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Fuzzy-Immune-PID Control in a Three-Phase PWM Rectifier

LIAO Xiao-zhong1,2,XIAO Yan-lei1,2,LI Shuang1,2(1.Department of Automatic Control,School of Information Science and Technology,Beijing Institute of Technology,Beijing 100081,China;2.Key Laboratory of Complex System Intelligent Control and Decision of Ministry of Education,Beijing 100081,China)  
A fuzzy-immune-PID controller was designed based upon the principle of immune feedback control and fuzzy PID control with parameter self-tuning.The controller integrated fuzzy control,the rule of immune feedback control and PID control.The fuzzy-immune-PID controller was used in direct power control based on voltage orientation in 3-phase PWM rectifier to improve the performance of 3-phase PWM rectifier controlled by traditional PID controller.Test results showed that the fuzzy-immune-PID controller could achieve high power factor, low harmonic,good dynamic performance and possess better robust property to load-disturbance.
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