Running characteristics improvement of brushless self-excied Half-Speed motor by using Power-angle control

摘要

A new brushless half-speed synchronous motor combined with a PWM inverter driven by phase-angle contrl is presented. The diode is inserted into one phase of the stator winding, and then the stationary magnetic field is superimposed on the revolving field. The rotor structure of the motor is composed of the quadrature-axis damper winding on the salient poles. By superimposing a stationary magnetic field on the stator, the motor is compelled to run at exactly half synchronous speed. In this paepr, the experimental results of the motor driven by power-angle control are shown.