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Analysis of series-parallel resonant converter

机译:串并联谐振变换器的分析

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A frequency-domain steady-state analysis is given for a series-parallel resonant converter (SPRC) operating in the continuous conduction mode (CCM) using Fourier series techniques. Equations for performance parameters are derived under steady-state conditions to provide simple design tools. The topology of the SPRC combines the advantageous properties of both the series resonant converter (SRC) and the parallel resonant converter (PRC). The key results of the work are: a novel half-wave rectifier SPRC, conditions for obtaining high part-load efficiency; and several boundary frequencies and limiting conditions such as the capacitive/inductive load boundary and open-circuit and short-circuit cases. Experimental results measured for an 80-W converter above the resonance at different load resistances and input voltages show excellent agreement with the theoretical performance predicted by the equations.
机译:使用傅里叶级数技术,对以连续导通模式(CCM)工作的串并联谐振转换器(SPRC)进行了频域稳态分析。性能参数的方程式是在稳态条件下得出的,以提供简单的设计工具。 SPRC的拓扑结合了串联谐振转换器(SRC)和并联谐振转换器(PRC)的优点。这项工作的主要成果是:新型半波整流器SPRC,获得高部分负载效率的条件;以及几个边界频率和限制条件,例如电容/电感负载边界以及开路和短路情况。在不同负载电阻和输入电压下,在谐振以上的80W转换器测量的实验结果表明,与方程预测的理论性能非常吻合。

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