A Novel Voltage and Current Double Closed-loop Control Method Based on Inverter Load on-Line Parameter Estimation

摘要

Performance of DC/AC Inverters is decreased dueto variable load parameters. Based on a voltage and currentdouble closed-loop control inverter model, a novel load on-lineparameter estimation control method is proposed. In thismethod, load parameters of inverters are calculated on-line. Andthen, controller coefficients of inverters are modified accordingto load parameters. Modify strategy of controller parameter isgiven and experiment and simulation results are given to confirmthe validity of this method.