The present invention relates to a direct torque control method of SRM using SVM, and more specifically, a torque ripple (DTC-SVM (Direct Torque Control-Space Vector Modulation) is used by combining direct torque control (DTC) and SVPWM technique) It relates to a direct torque control method of SRM using SVM to reduce torque ripple to improve SRM efficiency. The SRM direct torque control (DTC) method using an SVM according to an embodiment of the present invention has a first to third phase, and a rotor rotates from the first phase to the second phase and from the second phase. As a third phase, as a direct torque control method for SRM using the SVM rotated counterclockwise from the third phase to the first phase, The PWM inverter interlocked with the SRM is controlled by the spatial vector modulation (SWM) for pulse width modulation (PWM) control, and a reference voltage vector in one sampling period Approximate to 1 and 2 basic vector and zero vector, the first phase is the signal of Q1, Q2, the second phase is the signal of Q3, Q4, the third phase is Q5, With the signal of Q6, When the spatial vector modulation (SWM) is commutated from the first phase to the second phase, In the first basic vector, the first phase is 1, the second phase is 1, and the third phase is 0, and Q1=1, Q2=1, Q3=1, Q4=1, Q5 =0, Q6=1, the second basic vector has the first phase 0, the second phase 1, the third phase 0, the Q1=0, the Q2=1, Q3=1, Q4=1, Q5=0, Q6=1, and the zero vector has the first phase 0, the second phase 0, the third phase 0, and the Q1. =0, Q2=1, Q3=0, Q4=1, Q5=0, Q6=1.
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