To tackle at the deficiency of the inverter in filter inductor current feedback and filter capacitor current feedback,a method of load current feedback is proposed to improve the performance of the system. First the configutation method of output impedence was obtained through the modeling of output impedance. Then,the double closed-loop control of the load current feedback was analyzed to get the dosed lop transfor function and controuer parameters were set by using closed-loop of pole placement method. Finally,the simulation was conducted in Matlab and the results proved that the improved co...