Theory supply

Single phase induction motor is an AC motor were electrical energy is converted to mechanical energy to perform some physical task. This induction motor requires only one power phase for their proper operation. They are commonly used in low power applications, in domestic and industrial use. Simple construction, cheap cost, better reliability, eases to repair and better maintenance are some of its markable advantages The main components of the Single Phase induction motor are stator and rotor. Stator is known to be the stationary part. Usually, the single phase alternating supply is given to the stator winding. Rotor is the rotating part of the motor. Rotor is connected to the mechanical load with the help of a shaft. A squirrel cage rotor is used here. It has a laminated iron core with many slots. Rotor slots are closed or semi-closed type. The rotor windings are symmetrical and at the same type it is short circuited. An air gap is there between the rotor and the stator. The most practical applications of this motor are in refrigerators, clocks, drills, pumps, washing machines etc. The stator winding in the 1Ø induction motor has two parts: Main Winding and Auxiliary Winding. Usually, the Auxiliary winding is perpendicular to the main winding. In 1Ø induction motor the winding with more turns is known as main winding. While the other wire is called as auxiliary winding. Single phase AC supply is given to the stator winding. Due to this a magnetic field is produced which pulsates in sinusoidal manner. After sometime the field polarity reverses and the alternating flux cannot provide the required rotation to the motor. But if the motor is moved by external means, the motor will rotate with finite speed. Using the double field revolving theory.