Patent Number: 7,612,463

Title: Generator

Abstract: Within a power generating arrangement 1 it is typically necessary to provide a coupling with an electrical power distribution cable 5. Previously this was sometimes achieved through use of brush gear and slip rings but such arrangements are subject to regular replacement for wear, maintenance and also there is a requirement to control humidity about the brush gear coupling. Alternatively, a system allowing an amount of rotation, limited by cable wind up was used. By providing a transformer in which windings 15, 16; 36, 37 are physically separated by an air gap 14, 39, but still induce voltage from variation in the magnetic flux, it is possible to create a power generating transfer transformer which can be rotated while driving electrical current for an external load. One component 10, 38 acts as a stationary stator for ease of coupling to a power distribution cable 5 whilst the other rotating component incorporates another winding 16, 36 with an alternating current in it in order to stimulate a voltage and therefore current in the stationary winding 15, 37 for driving electrical current through to the external electrical load 40.

Inventors: Cullen; John James Anthony (Chellaston, GB), Rolt; Andrew Martin (Derby, GB)

Assignee: Rolls-Royce plc

International Classification: F03D 9/00 (20060101)

Expiration Date: 1/03/02017