M. Mao, Shi-Ting Weng, Fuyang Liu, Liuchen Chang, M. Ding, Hongbin Wu
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A novel PRD control method damping resonance in grid-connected three-phase SVPWM current source inverter
A novel control method based on the proportional resonant differential (PRD) control is proposed for the grid-connected current source inverter (CSI) used in the direct drive permanent magnet synchronous wind generation system. By the optimal design of the parameters of the PRD controller in two-phase stationary frame, the CSI system can realize zero steady-state error control and effectively damp the resonance caused by its output LC filter just by feeding back the grid-connected current. This not only greatly simplifies the controller design but also enhances the stability of the system. Simulation results show grid-connected CSI with this method has fast dynamic response and good steady-state performances.
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