Synchronous motor construction

Synchronous motor construction

In this  following video  we have disclosed the construction details of Synchronous motor.

video credits to  A maniramakrishna

•A synchronous motor is a  constant speed motor.

•It can be operated over a wide range of power factors.

•It is a doubly excited machine.

Advantages of synchronous motor

•Power factor can be controlled easily.

•Motor can work at lagging, leading & upf.

•Speed is constant and independent of load.

Disadvantages of synchronous motors

•It is not self starting motor.

•It requires dc excitation.

•Initial cost is very high.

•It can not be used for variable speed drives.

•If the motor is over loaded it may fall out of step.

•It has a tendency to Hunt.

Applications of synchronous motors

It can be used as power factor corrector.

Constant speed applications like clocks,air compressors & centrifugal pumps

Improving voltage regulation of long transmission lines

Frequency changers