Abstract
According to the principle of internal mode, the resonant corrector is applied to the control system of single-phase inverter, which can effectively improve the output characteristics of the system. Based on the mathematical model, the dc input voltage fluctuation and load change are taken as the uncertain factors affecting the performance of the inverter, and the parameter optimization design of the resonant corrector is carried out based on pole assignment. The simulation results show that compared with the traditional quasi-PR controller, the controller designed with the resonance corrector parameter optimization can better adapt to the continuous large range of voltage fluctuation at the DC input end, and the system has good dynamic performance, waveform stability, and the ability to resist load disturbance.
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