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논문 기본 정보

자료유형
학술대회자료
저자정보
Du-Hee Jang (국민대학교) Cheol-Hee Yoo (국민대학교) Dong-Sung Oh (삼성전자) Sung-Soo Hong (국민대학교) Sang-Kyoo Han (국민대학교)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2011-ECCE Asia
발행연도
2011.5
수록면
192 - 198 (7page)

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초록· 키워드

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The RMS (Root Mean Square) current reduction technique for the link capacitor of two-stage PFC (power factor correction) AC/DC converter is proposed. Although there exist various factors for optimizing the link capacitor, the RMS current stress is one of the most important factors to determine the capacitor size. To reduce the RMS current of the link capacitor, the main concept of the proposed method is by adding the small C-L-L-C filter around the link capacitor. Namely, the front C-L filter and rear L-C filter of proposed C-L-L-C filter can effectively reduce the RMS currents entering into and coming out of the link capacitor by filtering out the switching current components, respectively. Especially, since the crossover frequency of proposed filter is very far from that of the PFC converter, the proposed filter has hardly any effect on the dynamics of the AC/DC converter and thus, makes it easy to design the overall system controller. To confirm the validity of proposed filter, the theoretical analysis, design considerations, and experimental verification are presented.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. RMS CURRENT STRESS REDUCTION WITH C-L AND CL-L-C FILTER
Ⅲ. DESIGN CONSIDERATION
Ⅳ. EXPERIMENTAL RESULTS
Ⅴ. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

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