Power Factor Correction of Synchronous Motor Using Fuzzy Logic

Abstract

Application of fuzzy logic theory in power factor correction of a synchronous motor is investigated in this paper. The power factor measured at the input terminals of a synchronous motor is adjusted to a required value using a fuzzy logic controler (FLC). If the measured power factor is different than the required reference value an error signal is generated. This error signal is evaluated by FLC to obtain a control signal for the synchronous motor excitation circuit since the power factor of a synchronous motor can be controlled and held at a desired value by adjusting the excitation current. Therefore it seem, to be more economic than other methods for some special applications.