基于LCL滤波器的电压源型PWM整流器控制策略综述  

An Overview of Current Control Strategy for Three-Phase Voltage-Source Rectifier With LCL-Filter

作　　者：孙蔚[1] 伍小杰[1] 戴鹏[1] 周娟[1] 

机构地区：[1]中国矿业大学信电学院,徐州221008

出　　处：《电工技术学报》2008年第1期90-96,共7页Transactions of China Electrotechnical Society

摘　　要：三相电压源型PWM整流器交流侧每相通过LCL滤波器代替单电感滤波器接入电网,可以由较小的电感电容达到较好的滤波效果。但是电容支路的引入,将使传统的控制策略很难达到优良的控制效果。本文以三相电压源型PWM整流器为例给出了LCL滤波器的数学模型,并对基于LCL滤波器三相电压源型PWM整流器的直接功率控制、三闭环控制和无差拍控制的控制策略进行分析和比较。最后,展望了基于LCL滤波器的PWM整流器控制策略的研究热点和研究方向。The use of a LCL-filter mitigates the switching ripples injected in the grid by a third order low-pass LCL-filter is better than an L filter. But the added capacitance spur track makes the control of the rectifier much more complex. So the control strategy for voltage-source converter connected to the grid through an LCL-filter began to be researched. The mathematical model of the rectifier connected to grid with an LCL-filter is shown in this paper and then some control strategies are introduced, such as vector control, three closed loops control, novel direct power control and dead-beat control. At last, the advantages and disadvantages of all this control strategies are discussed in this paper and the prospect research focus are given.

关 键 词：LCL滤波器 电压源型PWM整流器 控制策略 

分 类 号：TM461[电气工程—电器]