Combination Phase Lead Compensation RC for an Inverter

In conventional repetitive control, integer-order phase lead compensation will be over compensation or under compensation under low sampling frequency. For this reason, an improved repetitive control based on combination phase lead compensation is proposed. In this paper, the model of the inverter is built, and then the improved repetitive control scheme, including internal model filter Q (z), low-pass filter S (z), and the proposed combination phase lead compensator are designed. Furthermore, experiments of inverter based on TMS320F2812 are implemented, and the results show that proposed repetitive control scheme can improve the quality of the output voltage waveform.

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