Direct torque control of permanent magnet synchronous motor using real-time simulator with FEA based motor model

This paper presents high performance control techniques of permanent magnet synchronous motor by using a real-time simulator with a finite element analysis based motor model. These techniques enable to consider nonlinear characteristics of PMSM in motor drives because FEA based motor model can takes into account of spatial harmonics and magnetic saturation. Therefore, these techniques take some advantages for development control method and drive system. In this paper, high performance torque controls for PMSM are proposed as one of the advanced control techniques given by the real time simulating with the FEA motor model. The proposed torque controls are developed based on direct torque control (DTC) of PMSM and output torque and stator linkage flux estimator using FEA based motor model. The proposed method can achieve both fast torque reference and smooth torque with reducing pulsation torque which is generated spatial harmonics neglected in the conventional DTC method. The effectiveness of proposed method is verified by performing some simulations and experiments.