Patent ID: 6788021
Filing Date: 2004-09-07
Classification: H02P

Abstract:
A method of automatic excitation angle control that supports efficient operation of a switch reluctance motor over an entire speed region to improve performance and efficiency, said method comprising the steps of:providing the switched reluctance motor; providing a controller for the switched reluctance motor; a first monitoring step of continuously monitoring a first turn-on angular position (&thgr;p) indicative of a first peak of a phase current; aligning said first turn-on angular position (&thgr;p) with a second turn-on angular position (&thgr;m) indicative of where the inductance begins to increase; a second monitoring step of monitoring said first peak of said phase current; and advancing or retarding a detected turn-on angle to said desired turn-on angle (&thgr;on) when a commanded reference current (Iref) cannot be produced by the controller; wherein said controller determines a desired turn-on angle (&thgr;on) that supports the most efficient operation of a drive system for the switched reluctance motor.