500V 250W全橋相移式升壓型軟性切換 DC-DC轉換器之設計及實作

The Design and Implementation of a 500V 250W Full Bridge Phase Shift Boost DC-DC Converter with Soft Switching

楊文賢(Wen-Shyan Yang)

指導教授 ： 何金滿

中原大學/工學院/電機工程研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400018

摘要

本文提出一種電流饋入(Current-Fed)式，升壓型軟性切換轉換器(Boost Converter with Soft Switching, BCSS)之研製。轉換器採用相移式全橋(Phase-Shifted Full-Bridge, PSFB)架構，使用UC3875作PWM控制器，利用相移後之信號時序(timing)，調變工作週期，使轉換器上臂開關工作在零電流切換(Zero Current Switch, ZCS)，下臂開關工作在零電壓切換(Zero Voltage Switch, ZVS)，以減低開關元件在導通或截止時的交換損失。

控制迴路是採用電壓負回授方式以獲得良好的電壓調節。轉換器換相時是利用變壓器雜散元件，即初級側之總漏感，和變壓器次級側反射到初級側的繞線電容組成共振電路作轉態。完成一個輸入為40 VDC~60 VDC，輸出為500 VDC/0.5 A相移式升壓型軟性切換轉換器的設計實例、並做模擬和實作之比較。

關鍵字

相移式軟性切換 ； 相移升壓型轉換器 ； 零電壓 ； 零電流

並列摘要

This paper presents the analysis, design, simulation and experimental results of a full bridge boosted phase shift DC-DC converter with soft switching, which is suitable for high-voltage and high-power application. This converter works in frequency of 40 kHz, with an output power of 250 W.
The converter utilizes transformer leakage inductance and winding capacitance to form a resonant circuit to achieve Zero-Current Switched (ZCS) for two upper switches, and Zero-Voltage Switched (ZVS) for two lower switches.
The simulation and real test are also conducted for discussion and comparison.

並列關鍵字

phase shift soft switching ； phase shift boost converter ； ZCS ； ZVS

參考文獻

[1] C. Iannello, S. Luo, I. Batarseh, “Full Bridge ZCS PWM Converter for High-Voltage High-Power Applications”, IEEE Trans. on AES, vol. 38, pp. 515-526, 2002.

[2] S.D. Johnson, A.F. Witulski, R.W. Erickson, ”Comparison of Resonant Topologies in High-Voltage DC Applications”, IEEE Trans. on AES, vol. 24, pp. 263-274, 1988.

[3] Christophe P. Basso, Switch-Mode Power Supply Spice Cookbook, McGraw-Hill Companies, 2001.

[4] Texas Instruments, Phase Shift Resonant Controller, Unitrode Products from Texas Instruments, pp. 3-363~3-372, 1999.

[7] D. Beatty,I. Batarseh, “Topical Overview of Soft-Switching PWM High Frequency Converters”, Southcon/95 Conference Record, pp. 47-52, 1995.