A shaded pole motor is constructed with salient poles in the stator. Each pole has its exciting coil. A 1/3rd portion of each pole core is surrounded by a strap of copper forming a closed loop called the shading coil. The rotor is a usual squirrel cage type. The common form of these motors has only […]
Single phase motors
The hysteresis motor is well known for its noiseless operation. Therefore it is generically used in audio recording-related equipment. In this article, I am discussing the working principle of hysteresis motor. It is a single-phase motor whose operation depends upon the hysteresis effect i.e. magnetization produced in a ferromagnetic material lags behind the magnetizing force.
A universal motor is a modified form of a DC series motor and is widely used in home appliances like mixers and machine tools. In this article, I am discussing the universal motor working principle. The construction of universal motor is very similar to a two-pole DC series motor. It consists of two field coils wound on a
A capacitor motor is also a split-phase induction motor. In this motor, starting winding has a capacitor in series with it. This is improved form of split phase motor. This type of motor was developed at the later stage. These motors have higher starting as well as running torque. This is the main advantage of
A split phase motor is provided with an auxiliary stator winding called starting winding in addition to main or running winding. These windings are placed in the stator slots. Both the windings are put in parallel. The purpose is to get two different currents sufficiently displaced in phase from each other so that a revolving