Category: Synchronous Motors

In the previous article we came to know that synchronous motors are not self-starting so to make them start automatically we should add some tweaks.We should rotate rotor near to the speed of the synchronous speed, so it attains synchronous speed.We have some fine methods to start the synchronous motor.They are, 1. Using pony motors. 2. Using small d.c. motor. 3. As a slip ring induction motor. 4. Using damper winding. 1. Pony Motor Method / Induction Motor Pony motors are small motors mostly induction motors, which are used to run the rotor near to…

A motor is an electro-mechanical device which converts electrical energy to mechanical energy. and a 3 phase motor runs at synchronous speed is called synchronous motor.Synchronous motor mainly runs on principle of magnetic locking between rotor and RMF(Rotating magnetic field).When two unlike poles are brought near each other, if the magnets are strong, there exists a tremendous force of attraction between those two poles. In such condition the two magnets are said to be magnetically locked. Synchronous Motor Working Principle:- When 3 phase voltage applied to electric conductors are placed in a certain geometrical…