谐振型PWM有源钳位分析Ćuk DC/DC变换器

Shantanu Gupta, S. Mazumder
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引用次数: 0

摘要

本文介绍了谐振脉宽调制(PWM)有源钳位(PAC)-Ćuk dc/dc变换器的一种新型稳态建模技术。PAC-Ćuk dc/dc变换器配备了两个箝位电路,使所有开关的ZVS打开,从而使变换器高效运行。介绍了一种谐振形式的PAC-Ćuk dc/dc变换器,并利用建模技术研究了输出功率和串联电感电流与控制参数的关系。由于共振在分析中引入了很高的非线性,传统的稳态建模会产生错误的结果。因此,本文采用闭式LC谐振建模技术来分析谐振对PAC-Ćuk dc/dc变换器的影响。利用叠加和状态平面轨迹技术建立了共振模型。所开发的谐振建模技术为跨两个有源电压源连接的谐振LC链路提供了精确的解决方案,适用于其他谐振转换器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of Resonant PWM Active-clamp Ćuk DC/DC Converter
In this paper, a novel steady-state modeling technique is introduced for resonant pulse width modulation (PWM) active-clamp (PAC)-Ćuk dc/dc converters. The PAC-Ćuk dc/dc converter is equipped with two clamping circuits which enable ZVS turn-on of all the switches resulting in high-efficiency operation of the converter. A resonant form of PAC-Ćuk dc/dc converter is introduced and studied using the modeling technique to develop the output power and series inductor current dependency on the control parameters. As the resonance introduces high nonlinearity in the analysis, the traditional steady-state modeling generates erroneous results. Hence, a closed-form LC resonant modeling technique developed in this paper is used to analyze the impact of resonance on the PAC-Ćuk dc/dc converter. The resonant model is developed using the superimposition and state-plane trajectory technique. The developed resonant modeling technique delivers an exact solution for a resonant LC link connected across two active voltage sources which applies to other resonant converters.
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