The occurrence of faults in permanent magnet synchronous motor drives and its effects on the power supply quality

Abstract

The non-sinusoidal current drawn by variable speed drives has increase the concern about its effects on the distribution system power quality. On the other hand, electrical drives based on permanent magnet synchronous motors have become serious competitors against induction motors drives. This paper presents a study of the effects on the power supply quality due to the occurrence of faults in a permanent magnet synchronous motor drive. Only single open-circuit faults in the inverter are considered.