| 摘要 |
A traction motor for an electric vehicle, comprises a stator and a rotor rotatably mounted to the stator. The rotor comprises a rotor core and magnets fixed to the rotor core. The rotor core has 2P rotor poles formed by the magnets, P being an integer greater than one. The stator comprises a stator core having S teeth and field windings wound on the teeth, S being equal to 3·m·P where m is the number of phases. Field windings of each phase comprises P winding units. Each the winding unit comprises a first coil and a second coil connected in series. The first coils have a larger coil pitch and a greater number of turns compared to the second coils.
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