Effect of Induction Motors Parameters On the Performance at Transient Operating States


The effect of induction motors as loads in modern electrical power systems is very large, specially when these motors suffer from transient behavior conditions. These transient conditions, which occur owing to electric faults characterized in turn by their high speeds, have their huge impact on the entire transient conditions occurring in electrical power systems. Park-Gorve equations technique is used in this research study in order to obtain the induction motor equations which are frequency variation dependent, and would thus result in getting the motor parameters under the transient operating conditions.This research study shows that maximum torque tends to increase motor current and decreasing the motor reactance. It shows that short circuit currents increase with the increase of mechanical loads of the motor.It also shows that lower moment of inertia result in larger starting motor currents and larger growth of motor current.Keywords: Induction Motors, Parameters, Transient.