Abstract
Three-phase PWM rectifier is a strong non-linear, timevarying uncertain system, the use of traditional linear control method is difficult to achieve the desired control effect due to its poor dynamic performance and complex parameter design. In this paper, the three-phase PWM rectifier model is used as the controlled object, and the fractional order PID control system is realized by the optimal Oustaloup numerical algorithm. The fractional PID parameters are optimized. The simulation results show that the fractional order PID control system has better control quality and stronger robustness. Besides, it also satisfies the requirement of fast dynamic response and has practical application value.
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