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Rectifier Harmonic Suppression Based on Iterative Learning Control

LIU Hui-juan;YU Shao-juan;WANG Chen-bao;YANG Chen;MA Ya-yun;School of Electronic Information Engineering,Taiyuan University of Science and Technology;State Grid Kelan Power Supply Company;  
As the low power factor,serious current distortion and other issues to the grid side brought by traditional rectifier,the iterative learning control algorithm was put forward to be applied to PWM Rectifier,and the iterative learning controller was designed. Through the modeling and analysis of PWM rectifier,we can find that the uncertainty of equivalent resistance,frequency and other parameters of switching device will make the steady-state performance of control system poor. From the simulation results,we can find that the application of iterative learning control to PWM rectifier waveform control can improve the static behavior and reduce the input current harmonic distortion of AC side of rectifier effectively.
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