中文摘要：

为了提高LC滤波器的效果,减小滤波器的总电感值,在不改变LC滤波器滤波特性的基础上,提出了滤波效果更强的LLC谐振型滤波器。该谐振型滤波器是在LC滤波器的基础上,在电容支路上串联一个小电感,从而能更好地消除开关频率附近的高次谐波。最后,使用Matlab/Simulink仿真软件对LC、LCL和LLC滤波器进行仿真比较,比较结果证明了该方法的优越性。

英文摘要：

To improve the filtering effect of the LC filter and attenuate the total inductance value,the stronger filtering effect filter,LLC resonant filer is proposed without changing the LC filter characteristics.A small inductor is inserted in the loop of the capacitor in the traditional LC filter to preferably attenuate the high harmonics near the switch frequency.Finally,based on Matlab / Simulink,the simulations of LC,LCL and LLC are establishing.Compared with the LC and LCL,the result proves the superiority of the proposed method.