SALIENT-POLE ROTOR OF A TRACTION SYNCHRONOUS ELECTRIC MACHINE

摘要

The proposed salient-pole rotor of a traction synchronous electric machine contains a yoke assembled from annular disks, pole shoes, and the rotor winding. The rotor disks contain outside projections, which form the pole bodies. The pole coils of the rotor winding are installed at metallic frames with insulating gaskets. These gaskets are installed, with gaps, at the pole bodies. In the said gaps, spacers are installed. In the insulating gaskets,on the side of the pole shoes, openings are provided that form, together with the gaps, ventilation ducts between the frame of the pole coil and the pole body. In the rotor core, ducts for supplying cooling air are provided. The ventilation channels of the pole bodies and the ducts of the rotor coreprovide the direct air cooling of the rotor pole coils. The proposed design of the rotor provides a possibility to improve heat rejection conditions for the pole coils and, as a result, increase the specific power of the electric machine.