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Full bridge ZCS PWM converter for high-voltage high-powerapplications

机译：全桥ZCS PWM转换器，用于高压大功率应用

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摘要

This paper presents a comprehensive study of a full bridge (FB) zero-current switched (ZCS) PWM converter which is suitable for high-voltage and high-power DC application that achieves ZCS for all active switches, and zero-voltage-switched (ZVS) operation for all diodes on the high voltage side. The given converter utilizes component parasitic parameters, particularly for the high-voltage transformer, and employs fixed-frequency phase-shift control to implement soft-switching commutations. Detailed steady state analysis of the converter power stage is presented for the first time and the major features of the converter's power stage are discussed. Small-signal characteristics are also presented and accompanied by a discussion of the controller design and implementation. A design example is also presented based on the steady state analysis and is validated by simulation. Theoretical and simulated results are in good agreement
机译：本文对全桥（FB）零电流开关（ZCS）PWM转换器进行了全面的研究，该转换器适用于高压和大功率DC应用，该应用可实现所有有源开关的ZCS和零电压开关（ ZVS）操作，用于高压侧的所有二极管。给定的转换器利用了组件寄生参数，尤其是高压变压器的寄生参数，并采用了固定频率的相移控制来实现软开关换向。首次介绍了转换器功率级的详细稳态分析，并讨论了转换器功率级的主要特征。还介绍了小信号特性，并伴随着控制器设计和实现的讨论。还给出了基于稳态分析的设计实例，并通过仿真进行了验证。理论和模拟结果吻合良好

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