대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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- Pages.1383-1386
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- 2005
Characteristics of Non-Isolated OSAKA Converter -Characteristics of Three-Phase Soft-Switching Power Factor Corrected Converter for Large Scale Power Without Three-Phase Transformer-
- Taniguchi, Katsunori (Osaka Institute of Technology) ;
- Shimomori, Wataru (Osaka Institute of Technology) ;
- Lee, Hyun-Woo (Kyungnam University)
- 발행 : 2005.07.18
초록
Non-isolated OSAKA Converter, which removes a three-phase transformer, is described in this paper. The converter switches once in every half cycle of an AC commercial power source. Therefore, it can solve many problems caused by the high frequency operation. The proposed converter achieves the soft-switching operation and the EMI noise can be reduced. In this circuit, the resonant capacitor, which is used for the soft-switching operation, is utilized for the improvement of an input current waveform. To achieve low cost and compact structure, non-isolated OSAKA converter removes a three-phase transformer of the OSAKA converter. By removing the three-phase transformer, three phase currents occur the interferences each other. To avoid the interference, a new switching method for non-isolated OSAKA converter is preposed. The converter can be constructed by the low-speed large power devices. The converter generates the low distorted input current waveforms with high power factor.