具主動箝位零電壓切換之升壓轉換器

Boost Converter with Zero Voltage Switching Based on Active Clamping

曾培景(Pei-Jing Tzang)

指導教授 ： 胡國英

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2009年)

摘要

本論文提出一種具主動箝位零電壓切換之升壓電力轉換器，其輔助電路分別採用了少量主動元件以及被動元件，使得主開關及輔助開關具有在零電壓下導通之特性，降低其切換損失及電磁干擾問題，藉此提高電路整體效率及可靠度。於本論文中，將針對所提架構分析其工作原理，並推導其相關數學式，最後依據所訂之系統規格選配合理的元件，設計出一台輸入為24V且輸出為42V/2.38A之直流-直流昇壓轉換器。

關鍵字

零電壓切換 ； 零電流切換 ； 主動箝位 ； 升壓式轉換器 ； 直流-直流轉換器

並列摘要

A boost converter with zero voltage switching (ZVS) based on voltage clamping is presented herein. With one auxiliary circuit containing a few active and passive devices, the main and auxiliary switches conduct with zero voltage during the turn-on period, so as to reduce the switching loss and electromagnetic interference and hence to upgrade the efficiency and stability of the overall system. first of all, basic operating principles, together with mathematical derivation, are described, and secondly some simulated and experimental results, based on given specifications for one DC-DC converter with 24V input and 42V/100W output, are provided to verify the proposed topology.

並列關鍵字

ZVS ； ZCS ； Active-Clamping ； boost Converter ； DC-DC Converter

參考文獻

[1] 唐碩甫，零電壓柔性切換半橋式DC/DC電力轉換器之分析研製與控制器設 計，碩士論文，國立成功大學工程科學系，2004。

[5] F. C. Lee, “High-frequency quasi-resonant converter technologies, ”IEEE PESC’88, vol. 76, no. 4, pp. 377-390, 1988.

[6] M. M. Jovanovic and F. C. Lee, “DC characteristics and stability of push-pull and bridge-type zero-current-switched quasi-resonanat converter,” IEEE Trans. Power Electron., vol. 4, no. 3, pp. 339-347, 1989.

[7] W. A. Tabisz and F. C. Lee, “Zero-voltage-switching multi-resonanat technique a novel approach to improre performance of high-frequency quasi-resonant converter,” IEEE Trans. Power Electron., vol. 4, no. 4, pp. 450-458, 1989.

[8] R. J. Wai, C. Y. Lin, L. W. Liu and R. Y. Duan, “Voltage-clamped forward quasi-resonant converter with soft switching and reduced switch stress,” IEE Proc. Electr. Power Appl., vol. 152, no. 3 pp. 558-564, 2005.