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Isolated Multi-level Inverter Using 3-Phase Transformers  

Kim, Tae-Jin (전기연구원 신재생에너지연구그룹)
Park, Sung-Jun (전남대 전기공학과)
Kim, Cheul-U (부산대 전자전기통신공학부)
Song, Sung-Geun (전남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.12, no.2, 2007 , pp. 139-148 More about this Journal
Abstract
In this paper, we proposed the isolated multi-level inverter using 3-phase transformers. It makes possible to use a single DC power source due to employing low frequency transformers. In this inverter, the number of transformer could be reduced comparing with an exiting 3-phase multi-level inverter using single phase transformer. Also, using phase angle control method with switching frequency equal to output fundamental frequency, harmonics component of output voltage and switching losses can be reduced. Finally, we made a prototype inverter to clarify the proposed electric circuit and reasonableness of control signal.
Keywords
H-Bridge; Multi-level inverter; 3-Phase transformer; CHML;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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