中文摘要：

LLCC谐振滤波器在高频正弦波逆变器中得到了一定应用，但在实际工程应用中滤波器的参数设计一直没有得到充分的研究。提出一种LLCC谐振滤波器在高频正弦波逆变器中的参数优化设计方法，针对移相全桥LLCC谐振变换器拓扑，通过建立功率器件的损耗模型和Matlab优化求解，得到了以功率损耗最小为优化目标，以总谐波畸变率（THD）为约束条件的LLCC谐振滤波器优化参数。最后研制了一台输出40kHz、10kW的电源样机，并进行实验验证。所提LLCC参数优化设计方法对于高频正弦波逆变器的参数设计具有一定的理论指导意义。

英文摘要：

LLCC resonant converter has been widely used in high frequency sinusoidal inverter,but its parameters design in practical engineering applications has not been fully studied.The paper designs a high frequency sinusoidal inverter based on the phase-shift full bridge LLCC series-parallel resonant circuit topology,aiming at the smallest loss of the inverter with the constraint condition of a certain rate of THD(total harmonic distortion).The loss model of the components is built and the optimization operation is achieved in Matlab.A systematic optimization procedure is proposed in the paper.The analysis and the optimized results are verified by experiments.The proposed optimization procedure is an effective way to design high frequency sinusoidal inverter.