Multirate Perfect Tracking Control of Single-phase Inverter with Inter Sampling for Arbitrary Waveform

In this paper, multirate perfect tracking control is proposed for a single-phase inverter. Although conventional single-rate deadbeat control could not guarantee zero tracking error for arbitrary reference signals, the proposed multirate control can achieve perfect tracking at every sampling point. Feedback characteristic is enhanced by inter sampling technique. Simulations and experiments are carried out to compare the proposed method with a single-rate deadbeat controller for non-sinusoidal reference waveform. Finally, the proposed method is applied to a nonlinear rectifier load.

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