基于准比例谐振的光伏微电网谐波控制方法

A Novel Harmonic Control Method of Photovoltaic Microgrid Based on Quasi-proportional Resonance

随着电力电子技术的发展,光伏微电网技术得到快速发展,但非线性负荷等引起谐波对电能质量的影响受到广泛关注。利用电力有源滤波原理,引入准比例谐振控制方法并进行优化,应用于LCL滤波输出的光伏微电网。仿真结果表明:提出的方法能够有效抑制谐波,提高电能质量和稳定系统,可实现对系统电能输出需求的快速响应。

With the development of power electronics,the technology of PV microgrid has been explored rapidly.However,the influence of harmonic on power quality caused by nonlinear load has been widely concerned.In this paper,the quasi-proportional resonance control method is introduced and optimized based on the principle of active power filter,which is applied to the photovoltaic micro grid with LCL filter output.The simulation results show that the proposed method can effectively suppress harmonics,improve the power quality,stabilize the system and realize the rapid response to the demand of power output of the system.