基于模糊PI控制的PWM整流器设计

Design of PWM rectifier based on fuzzy PI controller

针对双闭环矢量控制的三相电压型PWM整流器难以用准确的数学模型描述、以及通过其简化的数学模型求得的PI参数需要实验整定的问题,提出了基于模糊PI控制器的新型智能化控制方法。与传统的PI控制方法相比,该方法不仅实现了PI参数的自整定,还使系统具有更好的响应性能、更高的稳定性及鲁棒性。利用Matlab/Simulink工具箱建立了基于模糊PI控制器的整流器仿真模型,并通过仿真实例对此设计方法进行了实验验证。

An effective control method for three-phase voltage source PWM rectifier based on fuzzy controller was proposed to solve the problem, which PI parameters obtained by some simple mathematical model of the PWM Rectifier were uncoordinated to achieve a good system response performance. Compared with conventional PI control method, PI parameters could be automatically changed and the system was made better in response performance and in stability and robustness ability. Finally, a simulation model of the rectifier was built by the Matlab / Simulink toolbox to prove the reasonable of the above design method.