Computation and analysis of temperature field for transverse flux permanent magnet linear motor in continuous reciprocating running

According to the specific application of the transverse flux permanent magnet linear motor(PMLM) in the linear servo system, the motor thermal characteristics was studied in the condition of running back and forth for a long time. On the basis of comprehensive consideration of the particularity of motor structure and operation of state, the three-dimensional temperature field calculation model of transverse flux PMLM was established, taking into account the motor heat, work status, and motor part of the heat exchange and other factors, the motor thermal conductivity of the material, the heat capacity and heat transfer coefficient of each surface were discussed in detail. Furthermore, the changing law as heat transfer coefficient of mover surface and air-gap surfaces as speed was illustrated. The transient temperature field of the transverse flux PMLM was calculated in the condition of running back and forth for a long time. Accuracy of the numerical results was verified by the testing of the characteristics of prototype.