High Frequency Modular Electric Drive for Switched Reluctance Motor with Reduced Torque Ripple

Due to its advantages Switched Reluctance Motor (SRM) may be used in low and middle power vehicles. However, since this motor is characterized by significant torque pulsation, insufficient power density and complex electric drive it is not widely used, nowadays. Thus, to improve its characteristics, in this paper it is analyzed the SRM structures and it is proposed a proper relationship between the stator and the rotor poles with high energy efficiency. To minimize the torque pulsation a high frequency principle of magnetic flux formation with two section stator is proposed. To adapt the proposed principle a resonant converter with a soft switching, associated to two winding stator poles are used. In this way, the proposed modular SRM electric drive is constituted by only four resonant converters. The SRM electric drive was simulated in MATLAB Simulink® where the results were verified.