[{"_id":"56174","user_id":"16148","department":[{"_id":"53"}],"language":[{"iso":"eng"}],"type":"conference","publication":"Proceedings of the 41st European Photovoltaic Solar Energy Conference","status":"public","date_updated":"2024-09-17T14:17:22Z","author":[{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X"},{"first_name":"Jörg","full_name":"Bendfeld, Jörg","id":"16148","last_name":"Bendfeld"}],"date_created":"2024-09-17T14:17:11Z","title":"PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems","conference":{"location":"Wien","end_date":"2024-09-27","start_date":"2024-09-23","name":"41st European Photovoltaic Solar Energy Conference"},"year":"2024","citation":{"short":"S. Krauter, J. Bendfeld, in: Proceedings of the 41st European Photovoltaic Solar Energy Conference, 2024.","mla":"Krauter, Stefan, and Jörg Bendfeld. “PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems.” <i>Proceedings of the 41st European Photovoltaic Solar Energy Conference</i>, 2024.","bibtex":"@inproceedings{Krauter_Bendfeld_2024, title={PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems}, booktitle={Proceedings of the 41st European Photovoltaic Solar Energy Conference}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2024} }","apa":"Krauter, S., &#38; Bendfeld, J. (2024). PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems. <i>Proceedings of the 41st European Photovoltaic Solar Energy Conference</i>. 41st European Photovoltaic Solar Energy Conference, Wien.","ama":"Krauter S, Bendfeld J. PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems. In: <i>Proceedings of the 41st European Photovoltaic Solar Energy Conference</i>. ; 2024.","ieee":"S. Krauter and J. Bendfeld, “PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems,” presented at the 41st European Photovoltaic Solar Energy Conference, Wien, 2024.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “PV Microinverters: Balcony Power Plants, Latest Efficiency Rankings, Yield Calculation for Overpowered Mini PV Systems.” In <i>Proceedings of the 41st European Photovoltaic Solar Energy Conference</i>, 2024."}},{"year":"2024","issue":"22","quality_controlled":"1","title":"Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants","date_created":"2024-11-07T06:14:06Z","publisher":"MDPI AG","abstract":[{"lang":"eng","text":"<jats:p>The market for microinverters is growing, especially in Europe. Driven by rising electricity prices and an easing in legislation since 2024, the number of mini-photovoltaic energy systems (mini-PVs) being installed is increasing substantially. Indoor and outdoor studies of microinverters have been carried out at Paderborn University since 2014. In the indoor lab, conversion efficiencies as a function of load have been measured with high accuracy and ranked according to Euro and CEC weightings; the latest rankings from 2024 are included in this paper. In the outdoor lab, energy yields have been measured using identical and calibrated crystalline silicon PV modules; until 2020, measurements were carried out using 215 Wp modules. Because of increasing PV module power ratings, 360 Wp modules were used from 2020 until 2024. In 2024, the test modules were upgraded to 410 Wp modules, taking into account the increase from 600 W to 800 W of inverter power limits, which is suitable for simplified operation permission (“plug-in”) in many European countries within a homogenised legislation area for such mini-photovoltaic energy systems or “balcony power plants”. This legislation for simplified operation also covers overpowered mini-plants, although the maximum AC output remains limited to 800 W. Presently, yield assessments are being carried out in the outdoor lab, which will take at least a year to be valid and comparable. Kits consisting of PV modules, inverters, and mounting systems are also being evaluated. Yield rankings sometimes differ from efficiency rankings due to the use of different MPPT algorithms with different MPP approach speeds and accuracies. To accelerate yield assessment, we developed a novel, simple formula to determine energy yield for any module and inverter configuration, including overpowered systems. This is a linear approach, determined by just two coefficients, a and b, which are given for several inverters. To reduce costs, inverters will be integrated into the module frame or the module terminal box in the future.</jats:p>"}],"publication":"Energies","language":[{"iso":"eng"}],"intvolume":"        17","citation":{"bibtex":"@article{Krauter_Bendfeld_2024, title={Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants}, volume={17}, DOI={<a href=\"https://doi.org/10.3390/en17225551\">10.3390/en17225551</a>}, number={225551}, journal={Energies}, publisher={MDPI AG}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2024} }","short":"S. Krauter, J. Bendfeld, Energies 17 (2024).","mla":"Krauter, Stefan, and Jörg Bendfeld. “Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants.” <i>Energies</i>, vol. 17, no. 22, 5551, MDPI AG, 2024, doi:<a href=\"https://doi.org/10.3390/en17225551\">10.3390/en17225551</a>.","apa":"Krauter, S., &#38; Bendfeld, J. (2024). Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants. <i>Energies</i>, <i>17</i>(22), Article 5551. <a href=\"https://doi.org/10.3390/en17225551\">https://doi.org/10.3390/en17225551</a>","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants.” <i>Energies</i> 17, no. 22 (2024). <a href=\"https://doi.org/10.3390/en17225551\">https://doi.org/10.3390/en17225551</a>.","ieee":"S. Krauter and J. Bendfeld, “Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants,” <i>Energies</i>, vol. 17, no. 22, Art. no. 5551, 2024, doi: <a href=\"https://doi.org/10.3390/en17225551\">10.3390/en17225551</a>.","ama":"Krauter S, Bendfeld J. Efficiency Ranking of Photovoltaic Microinverters and Energy Yield Estimations for Photovoltaic Balcony Power Plants. <i>Energies</i>. 