1. School of Electrical and Information Engineering Tianjin University Tianjin 300072 China; 2. Tianjin Engineering Center of Electric Machine System Design and Control Tianjin Polytechnic University Tianjin 300387 China
Abstract：Duty cycle model predicted torque control uses a active vector and a zero vector in a control period to control the permanent magnet synchronous motor. The traditional duty cycle control strategies only focuses on the improvement of torque performance and ignores the suppression of flux ripple reduction, which will causes the flux of the motor to fluctuate greatly and will result in deterioration of the motor's current performance and torque performance. Therefore, this paper proposes an improved three-vector model torque predictive control strategy that suppresses flux fluctuations. By establishing an effective vector selection table, it can flexibly add an additional active vector based on the classical duty cycle model predictive torque control and the duty cycle of each vector is obtained with a small amount of calculation, this paper aim to optimize the control performance of the flux and the torque of the permanent magnet synchronous motor system. The feasibility and effectiveness of proposed strategy are verified by the experimental results on a 6kW PMSM.
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2018, Vol. 33 
