三相电压型PWM整流器的双闭环控制研究  

Research on double closed loop control of three-phase voltage source PWM rectifier

作　　者：赵振民[1] 王铮[1] Zhao Zhenmin;Wang Zheng(Heilongjiang University of science and technology,School of Electrical&Control Engineering,Harbin Heilongjiang,150022)

机构地区：[1]黑龙江科技大学电气与信息工程学院,黑龙江哈尔滨150022

出　　处：《电子测试》2022年第7期43-46,51,共5页Electronic Test

基　　金：哈尔滨市应用技术研究开发项目(2017RAXXJ016)。

摘　　要：传统三相PWM整流方式采用传统二极管或相控可控硅实现,但这种整流方式电压利用率低、损耗大,同时也会对电网引入大量谐波分量。因此建立三相电压型PWM整流器的数学模型,利用Park变换将静止坐标系转换为同步旋转坐标系,并对d、q轴分量进行电压前馈解耦,对解耦后的电压电流分量采用双闭环的控制策略。同时推导和分析了工程化典型Ⅱ型系统的电流内环PI参数设计,研究结果表明:采用典型Ⅱ型系统设计,直流侧输出电流的动态响应速度快、抗扰动能力强。然后利用仿真软件MATLAB进行原理性验证,比较不同类型系统设计的电流波形,验证了设计和分析的正确性。The traditional three-phase PWM rectification method uses traditional diodes or phase-controlled thyristors to achieve,but this rectification method has low voltage utilization and large losses,and it also introduces a large number of harmonic components to the power grid.Therefore,the mathematical model of the three-phase voltage-type PWM rectifier is established,the stationary coordinate system is converted into a synchronous rotating coordinate system by Park transformation,and the d and q axis components are voltage-forward decoupled,and the decoupled voltage and current components are double Closed-loop control strategy.At the same time,the PI parameter design of the current inner loop of the engineered typical typeⅡsystem is deduced and analyzed.The research results show that:adopting the typical typeⅡsystem design,the dynamic response speed of the output current on the DC side is fast and the anti-disturbance ability is strong.Then use the simulation software MATLAB to verify the principle,compare the current waveforms of different types of system designs,and verify the correctness of the design and analysis.

关 键 词：三相PWM整流器 解耦 双闭环 抗扰动能力 

分 类 号：TN784[电子电信—电路与系统]