This paper proposes sliding mode control (SMC) method for improvement of dynamic response for IPMSM based on DTC with
constant switching frequency. DTC with constant switching frequency method consists of PI torque controller and triangular
comparator for constant torque error status. It has the poor dynamic response compared to conventional DTC. This paper proposes
improvement method of dynamic response of DTC with constant switching frequency by using SMC. Simulation results confirm the
effectiveness of the proposed method.