Modeling of Doubly Salient Electro-Magnetic Motor Based on Look-Up Table Method
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    Abstract:

    In order to analyze the control strategy of doubly salient electromagnetic motor (DSEM), it is necessary to establish an accurate control model. The stator and rotor of DSEM are both doubly salient structure, which has obvious edge effects and high local saturation. The flux linkage and torque of the motor are both nonlinear functions of armature current, excitation current and rotor position angle. Therefore, it is difficult to establish accurate control model by conventional methods. Based on the indepth analysis of the electromagnetic characteristics of the motor, the data table of flux linkage and torque about the relationship between current and rotor position angle is established by finite element simulation. The flux linkage and torque model functions of DSEM are built by using the threedimensional lookup table Simulink method, which is then used to establish the simulation model of DSEM together with the voltage equation. All aspects of the model are analyzed and verified. Taking the noload back electromotive force (EMF) of hysteresis chopping of excitation winding and asymmetric control strategy for armature current as an example, the simulation results are compared with the finite element simulation and experiment. The results verify the accuracy, effectiveness and feasibility of the model.

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MING Qingyong, CHEN Zhihui, FENG Chengshuang. Modeling of Doubly Salient Electro-Magnetic Motor Based on Look-Up Table Method[J]. Electric Machines & Control Application,2021,48(6):49-56,62.

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History
  • Received:February 06,2021
  • Revised:April 06,2021
  • Adopted:
  • Online: June 25,2021
  • Published: June 10,2021
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