中文摘要：

三相电流源型PWM整流器（Current Source Rectifier,CSR）是一种多变量、强耦合的非线性对象,这种复杂对象的控制较为困难。三相CSR通常都采用双级环路控制结构的直接电流控制方式,但常用的直接电流控制方式都存在一些问题,本文提出采用离散化状态反馈解耦控制器对该对象进行控制,可以解决其控制问题。文中分析了三相CSR数学模型及直接电流控制原理,讨论了离散化状态反馈解耦控制方法,搭建了这种控制方法的仿真模型,仿真结果说明了本文所提方法的优势,其控制效果要好于传统的PID控制方法。

英文摘要：

The three-phase current source PWM rectifier（ CSR） is a nonlinear object with multi-variability and strong coupling,so it is difficult to control the complex object. Three-phase CSR usually adopts the direct current control mode of dual-stage loop control structure,but there are some problems in the common direct current control method.In this paper,the discrete state feedback decoupling controller is used to control the object,which can solve the control problem. The mathematical model of three-phase CSR and the principle of direct current control are analyzed,the discrete-state feedback decoupling control method is discussed,as a result,the simulation model of the control method is established. The simulation results verify the advantages of the proposed method,and the control effect of the proposed method is better than that of the traditional PID control method.