지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.9
- 수록면
- 1,326 - 1,335 (10page)
이용수
초록· 키워드
오류제보하기
Common mode (CM) chokes are a crucial part in EMI filters for mitigating the electromagnetic interference (EMI) of switched-mode power supplies (SMPS) and for meeting electromagnetic compatibility standards. However, the parasitic capacitances of a CM choke deteriorate its high frequency filtering performance, which results in increases in the design cycle and cost of EMI filters. Therefore, this paper introduces a negative capacitance generated by a negative impedance converter (NIC) to cancel the influence of equivalent parallel capacitance (EPC). In this paper, based on a CM choke equivalent circuit, the EPCs of CM choke windings are accurately calculated by measuring their impedance. The negative capacitance is designed quantitatively and the EPC cancellation mechanisms are analyzed. The impedance of the CM choke in parallel with negative capacitances is tested and compared with the original CM choke using an impedance analyzer. Moreover, a CL type CM filter is added to a fabricated NIC prototype, and the insertion loss of the prototype is measured to verify the cancellation effect. The prototype is applied to a power converter to test the CM conducted noise. Both small signal and EMI measurement results show that the proposed technique can effectively cancel the EPCs and improve the CM filter"s high frequency filtering performance.
목차
Abstract
I. INTRODUCTION
II. EXTRACTION OF THE EPC FOR THE CM CHOKE
III. DESIGN OF THE NIC CIRCUIT
IV. EPC CANCELLATION FOR THE CM CHOKE
V. EMI NOISE MEASUREMENTS
VI. CONCLUSIONS
REFERENCES
참고문헌 (20)
참고문헌 신청
Y. B. Chu and S. Wang, “A generalized common-mode current cancellation approach for power converters,” IEEE Trans. Ind. Electron., Vol. 62, No. 7, pp. 4130-4140, Jul. 2015.
K. H. Lee, B. G. Kang, Y. Choi, and S. K. Chung, “Design and implementation of an active EMI filter,” J. Power Electron., Vol. 16, No.3, pp. 1236-1243, May 2016.
X. C, Huang, J. J. Feng, F. C. Lee, Q. Li, and Y. C. Yang, “Conducted EMI analysis and filter design for MHz active clamp flyback front-end converter,” Proc. IEEE APEC, pp. 1534-1540, 2016.
Y. Murata, K, Takahashi. T, Kanamoto, and M, Kubota, “Analysis of parasitic couplings in EMI filters and coupling reduction methods,” IEEE Trans. Electromagn. Compat, Vol. 59, No. 6, pp. 1880-1886, Dec. 2017.
C. K. Lee, D. T. Xu, B, H, pong, S. Kiratipongvoot, and W. Man, “A three-winding common mode inductor,” IEEE Trans. Ind. Electron., Vol. 32, No. 7, pp. 5180-5187, Jul. 2017.
K. H. Lee, B. G. Kang, Y. Choi, and S. K. Chung, “Design and implementation of an active EMI filter,” J. Power Electron., Vol. 16, No.3, pp. 1236-1243, May 2016.
X. C, Huang, J. J. Feng, F. C. Lee, Q. Li, and Y. C. Yang, “Conducted EMI analysis and filter design for MHz active clamp flyback front-end converter,” Proc. IEEE APEC, pp. 1534-1540, 2016.
Y. Murata, K, Takahashi. T, Kanamoto, and M, Kubota, “Analysis of parasitic couplings in EMI filters and coupling reduction methods,” IEEE Trans. Electromagn. Compat, Vol. 59, No. 6, pp. 1880-1886, Dec. 2017.
C. K. Lee, D. T. Xu, B, H, pong, S. Kiratipongvoot, and W. Man, “A three-winding common mode inductor,” IEEE Trans. Ind. Electron., Vol. 32, No. 7, pp. 5180-5187, Jul. 2017.
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