摘要
传统PWM整流器的线性和非线性控制往往依据系统的数学模型,而考虑到实际系统运行时的各种因素,建立PWM整流器的精确数学模型是不可能的。以二极管嵌位式三电平PWM整流器为研究对象,设计了一种不需要被控对象数学模型的模糊自适应PI控制器,对控制器参数在线进行调整,以提高系统的动、静态性能。在Matlab/Simulink仿真环境下,搭建了三电平PWM整流器控制系统,并对仿真结果进行了深入分析,验证了控制策略的正确性和可行性。
The linear and nonlinear control of traditional PWM rectifier is often based on systematic mathematical model,and it is impossible to establish accurate mathematical model of PWM rectifier based on the actual system operation.This paper designs a fuzzy adaptive PI controller without the mathematical model of controlled subject,which adjusts the controller parameters online in order to improve the dynamic and static performance of the system.In Matlab/Simulink environment,the three-level PWM rectifier control system is constructed and the simulation results are studied,which verifies the correctness and feasibility of the control strategy.
出处
《电力与能源》
2016年第3期330-334,共5页
Power & Energy
