Direct Torque Control of 8/6 Switched Reluctance Motor for Improved Torque Per Ampere

In this paper, direct torque control (DTC) of four phase switched reluctance motor (SRM) for improved torque per ampere is discussed. In conventional DTC, torque and flux linkage magnitude is controlled which results in production of negative torque which reduces torque per ampere. This paper introduces a DTC where flux hysteresis loop is removed. Moreover, new voltage vectors are developed to ensure that negative torque is not produced and torque per ampere is improved. Modeling of SRM is done in MATLAB/Simulink and the proposed control algorithm is also verified. Simulation results shows that torque per ampere in the case of proposed DTC is improved compared to conventional DTC. The proposed DTC is also implemented on DSP based experimental setup.