2024;17(22). doi:<a href=\"https://doi.org/10.3390/en17225551\">10.3390/en17225551</a>"},"publication_identifier":{"issn":["1996-1073"]},"publication_status":"published","doi":"10.3390/en17225551","volume":17,"author":[{"id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X","first_name":"Stefan"},{"full_name":"Bendfeld, Jörg","id":"16148","last_name":"Bendfeld","first_name":"Jörg"}],"date_updated":"2024-11-07T06:14:45Z","status":"public","type":"journal_article","article_number":"5551","department":[{"_id":"53"}],"user_id":"16148","_id":"56929"},{"year":"2023","citation":{"apa":"Krauter, S., &#38; Bendfeld, J. (2023). PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues. <i>Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition</i>. 40th European Photovoltaik Solar Energy Conference and Exhibition, Lisbon, Portugal.","bibtex":"@inproceedings{Krauter_Bendfeld_2023, title={PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues}, booktitle={Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2023} }","mla":"Krauter, Stefan, and Jörg Bendfeld. “PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues.” <i>Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition</i>, 2023.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition, 2023.","ama":"Krauter S, Bendfeld J. PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues. In: <i>Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition</i>. ; 2023.","ieee":"S. Krauter and J. Bendfeld, “PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues,” presented at the 40th European Photovoltaik Solar Energy Conference and Exhibition, Lisbon, Portugal, 2023.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues.” In <i>Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition</i>, 2023."},"date_updated":"2023-10-10T11:23:43Z","author":[{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","orcid":"0000-0002-3594-260X","last_name":"Krauter"},{"first_name":"Jörg","id":"16148","full_name":"Bendfeld, Jörg","last_name":"Bendfeld"}],"date_created":"2023-09-18T08:03:23Z","title":"PV Microinverters: Latest Efficiency Rankings, Energy Yield Assessments, Firmware Issues","conference":{"end_date":"2023-09-22","location":"Lisbon, Portugal","name":"40th European Photovoltaik Solar Energy Conference and Exhibition","start_date":"2023-0-18"},"type":"conference","publication":"Proceedings of the 40th European Photovoltaik Solar Energy Conference and Exhibition","status":"public","_id":"47119","user_id":"16148","department":[{"_id":"53"}],"language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"_id":"32334","department":[{"_id":"53"}],"user_id":"16148","abstract":[{"lang":"eng","text":"The market for microinverters is growing, especially in Europe. Driven by the strongly rising prices for electricity, many small photovoltaic energy systems are being installed. Since monitoring for these plants is often quite costly, their yields are often not logged. Since 2014, microinverters have been studied at the University of Paderborn. The investigations are divided into indoor and outdoor tests. In the indoor area conversion efficiencies as a function of load have been measured with high accuracy and ranked according to Euro- and CEC weightings. In the outdoor laboratory, the behavior in the real world is tested. Energy yields have been measured outdoors via identical and calibrated crystalline silicon PV modules. Here, the investigations were carried out with modules of the power of 215 Wp until the year 2020. Because of the increasing module power nowadays, modules with an output of 360 Wp are now being used. To assess the influence of PV module size, two extremes have been investigated: A rather small module with 215 Wp - as it has been used 10 years ago, and a brand-new module (2021) offering 360 Wp. Both types of modules contain 60 solar cells in series connection. Appling the low-power modules, the challenge for the different micro-inverters has been during weak-light conditions, using the high-power modules, some inverters temporarily reach their power limits and yield is reduced. A method using a reference configuration of inverter & module and a linear equation resulting in the actual yield, any module & inverter configuration can be characterized by just the two coefficients."}],"status":"public","publication":"Proceedings of the 49th IEEE Photovoltaic Specialists Conference","type":"conference","title":"Microinverter testing update using high power modules: Efficiency, yield, and conformity to a new ”estimation formula” for variation of PV panel size","conference":{"end_date":"2022-06-10","location":"Philadelphia, PA, USA","name":"49th IEEE Photovoltaic Specialists Conference","start_date":"2022-06-05"},"date_updated":"2022-07-11T06:58:40Z","author":[{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","orcid":"0000-0002-3594-260X","last_name":"Krauter"},{"full_name":"Bendfeld, Jörg","id":"16148","last_name":"Bendfeld","first_name":"Jörg"},{"first_name":"Marius Claus","last_name":"Möller","full_name":"Möller, Marius Claus","id":"72391"}],"date_created":"2022-07-08T07:52:03Z","year":"2022","citation":{"chicago":"Krauter, Stefan, Jörg Bendfeld, and Marius Claus Möller. “Microinverter