Types of Single Phase Induction Motor

Design analysis of capacitor-start capacitor-run single-phase induction motors

The bearings are pressed

Motors are very versatile electromechanical components because they can be sized, configured, and constructed to fit any situation or perform any duty. Both capacitors have different values. In order to produce rotating magnetic field there must be some phase difference. This non uniform distribution of flux causes magnetic axis to shift in the middle of the non shaded part.

These motors consist of

The smaller portion carries the copper band and is called as shaded portion of the pole. Split phase induction motor. Wikipedia Single Phase Induction Motors A single phase induction motor is an electric motor that operates on a single waveform of alternating current. Capacitor Run Motor Capacitor Run Operation Uses a lower rated capacitor because the capacitor is in the circuit at full load speed at all times.

The speed reversal

Since this shaded portion is short circuited, the current is produced in it in such a direction to oppose the main flux. The speed reversal is also difficult and expensive as it requires another set of copper rings.

The centrifugal switch is a normally close control device that is wired into the start winding. So, these motors produce very high starting torque.

According to Faraday's law whenever there is change in flux emf gets induced. The flux in shaded pole lags behind the flux in the unshaded pole. To obtain a high starting torque, the two conditions are essential. The start winding is permanently connected to the capacitor in series. In order to clearly understand the working of shaded pole induction motor consider three regions- When the flux changes its value from zero to nearly maximum positive value.

The phase difference between these two fluxes produces resultant rotating flux. We know that the running winding is inductive in nature. This change of flux induces emf in the shaded coil. It is also used to drive office machinery.

Since this shaded

Since the copper band is short circuit the current starts flowing in the copper band due to this induced emf. These motors consist of the split phase, shaded pole, and capacitor motors. The bearings are pressed into the set of end bells which are filled with a lubricant to allow fluid motion. The capacitor used in these motors are of electrolytic type and usually visible as it is mounted outside the motor as a separate unit.

The capacitor used in

Types of Single Phase Induction Motor

Since the copper band isAccording to Faraday's law