Single Phase Induction Motor
The single phase induction motor is Classified into 4 motor
- Split Phase Induction Motor
- Capacitor Start Induction Motor
- Capacitor Start Capacitor Run Induction Motor
- Shaded Pole Induction Motor
Split Phase Induction Motor
The stator has two winding i.e Main winding/Running winding and Auxiliary winding/Starting winding. A centrifugal switch is connected in series with the auxiliary winding,to disconnect the auxiliary winding from the main winding when the motor achieves a speed of 70-80% of synchronous speed.
Working:
Auxiliary winding is 90 Degree in phase with the main winding.The running winding is inductive in nature that means current lags the voltage by an angle and the auxiliary winding is resistive in nature that means the current and voltage are in phase with each other.
To create a phase difference between 2 winding the starting winding must carry high resistance.
The result of these 2 current i.e Itotal which produces the rotating magnetic field which rotates in one direction.
As the starting and main current splits from each other by some angle hence this motor is called Split Phase Induction Motor
Advantages:
- Motor have low starting Current
- Motor have low starting Torque
- Motor are used in fans, blowers, centrifugal pumps
Application Of Single Phase Motors:
Shaded Pole induction motor are available to run with speed as low as one r.p.m.
Universal Motor/Single Phase Series Motor is used for the purpose of high speed and speed control is required. such as vacuum cleaners, drill machines.
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