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
- 2012.11
- 수록면
- 960 - 973 (14page)
이용수
초록· 키워드
오류제보하기
The winding loss analysis of a flyback transformer is difficult and ambiguous because the primary side current and the secondary side current differs both in shape and phase, especially for DCM (Discontinuous Conduction Mode) operation. Meanwhile, the fringing field caused by the air gaps further makes the traditional 1-D loss analysis model not directly applicable. The paper gives a thorough investigation into the phase shift of winding currents, which indicates that the phase shift of the high order harmonics is still close to 180º out-of-phase. Based on the analysis, a simplified 2-D winding loss analytical model for flyback transformers considering the effects of low order harmonics is proposed. By neglecting the y components of the fringing field, the proposed model has an acceptable accuracy and a simple form that is similar to the conventional 1-D model. The power loss calculated with the proposed analysis model is verified by FEA (Finite Element Analysis) simulations and experimental results.
목차
Abstract
NOMENCLATURE
Ⅰ. INTRODUCTION
Ⅱ. KEY FACTOR OF THE WINDING LOSS ANALYSISOF FLYBACK TRANSFORMERS
Ⅲ. SIMPLIFIED 2-D LOSS ANALYTICAL MODELFOR FLYBACK TRANSFORMERS
Ⅳ. SIMULATION VERIFICATION
Ⅴ. EXPERIMENTAL VERIFICATION
Ⅵ. CONCLUSION
APPENDIX
REFERENCES
참고문헌 (30)
참고문헌 신청
P.L. Dowell / 1966 / Effects of eddy currents in transformer windings / Proc. of the IEEE 113:1387~1394
M. P. Perry / 1979 / Multiple layer series connected winding design for minimum losses / IEEE Trans. Power Electron 98(1):116~123
A.M. Urling / 1989 / Characterizing high-frequency effects in transformerwindings-a guide to several significant articles / in Proc.IEEE. APEC :373~385
J. A. Ferreira / 1994 / Improved analytical modeling of conductive losses in magnetic components / IEEE Trans. Power Electron 9(1):127~131
X. Nan / 2003 / An Improved Calculation of Proximity-Effect Loss in High-Frequency Windings of Round Conductors / in Proc. IEEE PESC :853~860
M. P. Perry / 1979 / Multiple layer series connected winding design for minimum losses / IEEE Trans. Power Electron 98(1):116~123
A.M. Urling / 1989 / Characterizing high-frequency effects in transformerwindings-a guide to several significant articles / in Proc.IEEE. APEC :373~385
J. A. Ferreira / 1994 / Improved analytical modeling of conductive losses in magnetic components / IEEE Trans. Power Electron 9(1):127~131
X. Nan / 2003 / An Improved Calculation of Proximity-Effect Loss in High-Frequency Windings of Round Conductors / in Proc. IEEE PESC :853~860
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UCI(KEPA) : I410-ECN-0101-2014-560-000995693