Testing Update Using High Power Modules: Efficiency, Yield, and Conformity to a New ”estimation Formula” for Variation of PV Panel Size.” In <i>Proceedings of the 49th IEEE Photovoltaic Specialists Conference</i>, 2022.","ieee":"S. Krauter, J. Bendfeld, and M. C. Möller, “Microinverter testing update using high power modules: Efficiency, yield, and conformity to a new ”estimation formula” for variation of PV panel size,” presented at the 49th IEEE Photovoltaic Specialists Conference, Philadelphia, PA, USA, 2022.","ama":"Krauter S, Bendfeld J, Möller MC. Microinverter testing update using high power modules: Efficiency, yield, and conformity to a new ”estimation formula” for variation of PV panel size. In: <i>Proceedings of the 49th IEEE Photovoltaic Specialists Conference</i>. ; 2022.","apa":"Krauter, S., Bendfeld, J., &#38; Möller, M. C. (2022). Microinverter testing update using high power modules: Efficiency, yield, and conformity to a new ”estimation formula” for variation of PV panel size. <i>Proceedings of the 49th IEEE Photovoltaic Specialists Conference</i>. 49th IEEE Photovoltaic Specialists Conference, Philadelphia, PA, USA.","mla":"Krauter, Stefan, et al. “Microinverter Testing Update Using High Power Modules: Efficiency, Yield, and Conformity to a New ”estimation Formula” for Variation of PV Panel Size.” <i>Proceedings of the 49th IEEE Photovoltaic Specialists Conference</i>, 2022.","short":"S. Krauter, J. Bendfeld, M.C. Möller, in: Proceedings of the 49th IEEE Photovoltaic Specialists Conference, 2022.","bibtex":"@inproceedings{Krauter_Bendfeld_Möller_2022, title={Microinverter testing update using high power modules: Efficiency, yield, and conformity to a new ”estimation formula” for variation of PV panel size}, booktitle={Proceedings of the 49th IEEE Photovoltaic Specialists Conference}, author={Krauter, Stefan and Bendfeld, Jörg and Möller, Marius Claus}, year={2022} }"}},{"year":"2022","citation":{"ama":"Krauter S, Bendfeld J. Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for any PV Panel Size at different Microinverter types. In: <i>Proceedings of the 8th World Conference on Photovoltaik Energy Conversion</i>. ; 2022.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for Any PV Panel Size at Different Microinverter Types.” In <i>Proceedings of the 8th World Conference on Photovoltaik Energy Conversion</i>, 2022.","ieee":"S. Krauter and J. Bendfeld, “Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for any PV Panel Size at different Microinverter types,” presented at the 8th World Conference on Photovoltaik Energy Conversion, Milano / Italy, 2022.","mla":"Krauter, Stefan, and Jörg Bendfeld. “Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for Any PV Panel Size at Different Microinverter Types.” <i>Proceedings of the 8th World Conference on Photovoltaik Energy Conversion</i>, 2022.","bibtex":"@inproceedings{Krauter_Bendfeld_2022, title={Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for any PV Panel Size at different Microinverter types}, booktitle={Proceedings of the 8th World Conference on Photovoltaik Energy Conversion}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2022} }","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 8th World Conference on Photovoltaik Energy Conversion, 2022.","apa":"Krauter, S., &#38; Bendfeld, J. (2022). Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for any PV Panel Size at different Microinverter types. <i>Proceedings of the 8th World Conference on Photovoltaik Energy Conversion</i>. 8th World Conference on Photovoltaik Energy Conversion, Milano / Italy."},"date_updated":"2022-11-29T10:00:44Z","date_created":"2022-11-29T09:55:14Z","author":[{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X"},{"first_name":"Jörg","full_name":"Bendfeld, Jörg","id":"16148","last_name":"Bendfeld"}],"title":"Microinverter PV Systems: New Efficiency Rankings and Formula for Energy Yield Assessment for any PV Panel Size at different Microinverter types","conference":{"start_date":"2022-09-26","name":"8th World Conference on Photovoltaik Energy Conversion","location":"Milano / Italy","end_date":"2022-09-30"},"type":"conference","publication":"Proceedings of the 8th World Conference on Photovoltaik Energy Conversion","status":"public","_id":"34155","user_id":"16148","department":[{"_id":"53"}],"language":[{"iso":"eng"}]},{"quality_controlled":"1","year":"2021","date_created":"2021-09-16T10:17:11Z","title":"Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields","publication":"Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)","abstract":[{"lang":"eng","text":"Efficiencies and energy yields of microinverters available on the market during 2014‒2021 have been \r\nmeasured, compared, and ranked. Conversion efficiencies as a function of load have been measured indoors with high \r\naccuracy and ranked according to Euro- and CEC weightings. Energy yields have been measured outdoors via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp (until 2020) and 360 Wp (starting 2021). Inverters \r\nwith two inputs have been fed by two of those modules. DC input, AC power output and energy yield of each micro\u0002inverter have been recorded by individual calibrated electricity meters. CEC and EU efficiency rankings have been \r\ncomputed and compared. To assess the influence of PV module size, two extremes have been investigated: A rather \r\nsmall module with 215 Wp - as it has been used 10 years ago, and a brand-new module (2021) offering 360 Wp. Both \r\ntypes of modules contain 60 solar cells in series connection. Appling the low-power modules, the challenge for the \r\ndifferent micro-inverters has been during weak-light conditions, using the high-power modules, some inverters \r\ntemporarily reach their power limits and yield is reduced. A method using a reference configuration of inverter & \r\nmodule and a linear equation y = ax + b resulting in the actual yield, any module & inverter configuration can be \r\ncharacterized by just the coefficients a and b."