Abstract
Switched Reluctance Motor (SRM) presents simple construction, high starting torque, wide speed range, high efficiency and high reliability which are appropriate for an Electric Vehicle (EV) drive system. However, SRM has some issues such as high torque ripple, acoustic noise, vibration due to non-linearities, and require a position sensor for control. The purpose of this paper is to compare two different control techniques and to find which method can provide better performance in terms of controllability and efficiency. The first technique is Direct Instantaneous Torque Control (DITC), i.e only torque is controlled with in the hysteresis band. The second technique is Direct Torque and Flux Control (DTFC), i.e both torque as well as stator flux vector is controlled in the hysteresis band. Principles of both these methods are discussed in detail. The performance analysis of these methods for 6/4 SRM are carried out and validated from simulation results. Conclusions are drawn from the results and the advantages and drawbacks of each method are addressed.
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