Institute of Electrical Engineers of Japan. 2006;126-D(5):578-588.
LibreCat
 
[13]
2005 | Conference Paper | LibreCat-ID: 30312
Round S, Schafmeister F, Pereira E, Serpa L, Kolar J. Comparison of Performance and Realization Effort of a Very Sparse Matrix Converter to a Voltage DC Link PWM Inverter with Active Front End. In: Proc. 5th IEEJ International Power Electronics Conference (IPEC). IEEJapan; 2005.
LibreCat
 
[12]
2005 | Conference Paper | LibreCat-ID: 30301
Schafmeister F, Rytz C, Kolar J. Analytical Calculation of the Conduction and Switching Losses of the Conventional Matrix Converter and the (Very) Sparse Matrix Converter. In: Proc. 20th IEEE Applied Power Electronics Conference (APEC). Vol 2. IEEE; 2005:875-881.
LibreCat
 
[11]
2005 | Journal Article | LibreCat-ID: 30311
Ide P, Schafmeister F, Fröhleke N, Grotstollen H. Enhanced Control Scheme for Three-Phase, Three-Level Rectifiers at Partial Load. IEEE Transactions on Industrial Electronics. 2005;52(3):719-726.
LibreCat
 
[10]
2004 | Conference Paper | LibreCat-ID: 30309
Schafmeister F, Kolar J. Novel Modulation Schemes for Conventional and Sparse Matrix Converters Facilitating Reactive Power Transfer Independent of Active Power Flow. In: Proc. 35th IEEE Power Electronics Specialists Conference (PESC). Vol 4. IEEE; 2004:2917-2923.
LibreCat
 
[9]
2004 | Conference Paper | LibreCat-ID: 30308
Ide P, Schafmeister F, Fröhleke N, Grotstollen H. Enhanced Control Scheme for Three-Phase / Three-Level Rectifiers at Partial Load. In: Proc. 35th IEEE Power Electronics Specialists Conference (PESC). Vol 1. IEEE; 2004:207-213.
LibreCat
 
[8]
2004 | Conference Paper | LibreCat-ID: 30310
Schafmeister F, Kolar J. Novel Hybrid Modulation Schemes Extending the Reactive Power Control Range of Conventional and Sparse Matrix Converters Operating at Maximum Output Voltage. In: Proc. 11th International Power Electronics and Motion Control Conference (EPE-PEMC). EPE; 2004.
LibreCat
 
[7]
2003 | Conference Paper | LibreCat-ID: 30307
Schafmeister F, Kolar J. Novel Modulation Schemes Minimizing the Switching Losses of Sparse Matrix Converters. In: Proc. IEEE Annual Industrial Electronics Society Conference (IECON). IEEE; 2003:2085-2090.
LibreCat
 
[6]
2003 | Conference Paper | LibreCat-ID: 30300
Schafmeister F, Herold S, Kolar J. Evaluation of 1200V-Si-IGBTs and 1300V-SiC-JFETs for Application in Three-Phase Very Sparse Matrix AC-AC Converter Systems. In: Proc. 18th IEEE Applied Power Electronics Conf. (APEC). Vol 1. IEEE; 2003:241-255.
LibreCat
 
[5]
2003 | Journal Article | LibreCat-ID: 30306
Schafmeister F, Baumann M, Kolar J. Analytically Closed Calculation of the Conduction Losses of Three-Phase AC-AC Sparse Matrix Converters. EPE Journal. 2003;13(1):5-14.
LibreCat
 
[4]
2002 | Conference Paper | LibreCat-ID: 30302
Schafmeister F, Baumann M, Kolar J. Analytically Closed Calculation of the Conduction and Switching Losses of Three-Phase AC-AC Sparse Matrix Converters. In: Proc. 10th International Power Electronics and Motion Control Conference (EPE-PEMC). EPE; 2002.
LibreCat
 
[3]
2002 | Conference Paper | LibreCat-ID: 30299
Kolar J, Baumann M, Schafmeister F, Ertl H. Novel Three-Phase AC-DC-AC Sparse Matrix Converter. In: Proc. 17th IEEE Applied Power Electronics Conf. (APEC). Vol 2. IEEE; 2002:777-791.
LibreCat
 
[2]
2002 | Conference Paper | LibreCat-ID: 30305
Schafmeister F, Kolar J. Analyse der Regelung einer permanenterregten Synchronmaschine bei Speisung durch einen dreiphasigen Sparse-Matrix-Konverter. In: Proc. Ansoft Inspiring Design Workshop. ; 2002.
LibreCat
 
[1]
2001 | Conference Paper | LibreCat-ID: 30124
Ide P, Schafmeister F, Fröhleke N. Active Common-Mode Voltage Cancellation for Three-Phase PWM Rectifier/Inverter Systems based on a New Topology. In: Proc. 16th IEEE Applied Power Electronics Conf. (APEC). Vol 1. IEEE; 2001:201-207.
LibreCat
 
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