Hyunseob Kim, Jungho Han, Young-Il Lee, Joong-Ho Song, and Kyo-Beum Lee, "Torque Predictive Control of Permanent-Magnet Synchronous Motor using Duty Ratio Prediction," in Proc. ISIE Conf., May 2013, pp. 1–5. > Paper

In this paper, a torque ripple reduction method is presented for PMSM controlled by the torque predictive control. The proposed

method, which predicts the duty ratio of the active stator voltage applied, makes it possible to relatively reduce the torque ripple in

the steady state as well as to remain the good dynamic response in the transient state. With the duty ratio prediction method, the

magnitude and time interval of the active stator voltage vector applied can be continuously controlled under the varying operation ​

conditions. Simulation results show validity and effectiveness of this work.