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권봉현(B. H. Kwon),김정하(J. H. Kim),나승호(S. H. Na),홍찬욱(C. O. Hong),이정표(J. P. Lee),박철현(C. H. Park),박의순(E. S. Park),김광민(K. M. Kim),윤홍민(H. M. Yun),이경주(K. J. Lee) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper focuses on the power circuit section of newly developed LSIS inverter for the variable torque application and presents the detailed explanation on the power circuits as well as its application-specific functional performance.
3-레벨 Hybrid ANPC 인버터의 양방향 운전 성능 분석
권봉현(Bong Hyun Kwon),김상훈(Sang-Hun Kim),배규철(Kyu-Chul Bae),이교범(Kyo-Beum Lee) 대한전기학회 2019 전기학회논문지 Vol.68 No.10
This paper analyzes the performance of a three-level hybrid active neutral-point clamped (ANPC) inverter in a bidirectional operation. In the bidirectional operation where electrical energy flows from dc source to ac grid and vice versa, a weakness of neutral-point-clamped (NPC) inverter is an unequal loss distribution between four silicon (Si) switching devices. A leg of the hybrid ANPC inverter consists of the four Si insulated gate bipolar transistors (IGBTs) and two silicon carbide (SiC) active switches. Only two SiC metal oxide semiconductor field effect transistors (MOSFETs) take all the switching events using redundant switching states but the switching losses are reduced compared to that of NPC inverter. The hybrid ANPC topology has an advantage of almost the same power loss operating as a grid-connected inverter and rectifier. The validity of the power loss analysis in the bidirectional operation is verified by a PSIM simulation model and experiment in the grid-connected three-phase three-level voltage source inverter.