A New Characteristics of Brushless Single-Phase Half-Speed Synchronous Motor

Abstract

In this paper, a new brushless single-phase self-excited type half-speed synchronous motor which is combined with the voltage source inverter is presented. The diode is inserted into one phase of the stator winding, and then the stationary magnetic field is superimposed on the alternating magnetic field. The motor is compelled to run at exactly half synchronous speed. The rotor structure of the proposed motor are composed of the quadrature-axis (q-axis) squirrel-cage damper winding on the salient-pole. The proposed motor is very simple, robust and maintenance-free. The experimental results indicated that the motor has an availability for practical use.