Secondary-Side Phase-Shift-Controlled ZVS DC/DC Converter With Wide Voltage Gain for High Input Voltage Applications
- 4 February 2013
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 28 (11), 5128-5139
- https://doi.org/10.1109/tpel.2013.2242490
Abstract
In this paper, a soft-switching dc/dc converter with secondary-side phase-shift control strategy is proposed to improve the conversion efficiency and minimize the primary switch voltage stress in the high input voltage applications. Zero-voltage-switching performance is achieved for both the primary- and secondary-side power devices in a wide load range to reduce the switching losses due to the secondary-side phase-shift control scheme. Furthermore, compared with the conventional phase-shift control mechanism, the circulating current at the freewheeling stage is effectively suppressed as well to minimize the conduction losses. Moreover, the voltage stress of the primary switches is only half of the input voltage by employing the improved three-level structure, which makes the low-voltage rated power devices available to improve the circuit performance. In addition, the converter can work in the buck, balance, and boost modes to achieve a relatively wide input voltage range, which is an expected advantage for the communication power system to minimize the electrolytic capacitors with an acceptable hold-up time. The operation principle is analyzed and experimental results of a 1-kW 100-kHz prototype are provided to verify the effectiveness and the advantages of the proposed converter.Keywords
This publication has 22 references indexed in Scilit:
- Coupled Input-Series and Output-Parallel Dual Interleaved Flyback Converter for High Input Voltage ApplicationIEEE Transactions on Power Electronics, 2008
- A novel prototype of soft-switching inverter-fed DC-DC converter with step-up high-frequency planer transformer secondary-side phase-shifted PWM rectifierPublished by Institution of Engineering and Technology (IET) ,2006
- A family of zero-voltage and zero-current-switching (ZVZCS) three-level DC-DC converters with secondary-assisted regenerative passive snubberIEEE Transactions on Circuits and Systems I: Regular Papers, 2005
- A Novel Zero-Voltage and Zero-Current-Switching Full-Bridge PWM ConverterIEEE Transactions on Power Electronics, 2005
- A Novel ZVS DC/DC Converter for High Power ApplicationsIEEE Transactions on Power Electronics, 2004
- Novel soft-commutation DC–DC power converter with high-frequency transformer secondary side phase-shifted PWM active rectifierIEE Proceedings - Electric Power Applications, 2004
- A zero-voltage and zero-current switching three-level DC/DC converterIEEE Transactions on Power Electronics, 2002
- Analysis, design, and experimental results of a 1-kW ZVS-FB-PWM converter employing magamp secondary-side controlIEEE Transactions on Industrial Electronics, 1998
- Zero-voltage and zero-current-switching full bridge PWM converter for high-power applicationsIEEE Transactions on Power Electronics, 1996
- An improved full-bridge zero-voltage-switched PWM converter using a saturable inductorIEEE Transactions on Power Electronics, 1993