29-12-2012, 02:39 PM
Switched Reluctance Motor (SRM)
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ABSTRACT
Among the various electrical drive system available, switched reluctance motor (SRM) has become a popular choice for the domestic & industrial applications due to its simple and robust construction. More over this motor do not have winding in the rotor; hence it is suitable for high speed applications (above 10000 rpm). These motor are extensively used in aerospace, automotive and other home applications. The motor have winding in the stator which is excited from separate DC source. The control of the motor is obtained by using converter circuits that control the excitation of phase by switching converter switches. The conventional converter circuit suffers from low power factor and high harmonic which is turns affects the performance of the motor.
The aim of the work is to develop a suitable converter circuit that gives an improved power factor and low current harmonic. Various converter topologies are studied and simulation of asymmetric bridge converter was carried out in MATLAB/SIMULINK environment to study its performance on the various parameters of switched reluctance motor (SRM). Further the simulation of Diode Bridge Rectifier circuit (DBR) & the Switching Power Converter with Power Factor Correction (SPC-PFC) is carried out. The performance of SPC-PFC is compared with DBR circuit and it found that the SPC-PFC circuit proves to be superior circuit for improving power factor and mitigating the harmonic content.