A MAGNETIC GEAR ARRANGEMENT

摘要

Magnetic gear arrangements are known which comprise concentric gear rotors with a pole member assembly between them in order to provide modulation of the magnetic fields as the respective rotors rotate in order to couple drive across the gear arrangement. Such concentric configuration may be inconvenient. By providing a pole member which is shaped to extend between the gear rotors, with these gear rotors either internal or external of the pole member, it is possible to create displacement between the rotors both lateral along an axis of rotation as well as radially to provide offset and bevel gear configurations. The pole member comprises a number of pole elements through which a magnetic field is modulated between the rotors in order to transfer power. Furthermore, the pole member may incorporate windings which allow adjustment to the modulation efficiency of the pole members and therefore adjustment of the gear ratio. Furthermore, the windings may enable the gear arrangement to act as an electrical machine.