11-11-2014, 10:42 AM
Abstracts: Switched reluctance motor (like the stepper motor) carries windings only on the stator and operates on the reluctance principle .Its rotor position is sensed and used to switch on and switch off phase windings. It is now being made up to 0.5 to 80 KW and it is used in applications like washing machine, fans, aircrafts, vacuum cleaner, servo drives, Fuel pump operations etc Inductance of a phase winding in a switched reluctance motor varies with rotor position. Direction of the developed torque does not depend on the direction of current, but it does depend on change in inductance with respect to rotor position. For a unidirectional torque, current must be present in the coil only when the rate of change of coil inductance with rotor position is positive. Study of switching methods to obtain currents of the desired waveforms in an inductance are the main aim of the project.