A novel voltage and current double closed-loop control method based on inverter load on-line parameter estimation

Performance of DC/AC Inverters is decreased due to variable load parameters. Based on a voltage and current double closed-loop control inverter model, a novel load on-line parameter estimation control method is proposed. In this method, load parameters of inverters are calculated on-line. And then, controller coefficients of inverters are modified according to load parameters. Modify strategy of controller parameter is given and experiment and simulation results are given to confirm the validity of this method.