}],"file":[{"access_level":"closed","file_name":"Krauter Bendfeld - Module size Microinverters - EUPVSEC 2021.pdf","file_id":"29175","file_size":5413518,"creator":"krauter","date_created":"2022-01-06T13:20:31Z","date_updated":"2022-01-06T13:20:31Z","relation":"main_file","success":1,"content_type":"application/pdf"}],"ddc":["620"],"keyword":["AC-modules","Microinverter","Power Conditioning","Efficiency","Yield","PV module size","saturation","performance"],"language":[{"iso":"eng"}],"publication_status":"published","has_accepted_license":"1","publication_identifier":{"isbn":["3-936338-78-7"]},"citation":{"ama":"Krauter S, Bendfeld J. Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. In: <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>. ; 2021:659-663. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” In <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–63, 2021. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>.","ieee":"S. Krauter and J. Bendfeld, “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields,” in <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–663, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663.","mla":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–63, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","bibtex":"@inproceedings{Krauter_Bendfeld_2021, title={Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2021}, pages={659–663} }","apa":"Krauter, S., &#38; Bendfeld, J. (2021). Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–663. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>"},"page":"659 - 663","date_updated":"2022-01-06T13:22:03Z","author":[{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X"},{"first_name":"Jörg","last_name":"Bendfeld","id":"16148","full_name":"Bendfeld, Jörg"}],"doi":"10.4229/EUPVSEC20212021-4CO.3.4","conference":{"end_date":"2021-09-10","start_date":"2021-09-06","name":"38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)"},"type":"conference","status":"public","_id":"24550","user_id":"28836","department":[{"_id":"53"}],"file_date_updated":"2022-01-06T13:20:31Z"},{"publication":"Proceedings of the EUPVSEC 2020","type":"conference","abstract":[{"lang":"eng","text":" Efficiencies and energy yields of microinverters available on the market during 2014‒2020 have been \r\nmeasured, compared, and ranked. Conversion efficiencies as a function of load have been measured indoors with high \r\naccuracy and ranked according to Euro- and CEC weightings. Energy yields have been measured outdoors via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp each. Inverters with two inputs have been fed by \r\ntwo of those modules. DC input, AC power output and energy yield of each micro-inverter have been recorded by \r\nindividual calibrated electricity meters. Apparently, some inverters have been optimized for high irradiance levels \r\nand ranked better at the CEC efficiency ranking, others performed very well also at low irradiance levels, thus \r\nranking higher at in the EU efficiency ranking. Efficiency ranks are slightly deviating from rankings by energy yield \r\nmeasurements. At one inverter, a slow MPPT algorithm that barely could follow quickly changing irradiance levels is \r\nmost probably responsible for this effect. Another inverter switched off for a while after operation at high power, \r\nanother one failed permanently. Apparently, some inverters are been optimized to show excellent datasheet ratings \r\nfor EU- or CEC- efficiency. On the other hand, two inverters (each featuring two inputs) did not show an outstanding \r\nperformance at the EU- and CEC-ratings but achieved leading ranks for AC energy yields. For the customer, AC \r\nyield is a major performance indicator of a microinverter and should be included in the datasheet."}],"status":"public","_id":"18390","department":[{"_id":"53"}],"user_id":"28836","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["\t3-936338-73-6"]},"publication_status":"published","year":"2020","page":"935 - 938","citation":{"ieee":"S. Krauter and J. Bendfeld, “Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields,” in <i>Proceedings of the EUPVSEC 2020</i>, online, 2020, pp. 935–938, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">10.4229/EUPVSEC20202020-4DO.7.2</a>.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields.” In <i>Proceedings of the EUPVSEC 2020</i>, 935–38, 2020. <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2</a>.","ama":"Krauter S, Bendfeld J. Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields. In: <i>Proceedings of the EUPVSEC 2020</i>. ; 2020:935-938. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">10.4229/EUPVSEC20202020-4DO.7.2</a>","apa":"Krauter, S., &#38; Bendfeld, J. (2020). Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields. <i>Proceedings of the EUPVSEC 2020</i>, 935–938. <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2</a>","mla":"Krauter, Stefan, and Jörg Bendfeld. “Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields.” <i>Proceedings of the EUPVSEC 2020</i>, 2020, pp. 935–38, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">10.4229/EUPVSEC20202020-4DO.7.2</a>.