Electro-Mechanical Energy Conversion Devices

Electric motors – driving industrial machines (hammer presses, drilling machines, lathes, shapers, blowers for furnaces) and domestic appliances ( refrigerators, fans, water pumps, toys, mixers)

Generators – hydro-electric power plants, steam power plants, diesel power plants, nuclear power plants and in auto-mobiles

During conversion, whole of the energy in one form is not converted in the other useful form.

• Most of the input power is converted into useful output power.

• Some of the input power is converted into heat losses (\(I^R\)) which are due to the flow of current in the conductors, magnetic losses (hysteresis and eddy current losses) and friction losses.

• A small portion of input power is stored in the magnetic field of electro-mechanical device.