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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.5
- 수록면
- 634 - 643 (10page)
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초록· 키워드
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This paper presents a high frequency design approach for improving efficiency over a wide load range in the self-driven phase-shifted full-bridge converters for server power systems. In the proposed approach, a detailed ZVS analysis of the lagging leg switches in both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM) is presented. The optimum dead time and the determination of the appropriate operation mode are given for high efficiency according to the load conditions. Finally, the optimum operation conditions are defined to achieve a high-efficiency. A laboratory prototype operating at 80 kHz, rated 1 kW (12 V-83.3 A), is built to verify proposed theoretical analysis and evaluations. The experimental results show that the maximum efficiency is achieved as 95% and 83.5% at full load and 5% load conditions, respectively.
목차
Abstract
I. INTRODUCTION
II. ZVS ANALYSIS OF THE LAGGING LEG SWITCHES IN CCM AND DCM
III. DEAD TIME OPTIMIZATION AND APPROPRIATE MODE DETERMINATION
IV. EXPERIMENTAL RESULTS
V. CONCLUSION
REFERENCES
참고문헌 (20)
참고문헌 신청
1. [학술지(정기간행물)] - J. W. Kolar / 2008 / PWM converter power density barriers / IEEJ Trans. Ind. Appl. 128 (4) : 1 ~ 14
2. [학술지(정기간행물)] - C. Zhao / 2009 / Optimum design consideration and implementation of a novel synchronous rectified soft-switched phase-shift full-bridge converter for low-output-voltage high-output-current applications / IEEE Trans. Power Electron. 24 (2) : 388 ~ 397
3. [학술지(정기간행물)] - U. Badstuebner / 2011 / Optimization of a 5-kW telecom phase-shift DC–DC converter with magnetically integrated current doubler / IEEE Trans. Power Electron. 58 (10) : 4736 ~ 4745
4. [학술대회논문] - U. Badstuebner / 2010 / An optimized, 99 % efficient, 5kW, phase-shift PWM DC-DC converter for data centers and telecom applications / Proc. Applied Power Electronics Conference and Exposition (APEC) : 773 ~ 780
5. [학술지(정기간행물)] - J. W. Kim / 2014 / A simple switching control technique for improving light load efficiency in a phase-shifted full-bridge converter with a server power system / IEEE Trans. Power Electron. 29 (4) : 1562 ~ 1566
2. [학술지(정기간행물)] - C. Zhao / 2009 / Optimum design consideration and implementation of a novel synchronous rectified soft-switched phase-shift full-bridge converter for low-output-voltage high-output-current applications / IEEE Trans. Power Electron. 24 (2) : 388 ~ 397
3. [학술지(정기간행물)] - U. Badstuebner / 2011 / Optimization of a 5-kW telecom phase-shift DC–DC converter with magnetically integrated current doubler / IEEE Trans. Power Electron. 58 (10) : 4736 ~ 4745
4. [학술대회논문] - U. Badstuebner / 2010 / An optimized, 99 % efficient, 5kW, phase-shift PWM DC-DC converter for data centers and telecom applications / Proc. Applied Power Electronics Conference and Exposition (APEC) : 773 ~ 780
5. [학술지(정기간행물)] - J. W. Kim / 2014 / A simple switching control technique for improving light load efficiency in a phase-shifted full-bridge converter with a server power system / IEEE Trans. Power Electron. 29 (4) : 1562 ~ 1566
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