METHOD FOR PREDICTING PHASE CURRENT

摘要

PURPOSE: A method for predicting phase current is provided to reduce a current error by measuring the current of PWM with a direct link current. CONSTITUTION: An effective voltage vector is successively applied to an inverter. A direct link current is measured. The three-phase current is measured at by using the direct link current. The three-phase current indicates the PWM period of the inverter. The direct link current is measured at in the final point of time of the effective voltage vector section.