摘要
对于电压源型非线性负荷,由于系统电抗和负荷电抗的影响,在使用并联型有源滤器进行谐波补偿时不仅会出现负荷谐波电流放大现象,而且影响并联型有源滤波器电流跟踪控制算法的稳定性。文章建立了基于LCL滤波器的并联型有源滤波器、系统电抗和负荷电抗的详细电路模型,并通过开环传递函数控制模型分析了电流跟踪控制算法的稳定性。最后通过比例谐振控制(PR)和仿真验证了该模型和解决方案的有效性。
When shunt active power filter based on LCL filter is used for voltage source type harmonic source, the line and load impedances will not only cause the harmonic amplification but also the stability problem based on current tracking. In this paper, a detailed circuit model based on voltage source type harmonic source, shunt active power filter based on LCL filter considering and line impedance was built. The stability problem caused by harmonic amplification based on open loop transfer function was analyzed according to this circuit model. PR controller was proposed to test this stability problem caused by harmonic amplification, and the simulation results confirmed the validity of the circuit model and the solution.
作者
任磊
云平平
REN Lei;YUN Pingping(School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China;Inner Mongolia University of Technology,Hohhot,Inner Mongolia 010051,China)
出处
《控制与信息技术》
2018年第5期7-11,共5页
CONTROL AND INFORMATION TECHNOLOGY
关键词
有源滤波器
电压源型非线性负载
LCL滤波器
系统电抗
控制算法
active power filter （APF）
voltage source type harmonic source
LCL filter
line impedance
control algorithm