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the EUPVSEC 2020, 2020, pp. 935–938.","bibtex":"@inproceedings{Krauter_Bendfeld_2020, title={Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4DO.7.2\">10.4229/EUPVSEC20202020-4DO.7.2</a>}, booktitle={Proceedings of the EUPVSEC 2020}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2020}, pages={935–938} }"},"date_updated":"2022-01-06T13:02:11Z","date_created":"2020-08-27T06:28:42Z","author":[{"first_name":"Stefan","full_name":"Krauter, Stefan","id":"28836","last_name":"Krauter","orcid":"0000-0002-3594-260X"},{"first_name":"Jörg","id":"16148","full_name":"Bendfeld, Jörg","last_name":"Bendfeld"}],"title":"Micro-Inverters: An Update of Comparison of Conversion Efficiencies and Energy Yields","doi":"10.4229/EUPVSEC20202020-4DO.7.2","conference":{"location":"online","end_date":"2020-09-11","start_date":"2020-09-07","name":"37th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2020)"}},{"year":"2020","citation":{"apa":"Krauter, S., &#38; Bendfeld, J. (2020). Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen. <i>Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)</i>. 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland), 17.–19. März 2020 (verschoben auf 31. August bis 2. September 2020), Bad Staffelstein.","mla":"Krauter, Stefan, and Jörg Bendfeld. “Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen.” <i>Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)</i>, 2020.","short":"S. Krauter, J. Bendfeld, in: Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland), 2020.","bibtex":"@inproceedings{Krauter_Bendfeld_2020, title={Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen}, booktitle={Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2020} }","ama":"Krauter S, Bendfeld J. Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen. In: <i>Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)</i>. ; 2020.","ieee":"S. Krauter and J. Bendfeld, “Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen,” presented at the 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland), 17.–19. März 2020 (verschoben auf 31. August bis 2. September 2020), Bad Staffelstein, 2020.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen.” In <i>Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)</i>, 2020."},"publication_status":"published","title":"Einfluss der Betriebstemperatur auf den Wirkungsgrad von Modul-Wechselrichtern für PV-Netzeinspeisungen","conference":{"name":"35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland), 17.–19. März 2020 (verschoben auf 31. August bis 2. September 2020)","start_date":"2020-08-31","end_date":"2020-09-02","location":"Bad Staffelstein"},"date_updated":"2022-01-06T12:26:08Z","author":[{"orcid":"0000-0002-3594-260X","last_name":"Krauter","full_name":"Krauter, Stefan","id":"28836","first_name":"Stefan"},{"first_name":"Jörg","last_name":"Bendfeld","id":"16148","full_name":"Bendfeld, Jörg"}],"date_created":"2020-04-27T05:55:09Z","status":"public","publication":"Tagungsband des 35. Symposiums für Photovoltaische Solarenergie, Kloster Banz, Bad Staffelstein (Deutschland)","type":"conference","language":[{"iso":"ger"}],"_id":"16857","department":[{"_id":"53"}],"user_id":"28836"},{"user_id":"28836","department":[{"_id":"53"}],"_id":"18387","file_date_updated":"2022-01-06T12:27:02Z","type":"conference","status":"public","author":[{"first_name":"Stefan","orcid":"0000-0002-3594-260X","last_name":"Krauter","full_name":"Krauter, Stefan","id":"28836"},{"first_name":"Jörg","last_name":"Bendfeld","full_name":"Bendfeld, Jörg","id":"16148"}],"date_updated":"2022-01-06T12:32:47Z","doi":"10.4229/EUPVSEC20202020-4AV.3.6","conference":{"location":"online","end_date":"2020-09-11","start_date":"2020-09-07","name":"EU PVSEC 2020, 37th EU Photovoltaik Solar Energy Conference"},"publication_status":"published","publication_identifier":{"issn":["3-936338-73-6"]},"has_accepted_license":"1","citation":{"apa":"Krauter, S., &#38; Bendfeld, J. (2020). Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters. <i>Proceedings of the EU PVSEC 2020 </i>, 1179–1180. <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6</a>","short":"S. Krauter, J. Bendfeld, in: Proceedings of the EU PVSEC 2020 , 2020, pp. 1179–1180.","bibtex":"@inproceedings{Krauter_Bendfeld_2020, title={Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">10.4229/EUPVSEC20202020-4AV.3.6</a>}, booktitle={Proceedings of the EU PVSEC 2020 }, author={Krauter, Stefan and Bendfeld, Jörg}, year={2020}, pages={1179–1180} }","mla":"Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters.” <i>Proceedings of the EU PVSEC 2020 </i>, 2020, pp. 1179–80, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">10.4229/EUPVSEC20202020-4AV.3.6</a>.","ama":"Krauter S, Bendfeld J. Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters. In: <i>Proceedings of the EU PVSEC 2020 </i>. ; 2020:1179-1180. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">10.4229/EUPVSEC20202020-4AV.3.6</a>","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters.” In <i>Proceedings of the EU PVSEC 2020 </i>, 1179–80, 2020. <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6</a>.","ieee":"S. Krauter and J. Bendfeld, “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters,” in <i>Proceedings of the EU PVSEC 2020 </i>, online, 2020, pp. 1179–1180, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6\">10.4229/EUPVSEC20202020-4AV.3.6</a>."