Analysis of Loss and Thermal Characteristics for Doubly Salient Electro-Magnetic Machine with Hollow Conductor

When doubly salient electro-magnetic generator (DSEG) operates at high speed, the high-frequency AC copper loss generated by the armature winding will bring challenges to the heat dissipation of DSEG. In this paper, the copper loss semianalytical calculation of the hollow conductor is carried out based on the magnetic field distribution characteristics in the slot, the special-shaped structure design is carried out on this basis, and the optimization effect is verified. Secondly, the steady temperature field model for DSEG with hollow conductor is established, the influence of DSEG parameters on the temperature field distribution is discussed in detail, and the optimization effect of the hollow conductor structure is analyzed.