LCL滤波器在并联型有源电力滤波器中的设计

在满足相同的高频滤波效果的情况下,LCL滤波器所需的总电感值比L滤波器小,因此更适于在大功率、开关频率较低的电流源控制型并网设备上应用。然而针对该类型滤波器的参数设计不仅关系到开关频率处纹波抑制效果,同时也会影响电流控制器的性能。随着高频谐波抑制效果明显的LCL滤波器在并联型有源滤波器中应用,基于谐波电流跟踪控制器的LCL参数设计需要进一步研究,因此文中基于并联型有源电力滤波器给出一套LCL滤波器设计方法,并通过仿真验证该LCL滤波器的有源电力滤波器的有效性。

Design and Research on Shunt Active Power Filter with LCL Filter

Because LCL filter needs smaller inductance value comparing to L type filter at the same performance in harmonic suppression,it is gradually used in high-power and low-frequency current-source-controlled grid-connected converters.However,design work of LCL filter parameter not only relates to switch frequency ripple attenuation,but also impacts on performance of current controller.As the LCL filter with significant high frequency harmonic suppression effect used in shunt active power filter,further research based on LCL filter in shunt active power filter is needed.The parameter design method of LCL filter is given in the paper,and this design method is verified by simulation based on MATALAB.