Duplex two switch forward transformers linked soft-switching high frequency PWM DC-DC converter with tapped inductor filters

Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579) Pub Date : 2002-08-07 DOI:10.1109/PCC.2002.998531

S. Hamada, S. Moisseev, M. Nakaoka

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引用次数: 3

Abstract

This paper presents a novel circuit topology of a duplex two-switch forward transformer type zero-voltage and zero-current soft switching (ZVZCS) high frequency DC-DC power converter with PWM control scheme. Based on the conventional paralleled two-switch forward transformer link hard switching converter this circuit configuration does not include complex auxiliary resonant circuit except for an output side tapped-inductor smoothing filter. This new DC-DC converter has advantages as wide soft-switching operation range under broad load variations and PWM regulations, lowered level of the idle and circulating currents through circuit components, small ripple output voltage. The basic operating principle of the converter is illustrated by equivalent circuit for each mode with detailed explanation. Moreover, the feasible practical effectiveness of the proposed soft-switching DC-DC power converter realized on the 500 W 100 kHz breadboard setup is verified and evaluated on basis of simulation and experimental results.

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带抽头电感滤波器的双工双开关正激变压器连接软开关高频PWM DC-DC变换器

本文提出了一种基于PWM控制的双工双开关正激变压器型零电压零电流软开关(ZVZCS)高频DC-DC功率变换器的新颖电路拓扑。在传统并联双开关正激变压器链路硬开关变换器的基础上，除输出侧抽头电感平滑滤波器外，不包括复杂的辅助谐振电路。这种新型DC-DC变换器具有宽负载变化和PWM调节下的宽软开关工作范围、低电路元件的空闲和循环电流水平、小纹波输出电压等优点。用等效电路说明了变换器的基本工作原理，并对各模式进行了详细说明。此外，基于仿真和实验结果，验证了所提出的软开关DC-DC功率变换器在500w 100khz面包板上实现的可行性和实用有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)

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