Energy based closed form solution of ZCS multiresonant series-parallel converters for optimum design

Proceedings of IEEE Power Electronics Specialist Conference - PESC '93 Pub Date : 1993-06-20 DOI:10.1109/PESC.1993.472003

S. Farhangi, U. Kirchenberger, D. Schroeder

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引用次数: 2

Abstract

Under-resonant operation of an ideal multiresonant series-parallel power converter (MRSPC) with a capacitive output filter is modeled. This operation allows zero current switching (ZCS), which is convenient for bipolar devices. The capacitive output filtering reduces the recovery effect of the rectifier diodes and is suitable for high output voltage applications. A closed form solution is found for this converter, based on state space analysis using energy concepts. This approach simplifies the mathematical operations, and gives better physical insight into the system variables. Based on the model, the steady-state characteristics of this converter are derived by a simulation program. They are discussed and compared with those of the series resonant half-bridge power converter (SRHC). The optimum converter parameters are found for given design requirements using computerized optimization routines. Several design examples are presented and compared with SRHC. The validity of the model is verified by SPICE simulations.<>

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基于能量的ZCS多谐振串并联变换器优化设计闭合解

建立了带电容输出滤波器的理想多谐振串并联功率变换器(MRSPC)的欠谐振工作模型。该操作允许零电流开关(ZCS)，这是方便的双极器件。电容输出滤波降低了整流二极管的恢复效应，适用于高输出电压应用。基于能量概念的状态空间分析，找到了该变换器的封闭解。这种方法简化了数学运算，并对系统变量提供了更好的物理洞察。在此基础上，通过仿真程序推导了该变换器的稳态特性。并与串联谐振半桥功率变换器进行了比较。根据给定的设计要求，利用计算机优化程序找到了最优的变流器参数。给出了几个设计实例，并与SRHC进行了比较。通过SPICE仿真验证了该模型的有效性。

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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Proceedings of IEEE Power Electronics Specialist Conference - PESC '93

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