Repetitive control of grid current based on parameter self-adapting
2014
When the fundamental frequency is shifting, it's hard for traditional repetitive controller to work at the resonant frequencies. In this paper, a novel self-adaptive repetitive controller is proposed to suppress the current harmonics. This controller can adjust the sampling times in the grid cycles based on a special self-adaptive control algorithm. Mathematical analysis, simulations and physical experiments have validated the effectiveness of the self-adaptive repetitive controller.
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