Current error vector based prediction control of currents in segment winding permanent magnet linear synchronous motor

To maintain the characteristics such as greater thrust, higher efficiency without reducing the thrust stability, this paper proposes a segment winding permanent magnet linear synchronous motor (SW-PMLSM), whose iron core is continuous, whereas winding is divided. The discrete system model of the motor was derived. With the definition of the current error vector and selection of the value function, the theory of the current error vector based prediction control for the motor currents was explained clearly. According to the winding segment structure, the motion region of the mover was divided into five zones, in which the implementation of the current predictive control method was proposed. The experimental results show that the current control effect has good dynamic response and the mover passes across the winding boundary successfully.