},"jel":["Q42"],"page":"1179 - 1180","language":[{"iso":"eng"}],"ddc":["620"],"keyword":["AC-modules","Microinverter","Power Conditioning","Thermal Performance","Ventilation","Stability","Efficiency","Yield"],"publication":"Proceedings of the EU PVSEC 2020 ","file":[{"file_size":599660,"access_level":"closed","file_name":"Krauter Bendfeld - Microinverters at elevated temperatures EUPVSEC 2020.pdf","file_id":"29171","date_updated":"2022-01-06T12:27:02Z","creator":"krauter","date_created":"2022-01-06T12:27:02Z","success":1,"relation":"main_file","content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":" During comparative measurements of different PV microinverters, two yield issues came up that could \r\nnot be explored via conventional efficiency measurements, but do have a significant impact on electrical energy \r\nyield: First category of issues are either sluggish or nervously acting maximum–power–point–tracking devices, which \r\nlead to reduced energy yields. The other category of issues is thermal: As a first explanation for observed reduced \r\nenergy yields, it has been assumed that the conversion efficiency degrades at higher operating temperatures. This \r\nmatter has been investigated in this article: A change in conversion efficiency could not be observed for elevated \r\noperation temperatures up to 50°C, despite high-precision and repeated measurements. But it was found that some \r\ninverters temporarily interrupted (or entirely stopped) operation after long periods of running at high temperatures. \r\nAlso, a reduction in potential maximum power output has been detected for those inverters. Summarizing: With a \r\nhigh degree of certainty it can be stated that those reported yield losses have been caused by the temporary shutdowns \r\nand power limitations of the inverters."}],"date_created":"2020-08-27T06:26:25Z","title":"Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters","quality_controlled":"1","year":"2020"},{"author":[{"id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X","first_name":"Stefan"},{"first_name":"Jörg","last_name":"Bendfeld","id":"16148","full_name":"Bendfeld, Jörg"}],"date_updated":"2022-01-07T10:10:43Z","main_file_link":[{"url":"https://ieeexplore.ieee.org/document/9300953"}],"doi":"10.1109/PVSC45281.2020.9300953","conference":{"name":"47th IEEE Photovoltaic Specialists Conference (PVSC 47)","start_date":"2020-06-15","end_date":"2020-08-21","location":"VIRTUAL MEETING"},"publication_status":"published","publication_identifier":{"issn":[" 0160-8371"]},"citation":{"chicago":"Krauter, Stefan, and Jörg Bendfeld. “Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields.” In <i>Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING</i>, 1429–32. online: IEEE, 2020. <a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">https://doi.org/10.1109/PVSC45281.2020.9300953</a>.","ieee":"S. Krauter and J. Bendfeld, “Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields,” in <i>Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING</i>, VIRTUAL MEETING, 2020, pp. 1429–1432, doi: <a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">10.1109/PVSC45281.2020.9300953</a>.","ama":"Krauter S, Bendfeld J. Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields. In: <i>Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING</i>. IEEE; 2020:1429-1432. doi:<a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">10.1109/PVSC45281.2020.9300953</a>","bibtex":"@inproceedings{Krauter_Bendfeld_2020, place={online}, title={Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields}, DOI={<a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">10.1109/PVSC45281.2020.9300953</a>}, booktitle={Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING}, publisher={IEEE}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2020}, pages={1429–1432} }","mla":"Krauter, Stefan, and Jörg Bendfeld. “Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields.” <i>Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING</i>, IEEE, 2020, pp. 1429–32, doi:<a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">10.1109/PVSC45281.2020.9300953</a>.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING, IEEE, online, 2020, pp. 1429–1432.","apa":"Krauter, S., &#38; Bendfeld, J. (2020). Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields. <i>Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING</i>, 1429–1432. <a href=\"https://doi.org/10.1109/PVSC45281.2020.9300953\">https://doi.org/10.1109/PVSC45281.2020.9300953</a>"},"page":"1429-1432","place":"online","user_id":"28836","department":[{"_id":"53"}],"_id":"16899","type":"conference","status":"public","date_created":"2020-04-29T05:31:12Z","publisher":"IEEE","title":"Comparison of Microinverters: Update on Rankings of Conversion Efficiencies and Energy Yields","quality_controlled":"1","year":"2020","language":[{"iso":"eng"}],"keyword":["yield","AC","micro-inverter","MPPT","CEC rating","EU efficiency","Photovoltaic","Solar"],"publication":"Proceedings of the 47th IEEE Photovoltaic Specialists Conference (PVSC 47) JUNE 15 - AUGUST 21, 2020 VIRTUAL MEETING","abstract":[{"text":"To compare efficiency and yield of many micro-inverters available on the world market in 2014-2020, an in- and outdoor test laboratory at the University of Paderborn has been set up. The inverters have been fed by identical and calibrated crystalline silicon PV modules of 215 Wp. To monitor accurately DC input, AC power output and energy yield, each of the micro-inverters has been equipped with a calibrated electricity meter. For micro-inverters requiring control units for grid-feeding