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LLC parallel resonant converter design by scaling the LC converter

机译:通过缩放LC转换器来进行LLC并联谐振转换器设计

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摘要

An efficient and practical method for steady-state design of an LLC-type parallel resonant dc/dc converter (LLC-PRC) is presented. In general, the output characteristic curves of LLC-PRC can be obtained by multiplying the output curves of the LC-type parallel resonant converter (LC-PRC) by a ratio of the parallel and series inductances. The peak voltage and current stresses on the resonant elements also depend on the same ratio. The LLC-PRC with a filter inductor is examined for two conduction modes, continuous and discontinuous capacitor voltage conduction modes, to show the effect of the inductance ratio. A means to use the derived equations to obtain the zero current switching (ZCS) is given. Also, a design procedure, along with design examples, is given to illustrate the use of the equations and characteristic curves. An experimental LLC-PRC is built to ensure the validity of the equations and design examples.
机译:提出了一种有效,实用的LLC型并联谐振DC / DC转换器(LLC-PRC)稳态设计方法。通常,LLC-PRC的输出特性曲线可以通过将LC型并联谐振转换器(LC-PRC)的输出曲线乘以并联电感和串联电感之比得到。谐振元件上的峰值电压和电流应力也取决于相同的比率。检查带有滤波电感器的LLC-PRC的两种传导模式,连续和不连续电容器电压传导模式,以显示电感比的影响。给出了一种使用导出的方程式来获得零电流开关(ZCS)的方法。此外,给出了设计过程以及设计示例,以说明方程式和特性曲线的使用。建立了实验性LLC-PRC以确保方程式和设计示例的有效性。

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