Research on VIENNA Rectifier Based on FPID Controller Optimized by GA Algorithm

There are many shortcomings in traditional PID controller, such as the slow dynamic response and the poor robustness. Based on VIENNA rectifier, this paper analyses the performance of fractional-order PID controller. Under the balanced three-phase input situation, we decoupled the VIENNA rectifier and established the mathematic model. According to the theory of fractional calculus, we optimized the parameters of FPID by genetic algorithm (GA) to improve the performance of dynamic response and the robustness, aiming at the IEAT index. We constructed the VIENNA model by Simulink, verified the good performance of FPID, designed a 2 kW VIENNA rectifier, and confirmed the effectiveness of FPID controller by experiment.