Compact electrical machine
AssigneeROLLS-ROYCE plc
InventorsAnthony G. Razzell, John J A Cullen
Life of this patent
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AssigneeROLLS-ROYCE plc
InventorsAnthony G. Razzell, John J A Cullen
Estimating the term…
An electrical machine comprises a combined magnetic gearbox and electrical generator. A first set of permanent magnets (30) are arranged on a rotor (16) to produce a spatially variable first magnetic field. A second set of permanent magnets (32) are arranged on a rotor (40,41,43), stationary pole pieces (36) are positioned between the first set of permanent magnets (30) and the second set of permanent magnets (32) to interfere with the first magnetic field. Rotation of the rotor (16) relative to the pole pieces (36) produces a second magnetic field which rotates the second set of permanent magnets (32). A stator (42) has windings (46) to transduce a changing second magnetic field produced by the rotation of the second set of permanent magnets (32) into an electrical voltage. The electrical machine is useful for a wind turbine generator. Alternatively the arrangement may be modified to produce an electrical motor.
An electrical generator arrangement comprising:
An electrical motor arrangement comprising:
A method of generating electricity comprising the steps of:
A method of transducing time varying electrical energy into the rotation of a motor shaft, comprising the steps of:
Dependencies are inferred from the claim text.