Synchronous Motor Excitation

For proper working of synchronous motor(i.e. in order to convert electrical energy into mechanical energy,) it is necessary to create magnetic flux between the air gap of rotor and stator of synchronous motor. Hence magnetizing current is required to set up magnetic flux in the air gap of motor. In case of synchronous motor, magnetic … Read more

Induction Motor Starting Torque Equation

Induction Motor starting Torque Equation

Starting torque is the torque developed by a machine at the instant of starting. During the start of induction motor, slip(s) is 1 since speed of the rotor is zero and it is at standstill. At standstill condition, torque generated by the induction motor is the starting torque. Torque developed by the rotor of induction … Read more

Starting Torque of Squirrel Cage Induction Motor

Double Cage Squirrel Cage Induction Motor

Starting Torque in Induction Motor: Starting torque means the torque developed by machine during starting. At the start of induction motor↗, rotor is initially at rest and slip S is 1 since speed of the rotor is zero w.r.t stator which is rotating at synchronous speed. Rotor frequency is given by the formula Rotor frequency Fr = … Read more

Difference between Squirrel cage and Wound rotor Induction Motor

Squirrel cage VS Wound rotor

Squirrel cage motor and slip ring (wound rotor) motor are the two types of induction motor↗. Slip ring induction motor is also known as wound rotor induction motor. Both these types of induction motor operates on the principle of faraday law of electromagnetic induction. The basic difference between squirrel cage↗ and wound rotor induction motor↗ is as … Read more