that has been acquired also. The comparison covers efficiency-load characteristics as well as electrical energy yields. Purchase costs vary considerably between the models in comparison, sometimes inverter costs are higher than module costs, particularly if an additional grid-connection or interface device is needed for operation. The weighted conversion efficiency according to EU and CEC standards has been measured and calculated. While some inverters have been optimized for high irradiance levels, they ranked better at the CEC efficiency, others performed very well also for low irradiance levels, thus ranking higher at in the EU-efficiency tables. These results are deviating from the actual energy yield measurements, which show a slightly different ranking. At one inverter, an accurate, but very slow MPPT algorithm that barely could follow quickly changing irradiance levels could be the reason for this effect. Another inverter switched off after operation at high power output for a while. Apparently, some inverters are been optimized to show excellent EU and CEC efficiency ratings. Two of the inverters featuring two inputs did not show an exceptional performance at the EU- and CEC-ratings, but they achieved top ranks at the AC energy yield for the first years. For the customer, the AC yield is a major performance indicator of any microinverter and should be included in the datasheet.","lang":"eng"}]},{"year":"2019","citation":{"apa":"Balluff, S., Bendfeld, J., &#38; Krauter, S. (2019). Meteorological Data Forecast using RNN. In <i>Deep Learning and Neural Networks</i>. IGI Global. <a href=\"https://doi.org/10.4018/978-1-7998-0414-7.ch050\">https://doi.org/10.4018/978-1-7998-0414-7.ch050</a>","mla":"Balluff, Stefan, et al. “Meteorological Data Forecast Using RNN.” <i>Deep Learning and Neural Networks</i>, IGI Global, 2019, doi:<a href=\"https://doi.org/10.4018/978-1-7998-0414-7.ch050\">10.4018/978-1-7998-0414-7.ch050</a>.","bibtex":"@inbook{Balluff_Bendfeld_Krauter_2019, title={Meteorological Data Forecast using RNN}, DOI={<a href=\"https://doi.org/10.4018/978-1-7998-0414-7.ch050\">10.4018/978-1-7998-0414-7.ch050</a>}, booktitle={Deep Learning and Neural Networks}, publisher={IGI Global}, author={Balluff, Stefan and Bendfeld, Jörg and Krauter, Stefan}, year={2019} }","short":"S. Balluff, J. Bendfeld, S. Krauter, in: Deep Learning and Neural Networks, IGI Global, 2019.","ama":"Balluff S, Bendfeld J, Krauter S. Meteorological Data Forecast using RNN. In: <i>Deep Learning and Neural Networks</i>. IGI Global; 2019. doi:<a href=\"https://doi.org/10.4018/978-1-7998-0414-7.ch050\">10.4018/978-1-7998-0414-7.ch050</a>","chicago":"Balluff, Stefan, Jörg Bendfeld, and Stefan Krauter. “Meteorological Data Forecast Using RNN.” In <i>Deep Learning and Neural Networks</i>. IGI Global, 2019. <a href=\"https://doi.org/10.4018/978-1-7998-0414-7.ch050\">https://doi.org/10.4018/978-1-7998-0414-7.ch050</a>.","ieee":"S. Balluff, J. Bendfeld, and S. Krauter, “Meteorological Data Forecast using RNN,” in <i>Deep Learning and Neural Networks</i>, IGI Global, 2019."},"publication_status":"published","title":"Meteorological Data Forecast using RNN","doi":"10.4018/978-1-7998-0414-7.ch050","date_updated":"2023-10-27T08:29:56Z","publisher":"IGI Global","date_created":"2023-10-27T08:28:27Z","author":[{"first_name":"Stefan","full_name":"Balluff, Stefan","last_name":"Balluff"},{"id":"16148","full_name":"Bendfeld, Jörg","last_name":"Bendfeld","first_name":"Jörg"},{"full_name":"Krauter, Stefan","id":"28836","orcid":"0000-0002-3594-260X","last_name":"Krauter","first_name":"Stefan"}],"abstract":[{"text":"<jats:p>Gathering knowledge not only of the current but also the upcoming wind speed is getting more and more important as the experience of operating and maintaining wind turbines is increasing. Not only with regards to operation and maintenance tasks such as gearbox and generator checks but moreover due to the fact that energy providers have to sell the right amount of their converted energy at the European energy markets, the knowledge of the wind and hence electrical power of the next day is of key importance. Selling more energy as has been offered is penalized as well as offering less energy as contractually promised. In addition to that the price per offered kWh decreases in case of a surplus of energy. Achieving a forecast there are various methods in computer science: fuzzy logic, linear prediction or neural networks. This paper presents current results of wind speed forecasts using recurrent neural networks (RNN) and the gradient descent method plus a backpropagation learning algorithm. Data used has been extracted from NASA's Modern Era-Retrospective analysis for Research and Applications (MERRA) which is calculated by a GEOS-5 Earth System Modeling and Data Assimilation system. The presented results show that wind speed data can be forecasted using historical data for training the RNN. Nevertheless, the current set up system lacks robustness and can be improved further with regards to accuracy.