单相PWM整流器电流解耦双闭环控制方法研究  

Research on dual close-loop control of single-phase PWM rectifier based on current decoupling

作　　者：张志文[1] 彭立英[1] 孙树波 张蕊[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]特变电工衡阳变压器有限公司,湖南衡阳421007

出　　处：《电源技术》2015年第11期2524-2526,2551,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(51477046);湖南省战略性新兴产业科技攻关项目(2014GKl037);国家电网公司重大专项(5216A014007V)

摘　　要：针对单相两电平PWM整流器,在分析其工作原理的基础上,通过坐标变换建立了旋转坐标系下的数学模型,提出了一种基于电流解耦的双闭环控制策略,并在Matlab/Simulink软件平台上搭建了系统的仿真模型。仿真结果表明:在不同的运行条件下,单相PWM整流器能够实现直流母线电压恒定和近似单位功率因数运行,且具有良好的静态特性和动态响应性能,从而验证了该控制方法的正确性与可行性。The working principle of single phase two-level PWM rectifiers was analyzed. The single-phase rectifier＇s mathematical model, which was established in the d-q frame via coordinate transformation, was made. A dual close-loop control based on current decoupling of this model was proposed. The simulation model of the system was built in Matlab/Simulink software platform. Simulation results show that single-phase PWM rectifier strategy can realize constant DC bus voltage and approximate unit power factor operation through this control strategy under different running conditions, and has a good static performance and dynamic response performance, which confirms the validity and feasibility of the control method.

关 键 词：PWM整流器 电流解耦 双闭环控制 坐标变换 

分 类 号：TM461[电气工程—电器]