Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2001.10a
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- Pages.556-560
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- 2001
Improvement of Input Current Waveform for Soft-Switching Boost DCM Converter with Unity Power Factor
- Taniguchi K. (Osaka Institute of Technology) ;
- Watanabe T. (Osaka Institute of Technology) ;
- Morizane T. (Osaka Institute of Technology) ;
- Kimura N. (Osaka Institute of Technology) ;
- Lee Hyun-Woo (Kyungnam University)
- Published : 2001.10.01
Abstract
In this paper, a soft-switching discontinuous mode (DCM) power factor corrected (PFC) converter is analyzed by applying the double Fourier series expansion. It is found that the fundamental component and higher-order harmonics included in the input current waveform are obtained by the Fourier series expansion of the mean value of the inductor current. From the theoretical analysis, a new method removing the distortion of the input current waveform is proposed. In spite of an open loop system, the proposed method makes a great improvement of the total harmonic distortion even if the ratio of output voltage to input voltage is very low.
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