Vibrations in Electric Machine with Permanent Magnets during Unsymmetrical Operation Point

Abstract

Abstract-The article presents the concept of an electromagnetic circuit of generator with permanent magnets designed for single phase work. The paper presents comparative analysis of simulation results of three generator operation points. First point was calculated as single phase work with serial connection of each phase winding. Second operation point was calculated as three phase asymmetrical load and the last one was calculated as three phase symmetrical load. The time course of electromagnetic torque in the air gap of machine for each operation point for rated power were displayed and discussed. The comparison of three waveforms of electromagnetic torque for each operation point was presented.Keywords-permanent magnet generator; permanent magnets; vibration; pulsations of torque; course of torque; single phase work; asymmetrical three phase work