中文摘要：

滤波器的设计对于逆变器并网电流的电能质量至关重要,对此提出一种基于新型调制算法下滤波器的设计。介绍了一种新型变载波调制算法,然后依据变载波频率调制算法下的谐波频谱分布及谐波频谱与谐振频率之间的关系,得出LCL型滤波器的谐振频率及相关滤波器参数。最后通过样机试验验证了该调制算法下设计的LCL型滤波器实际性能更加优越。

英文摘要：

The filter design is vital for inverter power quality of grid current, so the inverter based on a new type modulation is presented.Firsfly,a new variable carrier frequency modulation algorithm is introduced.Then based on variable carrier frequency modulation algorithm of harmonic spectrum distribution and according to the harmonic spectrum and the relationship between the resonant frequency, it is concluded the resonance frequency of the LCL filter and filter parameters.Finally, experimental test shows that this method is more superior than design of the LCL filter.