Investigation on characteristics of braking operation of switched reluctance motor drives for electric vehicles

Three criteria are proposed to evaluate braking operation of switched reluctance motor drives for electric vehicles. They are the average torque, the average torque per average excitation power and the average torque per phase rms current. They imply the braking torque, the efficiency of braking operation and the copper loss. Thus, the effects of the turn-off and turn-on angles on these criteria are investigated in detail. The investigation results are very beneficial to develop the new control method for best braking operation of switched reluctance motor drives in electric vehicles.