전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2015년도 추계학술대회 논문집
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- Pages.95-96
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- 2015
회생모드가 없는 단일전원 27레벨 캐스케이드 H-브리지 인버터
A Pre-Regulated Single-Sourced 27-level ACHB Inverter without Regeneration
- 모하나 순다 마노하란 (숭실대학교 전기공학과) ;
- 아쉬라프 아흐무드 (숭실대학교 전기공학과) ;
- 이춘구 (숭실대학교 전기공학과) ;
- 박종후 (숭실대학교 전기공학과)
- Manoharan, Mohana Sundar (Soongsil University) ;
- Ahmed, Ashraf (Soongsil University) ;
- Lee, Chun-Gu (Soongsil University) ;
- Park, Joung-Hu (Soongsil University)
- 발행 : 2015.11.27
초록
In this paper, a single-sourced PV PCS using the trinary asymmetric MLI with a single-ended pre-regulator is proposed. Trinary based asymmetric CHB inverters provide higher output levels for the same number of cells compared to other CHB inverters. However, there is an issue of regeneration with trinary asymmetric inverters and this complicates the system with requirement of bi-directional converters at the input. Modified commutation strategies have been used to remove the regeneration issue with compromise in THD. The single-ended pre-regulator provides the isolated dc-link voltage for the individual H-bridge cells with the advantage of having a single switch and magnetic component. This implementation increases the magnetic utilization of the inductor core and reduces the switching loss in the pre-regulator and also the reduced parts count contributes to the cost competiveness of the proposed PCS. The proposed PV PCS has been verified using simulation results in this paper.
키워드