Patent ID: 9172295
Filing Date: 2015-10-27
Classification: H02K

Abstract:
1. A magnetic gear arrangement comprising: a first gear member for generating a first magnetic field; a second gear member for generating a second magnetic field; and a plurality of interpoles disposed between the first gear member and the second gear member for coupling said first magnetic field and said second magnetic field to control a gear ratio between said first gear member and said second gear member, wherein at least one interpole comprises a circuit, the circuit comprising a coil, an electronic filter and a switch, the switch being operable to open or close the circuit to activate the coil, such that activation of said coil alters a magnetic flux at said interpole so as to vary the coupling between said first magnetic field and said second magnetic field, said coil is wound around the interpole, and said coil is electrically connected to the electronic filter, which modifies current passing through said coil, so as to modify influence of said coil on the magnetic flux at said interpole.