Patent ID: 9444318
Filing Date: 2016-09-13
CPC Classification: H02K,Y02E

Claim Text:
1. A magnetic gear system comprising: a magnetic gear comprising first and second moveable members adapted to interact in a magnetically geared manner via a first electrical winding arrangement adapted to generate, at least in part, a first magnetic flux having a first number of pole-pairs, and one or more pole-pieces adapted to modulate the first magnetic flux to interact with a second magnetic flux having a second number of pole-pairs, wherein the first electrical winding arrangement is associated with one of the first moveable member, the second moveable member, and a stator, and the second magnetic flux is associated with another of the first moveable member, the second moveable member, and the stator; wherein one of the first and second moveable members is adapted to be coupled to an input shaft of the magnetic gear and the other of the first and second moveable members is adapted to be coupled to an output shaft of the magnetic gear, the input shaft being coupled to a prime-mover that is external to the magnetic gear; and wherein the magnetic gear system is adapted to transmit torque through the magnetic gear in a geared manner; and a controller adapted to supply multiphase, temporally displaced, AC currents to the first electrical winding arrangement, wherein the first electrical winding arrangement is a spatially distributed multi-phase winding, to produce a rotating field, wherein a ratio of the gear is varied as a function of the frequency of the AC current.