Experimental Verification for Utilizing Carrier Harmonics Excitation in Permanent Magnet Motor with Field Windings

Abstract

This paper presents a new technique for carrier harmonics utilization for field excitations and its experimental demonstration. The system is composed of a permanent magnet rotor structure with a wound-field and concentrated winding stator. An induction coil with a series connected capacitor and a field coil with a rectifier are installed on the rotor. The resonance frequency of the LCR series circuit is set to the carrier frequency. Experiments are conducted and the test results are demonstrated along with the driving characteristics.