Performance of stator salient pole disc brushless DC motor for EV

Among permanent magnet machines, the disc-type motor is find a growing interest in the direct driving of electric vehicles. In this paper, a new version of the disc motor is presented with the magnetic flux crossing the air-gaps and the stator axially. The stator of such a motor is much easier to manufacture. It concerns both stator core and a winding. The motor was manufactured with the aim of driving the wheels of a light vehicle directly, without mechanical gear. In the paper, a motor with a three-phase winding is discussed and its performance is analysed on the basis of measurements carried out on a motor prototype. The performance of this motor is compared with that of a torus-type machine.