Torque pulsation mechanism and highly nonlinear magnetic characterization of switched reluctance motors (SRM) lead to unfavorable torque ripple compared with the most electric machines. One of the most valuable methods in torque-ripple minimization is torque sharing functions (TSFs). In this method, reference torques for incoming and outgoing phases under the commutation region defined so that the total torque remains at constant level. In this dissertation, previous works in TSFs investigated, compared and peer-reviewd. Since the most effective region for TSFs are limited to the low-speed applications, a modification method will be proposed to enhance constant torque region which capable to be applied on each TSFs. Moreover, an analytic and invertible function will be introduced to consider nonlinear and magnetic saturation effects based on motor phase current and rotor position. Taking this analytic function into account and solving the minimization problem for copper losses, a family of TSFs will be achived. Minimizing of copper losses due to the incoming and outgoing phase currents will be considered using accumulative constant weights in the objective function. Finaly, selecting the optimum weight values will be discussed for different speed region as well as the performance comparison with the conventional TSFs. Experimental results will be introduced to validate the effectiveness of the proposed methods. Keywords Switched Reluctance Motor, Torque-Ripple Minimization, Magnetic Saturation Effect, Copper Loss Reduction
