Analysis of Harmonic Losses due to Inverter Supply in Dual Three-Phase Induction Machines

This paper presents an analysis of the additional harmonic losses in a dual three-phase induction machine, conducted for several modulation techniques. The time and spatial harmonics due to inverter supply are analysed using symmetrical components to investigate the effects of magnetic coupling in multi-phase machines. The harmonic losses are measured and segregation of the two loss components (current heat and core) performed in post-processing. The results are then juxtaposed with the harmonic losses in a three-phase induction machine serving as a reference.