基于双闭环控制的三相三电平PWM整流器研究

基金项目:

天地科技股份有限公司研发项目（TZ-GY-2010-GX-1）

详细信息

Research of three-phase three-level PWM rectifier based on double closed-loop control

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。
- 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
Abstract: 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.
- three-level PWM rectifier /
- double closed-loop control /
- voltage loop /
- current loop /
- control of neutral-point voltage balance /
- PI regulatio