基于HAPF的光伏微电网谐波抑制研究

Study on harmonic suppression of photovoltaic microgrid based on HAPF

电力电子元件和非线性负载接入光伏微电网后,导致微电网谐波含量增大。文章在传统有源电力滤波器(APF)的并联支路上串联LC滤波电路,采用混合型有源电力滤波器(HAPF)对微电网谐波进行治理,并利用Matlab/simulation搭建了滤波器电路的仿真模型,分别对APF和HAPF进行分析,结果表明,HAPF具有更好的谐波补偿效果,降低了光伏微电网中谐波,满足并网及微电网运行要求。

In view of the problem that there are a lot of harmonics in the process of grid-connected photovoltaic microgrid, especially after adding non-linear loads, the harmonic content increases obviously. In this paper, its improvement based on the traditional active power filter(APF), The LC filter circuit is connected in a parallel branch circuit, The hybrid active power filter(HAPF) is adopted to control the harmonic of microgrid, and a simulation model of the filter circuit was built by using Matlab/simulation, the simulation and comparison of APF and HAPF were compared respectively,the results show that HAPF has better harmonic compensation effect, and the harmonic problem in photovoltaic microgrid has been significantly improved to meet the grid connection and microgrid operation, which has a certain reference value for the future harmonic control of photovoltaic microgrid.