</jats:p>","lang":"eng"}],"status":"public","publication":"Deep Learning and Neural Networks","type":"book_chapter","language":[{"iso":"eng"}],"_id":"48501","department":[{"_id":"53"}],"user_id":"16148"},{"citation":{"apa":"Bendfeld, J., Balluff, S., Wübbeke, S., &#38; Krauter, S. (2017). Performance of MERRA2 Data Compared to Floating LiDAR. In <i>Proceedings of the DEWEK 2017</i>. Bremen.","bibtex":"@inproceedings{Bendfeld_Balluff_Wübbeke_Krauter_2017, place={Bremen}, title={Performance of MERRA2 Data Compared to Floating LiDAR}, booktitle={Proceedings of the DEWEK 2017}, author={Bendfeld, Jörg and Balluff, Stefan and Wübbeke, Stefan and Krauter, Stefan}, year={2017} }","mla":"Bendfeld, Jörg, et al. “Performance of MERRA2 Data Compared to Floating LiDAR.” <i>Proceedings of the DEWEK 2017</i>, 2017.","short":"J. Bendfeld, S. Balluff, S. Wübbeke, S. Krauter, in: Proceedings of the DEWEK 2017, Bremen, 2017.","ama":"Bendfeld J, Balluff S, Wübbeke S, Krauter S. Performance of MERRA2 Data Compared to Floating LiDAR. In: <i>Proceedings of the DEWEK 2017</i>. Bremen; 2017.","ieee":"J. Bendfeld, S. Balluff, S. Wübbeke, and S. Krauter, “Performance of MERRA2 Data Compared to Floating LiDAR,” in <i>Proceedings of the DEWEK 2017</i>, Bremen, 2017.","chicago":"Bendfeld, Jörg, Stefan Balluff, Stefan Wübbeke, and Stefan Krauter. “Performance of MERRA2 Data Compared to Floating LiDAR.” In <i>Proceedings of the DEWEK 2017</i>. Bremen, 2017."},"year":"2017","place":"Bremen","conference":{"end_date":"2017-11-18","location":"Bremen","name":"Dewek 17","start_date":"2017-11-17"},"title":"Performance of MERRA2 Data Compared to Floating LiDAR","date_created":"2019-01-14T07:07:04Z","author":[{"first_name":"Jörg","last_name":"Bendfeld","id":"16148","full_name":"Bendfeld, Jörg"},{"first_name":"Stefan","last_name":"Balluff","full_name":"Balluff, Stefan"},{"last_name":"Wübbeke","full_name":"Wübbeke, Stefan","first_name":"Stefan"},{"first_name":"Stefan","id":"28836","full_name":"Krauter, Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X"}],"date_updated":"2022-01-06T07:03:13Z","status":"public","publication":"Proceedings of the DEWEK 2017","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"53"}],"user_id":"16148","_id":"6633"},{"_id":"6634","user_id":"16148","department":[{"_id":"53"}],"language":[{"iso":"eng"}],"type":"conference","publication":"Proceedings of the DEWEK 2017","status":"public","date_updated":"2022-01-06T07:03:13Z","date_created":"2019-01-14T07:10:34Z","author":[{"first_name":"Jörg","id":"16148","full_name":"Bendfeld, Jörg","last_name":"Bendfeld"},{"first_name":"Stefan","full_name":"Balluff, Stefan","last_name":"Balluff"},{"last_name":"Krüger","full_name":"Krüger, J.","first_name":"J."},{"orcid":"0000-0002-3594-260X","last_name":"Krauter","id":"28836","full_name":"Krauter, Stefan","first_name":"Stefan"}],"title":"Short-term wind speed and power prediction for offshore wind farms using neural networks","conference":{"name":"Dewek 17","start_date":"2017-11-17","end_date":"2017-11-18","location":"Bremen"},"place":"Bremen","year":"2017","citation":{"apa":"Bendfeld, J., Balluff, S., Krüger, J., &#38; Krauter, S. (2017). Short-term wind speed and power prediction for offshore wind farms using neural networks. In <i>Proceedings of the DEWEK 2017</i>. Bremen.","short":"J. Bendfeld, S. Balluff, J. Krüger, S. Krauter, in: Proceedings of the DEWEK 2017, Bremen, 2017.","bibtex":"@inproceedings{Bendfeld_Balluff_Krüger_Krauter_2017, place={Bremen}, title={Short-term wind speed and power prediction for offshore wind farms using neural networks}, booktitle={Proceedings of the DEWEK 2017}, author={Bendfeld, Jörg and Balluff, Stefan and Krüger, J. and Krauter, Stefan}, year={2017} }","mla":"Bendfeld, Jörg, et al. “Short-Term Wind Speed and Power Prediction for Offshore Wind Farms Using Neural Networks.” <i>Proceedings of the DEWEK 2017</i>, 2017.","ieee":"J. Bendfeld, S. Balluff, J. Krüger, and S. Krauter, “Short-term wind speed and power prediction for offshore wind farms using neural networks,” in <i>Proceedings of the DEWEK 2017</i>, Bremen, 2017.","chicago":"Bendfeld, Jörg, Stefan Balluff, J. Krüger, and Stefan Krauter. “Short-Term Wind Speed and Power Prediction for Offshore Wind Farms Using Neural Networks.” In <i>Proceedings of the DEWEK 2017</i>. Bremen, 2017.","ama":"Bendfeld J, Balluff S, Krüger J, Krauter S. Short-term wind speed and power prediction for offshore wind farms using neural networks. In: <i>Proceedings of the DEWEK 2017</i>. Bremen; 2017."}},{"title":"Update on rankings of conversion efficiencies and energy yield of micro-inverters, including inverters for two PV modules","conference":{"location":"Amsterdam","end_date":"2017-09-25","start_date":"2017-09-25","name":"33rd European Photovoltaic Solar Energy Conference"},"date_updated":"2022-01-06T07:03:13Z","date_created":"2019-01-14T08:13:03Z","author":[{"first_name":"Jörg","id":"16148","full_name":"Bendfeld, Jörg","last_name":"Bendfeld"},{"first_name":"Stefan","orcid":"0000-0002-3594-260X","last_name":"Krauter","full_name":"Krauter, Stefan","id":"28836"}],"year":"2017","citation":{"short":"J. Bendfeld, S. Krauter, in: Proceedings of the 33rd European Photovoltaic Solar Energy Conference, Amsterdam, (Niederlande), 25.-29. Sept. 2017, S. 1477–1481, 2017.","mla":"Bendfeld, Jörg, and Stefan Krauter. “Update on Rankings of Conversion Efficiencies and Energy Yield of Micro-Inverters, Including Inverters for Two PV Modules.” <i>Proceedings of the 33rd European Photovoltaic Solar Energy Conference, Amsterdam, (Niederlande), 25.-29. Sept. 2017, S. 1477–1481</i>, 2017.","bibtex":"@inproceedings{Bendfeld_Krauter_2017, title={Update on rankings of conversion efficiencies and energy yield of micro-inverters, including inverters for two PV modules}, booktitle={Proceedings of the 33rd European Photovoltaic Solar Energy Conference, Amsterdam, (Niederlande), 25.-29. Sept. 2017, S. 1477–1481}, author={Bendfeld, Jörg and Krauter, Stefan}, year={2017} }","apa":"Bendfeld, J., &#38; Krauter, S. (2017). 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