BackEMF in Sychronous motor.pdf
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Synchronous motors operate at a single, constant speed determined by the frequency of the power supply. Back EMF is the voltage induced in the stator windings due to the rotation of the motor's rotor field. In an ideal synchronous motor, the back EMF equals the supply voltage, allowing the rotor to rotate in sync with the rotating stator field. When a load is applied to the motor, the synchronous motor maintains its constant speed unlike DC or induction motors whose speed decreases under load.
BackEMF in Sychronous motor.pdf
- 1. VK metha Synchronous motors are so called because they operate at only one speed, i.e. the speed of the rotating field. What is back E.M.F. in synchronous motor? Supply is given to motor then rotor rotates at synchronous speed. The situation has now become that stationary conductor placed in a rotating field of the rotor so there will a EMF in stator due to rotation of rotor. This is known as BACK E.M.F. In ideal machine, Back EMF will be equal to supply voltage. Motor on Load In D.C. motor and induction motors, an additional causes speed to reduce which reduces counter E.M.F. so that current drawn increases. This cannot happen sych motor because it runs at a constant