Research on High Efficiency V/f Control of Segment Winding Permanent Magnet Linear Synchronous Motor

By analyzing the relationship between the electromagnetic parameters and the secondary position during the primary and secondary coupling transition of the segment winding permanent magnet linear synchronous motor (SW-PMLSM), the variable parameter mathematical model of the rotor side of the SW-PMLSM is established. Taking the three-stage primary lifting system as an example, the dynamic process of the whole system is simulated and analyzed. According to the characteristics of its parameters, the segmentation vector control is obtained as the best stability control method. However, in practical applications, in order to save costs, the segmented linear motor often adopts the effective section parallel power supply mode, and the SW-PMLSM parallel power supply model is obtained by approximate simplification. This paper proposes a SW-PMLSM high-efficiency V/f control method, which combines the advantages of traditional V/f control and field-oriented control. It does not need to install position sensor, and can realize simple and high-performance motor drive. Finally, simulation and experimental results are provided to validate the effectiveness of the fidelity of the proposed strategy.