대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 제38회 하계학술대회
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- Pages.1134-1135
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- 2007
3상 절연형 변압기를 이용한 다중레벨
Multi-level Inverter Using 3-Phase isolated Transformers
- Lee, Hwa-Chun (Chonnam National University) ;
- Song, Sung-Gun (Chonnam National University) ;
- Park, Sung-Jun (Chonnam National University) ;
- Kim, Kwang-Heon (Chonnam National University)
- 발행 : 2007.07.18
초록
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.
키워드