Synchronous motor applications
(i) Power factor correction
(ii) Constant speed, constant load drives
(iii) Voltage regulation
Over excited synchronous motors having leading power factor are widely used for
improving power factor of those systems which employ a large number of induction
motors and other devices having lagging power factor such as welders and fluorescent
lights etc.
In constant speed applications, synchronous motors are well suited due to their high
efficiency and high speed, such as centrifugal pumps, belt driven reciprocating
compressors, blowers, line shafts, rubber and paper mill etc.
Voltage in long transmission lines varies greatly at the end when large inductive load
are present and when inductive load disconnected suddenly, the voltage tends to rise
considerably above its normal value because of line capacitance. Therefore, by
installing a synchronous motor with field regulator, the voltage rise can be controlled.
gregorymasila answered the question on February 20, 2018 at 16:25
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