{"citation":{"apa":"Urbaneck, D., Rehlaender, P., Böcker, J., &#38; Schafmeister, F. (2021). LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs. <i>2021 IEEE Applied Power Electronics Conference and Exposition (APEC)</i>. Applied Power Electronics Conference (APEC), Arizona.","mla":"Urbaneck, Daniel, et al. “LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 KW DC-DC Converter for EVs.” <i>2021 IEEE Applied Power Electronics Conference and Exposition (APEC)</i>, 2021.","ama":"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: <i>2021 IEEE Applied Power Electronics Conference and Exposition (APEC)</i>. ; 2021.","ieee":"D. Urbaneck, P. Rehlaender, J. Böcker, and F. Schafmeister, “LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs,” presented at the Applied Power Electronics Conference (APEC), Arizona, 2021.","short":"D. Urbaneck, P. Rehlaender, J. Böcker, F. Schafmeister, in: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), 2021.","chicago":"Urbaneck, Daniel, Philipp Rehlaender, Joachim Böcker, and Frank Schafmeister. “LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 KW DC-DC Converter for EVs.” In <i>2021 IEEE Applied Power Electronics Conference and Exposition (APEC)</i>, 2021.","bibtex":"@inproceedings{Urbaneck_Rehlaender_Böcker_Schafmeister_2021, title={LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs}, booktitle={2021 IEEE Applied Power Electronics Conference and Exposition (APEC)}, author={Urbaneck, Daniel and Rehlaender, Philipp and Böcker, Joachim and Schafmeister, Frank}, year={2021} }"},"user_id":"60223","date_created":"2022-02-18T09:36:01Z","department":[{"_id":"52"}],"_id":"29871","title":"LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 kW DC-DC Converter for EVs","abstract":[{"lang":"eng","text":"LLC resonant converters typically employ power\r\nMOSFETs in their inverter stage. The generally weak reverse\r\nrecovery behaviour of the intrinsic body diodes of those\r\nMOSFETs causes significant turn-on losses when being forced\r\nto hard commutations. Continuous operation in this way will\r\nlead to self-destruction of the transistors. Consequently,\r\nzero-voltage switching (ZVS) is essential in a MOSFET-based\r\ninverter stage. To ensure ZVS, the LLC converter is operated in\r\nthe inductive region. On the contrary, IGBTs show dominant\r\nturn-off losses and are therefore conventionally not applied in\r\nLLC converters typically requiring high switching frequencies\r\nto achieve low output voltages. However, if the LLC converter\r\nis intentionally designed for capacitive operation, zero-current\r\nswitching (ZCS) is enabled and thus robust and cost-efficient\r\nIGBTs can be applied in the inverter stage. The aim of this work\r\nis to investigate the use IGBTs in the inverter of an LLC\r\nconverter. The theory behind the capacitive operated LLC is\r\nderived using a switched simulation model and compared with\r\nthe fundamental harmonic approximation (FHA). The results\r\nprove FHA to be useless for practical converter design. Instead,\r\na stress value analysis based on switched model simulations is\r\nproposed to the design a capacitive operated LLC utilizing ZCS.\r\nA 2 kW prototype for on-board EV applications was built to\r\nverify the theory and design approach. The prototype confirms\r\nthe derived theory and thus the deployment of IGBTs in the\r\ninverter stage of LLC resonant converters. Synchronous\r\nrectification turns out to require a specific control solution, but\r\nif given the resulting efficiency in the most critical operation\r\npoint exceeds the value of a MOSFET-based (inductive\r\noperated) LLC-design of an identical application. Therefore,\r\nthis concept should be further developed."}],"author":[{"full_name":"Urbaneck, Daniel","last_name":"Urbaneck","id":"60223","first_name":"Daniel"},{"first_name":"Philipp","full_name":"Rehlaender, Philipp","id":"69469","last_name":"Rehlaender"},{"first_name":"Joachim","orcid":"0000-0002-8480-7295","id":"66","last_name":"Böcker","full_name":"Böcker, Joachim"},{"first_name":"Frank","full_name":"Schafmeister, Frank","id":"71291","last_name":"Schafmeister"}],"has_accepted_license":"1","status":"public","year":"2021","conference":{"start_date":"2021-06-14","end_date":"2021-06-17","location":"Arizona","name":"Applied Power Electronics Conference (APEC)"},"publication":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","type":"conference","date_updated":"2022-02-23T16:12:38Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9487109"}],"ddc":["620"]}