摘要
本文针对传统PWM整流器直接功率控制中PWM整流器的非线性特性,PI控制器的滞后性及其比例积分系数对系统参数的敏感性这些缺点,根据三相电压型PWM整流器在d-q两相同步旋转坐标下的数学模型,结合滑模变结构控制对系统参数摄动不敏感与整流器直接功率控制动态响应快的优点,提出了一种基于PWM整流器功率控制数学模型的滑模变结构控制算法。MATLAB/SIMULINK下的仿真结果表明,滑模算法具有更好的动态响应以及抗干扰性。
This paper proposes a new sliding-mode control method which is based on synchronous rotating reference frame mathematical model of the PWM rectifier in order to improve the lag of PI regulator and the sensitiveness of its proportional and integral gains to system parameters in traditional direct power control （DPC） method. Compared with the old method, the new one has the advantage of non-sensitiveness to the system parameters and quick dynamic response to the direct power control of the rectifier. The simulation results under MATLAB/SIMULINK verified the accuracy of the sliding-mode control method.
出处
《自动化技术与应用》
2010年第4期81-84,共4页
Techniques of Automation and Applications
关键词
PWM整流器
滑模控制
仿真
PWM rectifier
sliding-mode control
simulation
