Finite Control Set Model Predictive Control With Current Disturbance Suppression for Permanent Magnet Synchronous Motor

Finite control set model predictive control (FCSMPC) has attracted much attention because of its simple structure and easy implementation, but the current disturbance caused by the discontinuity of the switching state associated with the minimum state of the cost function in permanent magnet synchronous motor is always an unavoidable problem for FCSMPC. This article will start with the error between the feedback current and the reference current, and optimize the error between them in the cost function, so as to realize the reduction of output current disturbance due to the discontinuous switching state. Subsequently, the sliding mode schemes are introduced to selectively reduce the error between them, thereby, indirectly enhancing the current robustness of FCSMPC. Meanwhile, a detailed quantitative analysis of the error between them is presented using sliding mode schemes. The discussion then, focuses on the suppression capability of different sliding mode schemes. Finally, different experiments are designed to verify the feasibility of the controller and the correctness of the theory.