Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2015.07a
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- Pages.323-324
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- 2015
Low Cost Single-Sourced Asymmetrical Cascaded H-Bridge Multilevel Inverter
저비용 단일전원 비대칭 Cascaded H-Bridge 멀티레벨 인버터
- Manoharan, Mohana Sundar (Soongsil University) ;
- Ahmed, Ashraf (Soongsil University) ;
- Lee, Chun-Gu (Soongsil University) ;
- Park, Jong-Hu (Soongsil University)
- 모하나 순다 마노하란 (숭실대학교) ;
- 아쉬라프 아메드 (숭실대학교) ;
- 이춘구 (숭실대학교) ;
- 박종후 (숭실대학교)
- Published : 2015.07.07
Abstract
Recently, asymmetrical cascaded H-bridge multilevel inverter started to be highlighted as an alternative for the symmetrical cascaded H-bridge. The topology has a small number of part count compared to the symmetrical with higher number of levels. However, it has a drawback of the modulation index limitation which is relatively higher than its symmetrical counterpart, which causes a necessity of an extra voltage pre-regulator. In this paper, the single-sourced pre-regulator is unified with an inner single switch DC/DC converter isolated by coupled inductor. It leads to cost and size reduction. The proposed topology is verified using simulation results.
Keywords