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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.7
- 수록면
- 934 - 943 (10page)
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초록· 키워드
오류제보하기
A current balance problem exists in multi-phase LLC converters due to the resonant parameter tolerance. This paper presents a current balancing method for interleaved three-phase half bridge LLC converters. This method regulates the phase shift angle of the driving signals between the three phases based on a converter with a floating Y-connection. The floating midpoint voltage has different influences on each phase current and makes the three-phase current balance performance better than midpoint non-floating systems. Phase shift control between modules can further regulate the midpoint voltage. Then three phase current sharing is realized without adding extra components. The current distributions in a midpoint non-floating system and a midpoint floating system are compared. Then the principle and implementation of the proposed control strategy are analyzed in detail. A 3kW prototype is built to verify the validity and feasibility of the proposed method.
목차
Abstract
I. INTRODUCTION
II. CALCULATION OF MIDPOINT VOLTAGE WITH Y-CONNECTION TRANSFORMERS
III. OPTIMAL PHASE SHIFT CONTROL METHOD OF THE MIDPOINT VOLTAGE CONTROLLABLE PART
IV. EXPERIMENTAL VERIFICATION
V. CONCLUSIONS
REFERENCES
참고문헌 (25)
참고문헌 신청
B. Yang, F. C. Lee, A. J. Zhang, and G. Huang, “LLC resonant converter for front end DC/DC conversion,” in Proc. 17th Annu. IEEE Appl. Power Electron. Conf. Expo. (APEC), pp. 1108-1112, 2002.
B. Lu, W. Liu, Y. Liang, F. C. Lee, and J. D. van Wyk, “Optimal design methodology for LLC resonant converter,” in Proc. IEEE . Appl. Power Electron. Conf., pp. 533-538, 2006.
J. Y. Lee, Y. S. Jeong, and B. M. Han, “An isolated DC/DC converter using high-frequency unregulated llc resonant converter for fuel cell applications,” IEEE Trans. Ind. Electron., Vol. 58, No. 7, pp. 2926-2934, Jul. 2011.
M. Kim, “Two-phase interleaved LLC resonant converter with phase shedding control,” in Proc. Int. Power Electron. Conf., pp. 164-?1645, 2010.
B.-R. Lin, W.-R. Yang, J.-J. Chen, C.-L. Huang, and M.-H. Yu, “Interleaved LLC series converter with output voltage doubler,” in Proc. Int. Power Electron. Conf., pp. 92-98, 2010.
B. Lu, W. Liu, Y. Liang, F. C. Lee, and J. D. van Wyk, “Optimal design methodology for LLC resonant converter,” in Proc. IEEE . Appl. Power Electron. Conf., pp. 533-538, 2006.
J. Y. Lee, Y. S. Jeong, and B. M. Han, “An isolated DC/DC converter using high-frequency unregulated llc resonant converter for fuel cell applications,” IEEE Trans. Ind. Electron., Vol. 58, No. 7, pp. 2926-2934, Jul. 2011.
M. Kim, “Two-phase interleaved LLC resonant converter with phase shedding control,” in Proc. Int. Power Electron. Conf., pp. 164-?1645, 2010.
B.-R. Lin, W.-R. Yang, J.-J. Chen, C.-L. Huang, and M.-H. Yu, “Interleaved LLC series converter with output voltage doubler,” in Proc. Int. Power Electron. Conf., pp. 92-98, 2010.
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