摘要
针对三相三电平PWM整流器具有输出谐波少、电流畸变率小、适合向高压和大容量方向发展的特点,提出了一种基于双闭环控制的三相三电平PWM整流器的设计方案;分析了该整流器主电路原理及其数学模型的建立,详细介绍了电压外环和电流内环双闭环控制策略、中点电压平衡控制策略的实现。Matlab/Simulink仿真结果表明,该整流器具有良好的动态和稳态性能。
In view of characteristics of less output harmonics,low distortion rate of current and suitable for development of high-voltage and large capacity,the paper proposed a design scheme of three-phase three-level PWM rectifier based on double closed-loop control.It analyzed principle of main circuit and building of mathematical model of the rectifier,introduced implementation of control strategies of double closed-loop with voltage loop and current loop and neutral-point voltage balance in details.The simulation result of Matlab/Simulink shows that the rectifier has good dynamic and stable performances.
出处
《工矿自动化》
北大核心
2013年第8期72-75,共4页
Journal Of Mine Automation
基金
天地科技股份有限公司研发项目(TZ-GY-2010-GX-1)
关键词
三电平PWM整流器
双闭环控制
电压环
电流环
中点电压平衡控制
PI调节
three-level PWM rectifier
double closed-loop control
voltage loop
current loop
control of neutral-point voltage balance
PI regulation
