Effects of Magnetic Saturation on the Performance of Thyristor Commutatorless Motors

The ratings and the other constants of motors are designed within a magnetically saturated region. Studies of motors, however, have dealt with and have been limited to the problems in a linear region for the sake of simplicity. A basic study of the operating performance of commutatorless motors in the magnetically saturated region is presented here. The magnetic saturation is evaluated in terms of the permeance of a magnetic circuit. Digital simulation based on this basic study reveals the effects of the magnetic saturation on the static characteristics of the commutatorless motors. The theory established in this paper for the analysis of the effects of the magnetic saturation can successfully be applied to other kinds of motors as well as to commutatorless motors.