Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 1998.10a
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- Pages.264-269
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- 1998
Soft-Switching Buck-Boost Converter with High Power Factor for PAM Inverter System
- K. Taniguchi (Osaka Institute of Technology) ;
- T. Watanabe (Osaka Institute of Technology) ;
- T. Morizane (Osaka Institute of Technology) ;
- Kim, N. ura (Osaka Institute of Technology) ;
- Lee, Hyun-Woo (Kyungnam University)
- Published : 1998.10.01
Abstract
A proposed soft-switching buck-boost PWM converter has a lot of advantages, Viz., electric isolation, a high power factor, low switching losses, low EMI noise, reduction of the voltage and current stresses, etc. In a new PFC converter, the switching device is replaced by the loss-less snubber circuit to achieve the zero voltage switching (ZVS) at the maximum current. However, the charging current of the capacitor in the loss-less snubber circuit distorts the input current waveforms. To improve the input current waveform, a new duty factor control method is proposed in this paper.
Keywords