基于平均电流控制的双闭环改进控制策略  

Improved Double Closed Loop Control Method Based on Average Current Mode Control

作　　者：陈亚爱[1] 薛颖[1] 周京华[1] 

机构地区：[1]北方工业大学机电学院电力电子与电气传动工程中心,北京100144

出　　处：《电机与控制应用》2013年第10期26-29,共4页Electric machines & control application

摘　　要：在分析三种基本控制方法的基础上,利用平均电流控制方式实现数字双闭环控制,提出一种改进控制策略,进一步减小了双闭环调节时电压环对电流环的影响。以功率因数控制器(PFC)电路为控制对象,在MATLAB/Simulink环境下建立数字控制系统仿真模型,详述了仿真模型中各模块的参数设定,并进行了仿真试验。仿真结果表明,功率因数达到0.999 4、系统的总谐波失真THD仅1.51%,验证了该控制理论的可行性。该改进控制策略亦可应用于电机控制,为相关试验研究及工程应用提供一定参考。The double closed loop control by utilizing average current mode control based on analyzing three basic control methods was achieved. It made voltage loop bring less influence to current loop in double closed loop control by means of presenting an improved control method. PFC was targeted to establish a digital control system simulation model in the environment of MATLAB / Simulink. The parameter setting of each module in the simulation model was described in detail,and the simulation experiment was proceeded. Simulation results showed that power factor reaches 0. 999 4 and the system total harmonic distortion（ THD） was only 1. 51%. The results verified the feasibility of the control theory. The improved control method could be also appied to motor control and then provide a reference for relevant experimental research and engineering applications.

关 键 词：双闭环控制 平均电流控制 数字控制 功率因数控制器 

分 类 号：TM301.2[电气工程—电机]