| 摘要 |
A poly-phase stator 110 for an electrical machine 101 comprises a plurality of coils 170. The coils are mounted on a stator body to form poles of the stator. These coils are discrete coils having terminals that are electrically connected to end-connection apparatus. The end-connection apparatus provides end connections between the coils and is arranged substantially to provide electrical balance between the phases (U, V, W). The switching means is operable to switch coils in the same phase between series and parallel connection to a power supply. The switching means may be arranged to switch at least one coil in one of the phases between a series connection with at least one other coil in that phase and a parallel connection with that at least one other coil. The electrical machine may comprise an external permanent magnet rotor 100 and internal stator 110. The electrical machine may be housed in a wheel hub and/or a crank housing of a vehicle. |
