基于超级电容器与有源电力滤波器组合的电能质量治理装置及其控制研究

Research on Power Quality Control Device with Super Capacitor and Active Power Filter and Its Control

为了增加微电网中电能质量治理装置的利用率,利用超级电容储能系统与有源电力滤波器在主电路拓扑上的相似性以及功能上的互补性,提出了一种基于超级电容器与有源电力滤波器组合的电能质量治理装置。文章分析了该组合装置的结构特点和组合原理,提出了组合装置双向DC/DC模块、DC/AC模块的控制策略,给出了组合装置在功率调节和谐波治理两种工作模式下的切换逻辑。仿真结果表明,该组合装置能够根据需要分别表现为功率调节、无功补偿与谐波治理功能,验证了组合装置的合理性和有效性。

In order to increase the utilization rate of power quality control devices in micro-grid,a combined device based on super capacitor and active power filter was proposed by using the main circuit topological similarity and functional complementarity between super capacitor energy storage system and active power filter.This paper analyzes the structure characteristics and combination principle of the combined device,introduces the control strategies of bidirectional DC/DC module and DC/AC module of the combined device,and gives the switching logic of the combined device under two working modes of power regulation and harmonic control.The simulation results show that the device can perform the functions of power regulation,reactive compensation and harmonic control respectively according to the requirements,and verify the rationality and effectiveness of the combined device.