Introduction To Electric Drives

Drives are employed for systems that require motion control e.g. transportation
system, fans, robots, pumps, machine tools, etc. Prime movers are required in drive systems to
provide the sources: diesel engines, petrol engines, hydraulic motors, electric motors etc.
movement or motion and energy that is used to provide the motion can come from various
Drives that use electric motors as the prime movers are known as electrical drives. There are several advantages of electrical drives:

• Flexible control characteristic: This is particularly true when power electronic converters are employed where the dynamic and steady state characteristics of the motor can be controlled by controlling the applied voltage or current.

• Available in wide range of speed, torque and power

• High efficiency, lower noise, low maintenance requirements and cleaner operation

• Electric energy is easy to be transported.