A new buck-boost dc/dc converter of high efficiency by soft switching technique

2009 IEEE 6th International Power Electronics and Motion Control Conference Pub Date : 2009-05-17 DOI:10.1109/IPEMC.2009.5157585

D. Kwak, Seung-Ho Lee, Do-Young Jung

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引用次数: 13

Abstract

In this paper, we study on a new buck-boost dc/dc converter of high efficiency by soft switching technique. The switching devices in the proposed converter are operated by soft switching with a new partial resonant circuit. The partial resonant circuit is designed to replacement of an energy storage inductor and a snubber circuit used in a conventional buck-boost converter, and then the configuration of the proposed converter is simplified. The switching control technique of the converter is also simplified for the switches to drive in a constant switching frequency. The results are that the switching power loss is very low and system efficiency is high. In addition, the output voltage of the converter is regulated by PWM control technique, and the discontinuous current flowing into the resonant inductor of the converter makes to simplify control method and control components. In comparison with the conventional buck-boost dc/dc converter, some simulation results on computer and experimental results are confirmed the validity of analytical results of the proposed converter.

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基于软开关技术的新型高效降压dc/dc变换器

本文利用软开关技术研究了一种新型的高效降压型dc/dc变换器。该变换器的开关器件采用一种新的局部谐振电路软开关。设计了部分谐振电路，取代了传统降压-升压变换器中的储能电感和缓冲电路，并简化了该变换器的结构。简化了变换器的开关控制技术，使开关在恒定的开关频率下驱动。结果表明，开关功率损耗低，系统效率高。另外，采用PWM控制技术调节变换器的输出电压，使电流不连续流入变换器的谐振电感，简化了控制方法和控制元件。通过与传统的buck-boost型dc/dc变换器的比较，验证了该变换器分析结果的有效性。

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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2009 IEEE 6th International Power Electronics and Motion Control Conference

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