Condition monitoring and sensor based robust protection for inverter fed induction motor drive system

The objective of this work is to protect the induction motor drive system from open circuit fault, short circuit fault and high voltage stator fault. A rectifier is used to convert the ac supply in to dc and this dc supply is boosted up with SEPIC convertor. This dc supply is converted into variable AC using three phase inverter. This is given as input for the induction motor. Sensors are used to identify the current operating condition of the motor. Voltage sensor is used to identify the high voltage occurred in a system. A tripper is provided to protect the motor from various faults like open circuit, short circuit and high voltage faults.