Digital odd harmonic repetitive control of a single-phase PWM inverter

In this paper, a digital plug-in odd harmonic repetitive control scheme is proposed for a constant-voltage-constant-frequency (CVCF) single-phase PWM inverter. The approach occupies only half the data memory that a conventional repetitive controller required. Besides the advantage of simple implementation, it offers faster convergence of the tracking error. The proposed odd harmonic repetitive controller is a zero tracking error control scheme. Results are presented to validate the proposed approach.