Effects of short power interruptions and voltage sags on the performance of line start permanent magnet synchronous motor

Line Start Permanent Magnet Synchronous motors are attracting growing attention for high duty factor industrial applications. Investigation of the performance of these motors under practical supply conditions facing power quality problems is the need of time. Voltage sags and short time interruptions contribute to 80% power quality related problems. In this paper, the behavior of this motor is studied under short power interruptions and voltage sag using dynamic model of the machine developed in Simulink platform.