METHOD FOR CONTROLLING POWER SYSTEM CAPABLE OF GRID-CONNECTED OPERATION AND STAND-ALONE OPERATION

摘要

The present invention relates to a method for controlling a power system capable of a grid-connected operation and a stand-alone operation, which comprises the steps of: calculating a current reference value based on a grid voltage, a load voltage, a load current, and a reference current command value when the power system is switched from a grid-connected mode to a stand-alone mode; calculating a PWM duty cycle period by using the calculated current reference value as a reference value for controlling a current controller; and controlling a PWM signal of power supplied to a grid load based on the PWM duty cycle period.;COPYRIGHT KIPO 2016