| Patent Number |
Title Of Patent |
Date Issued |
| 7557481 |
Rotor for an electrical machine |
July 7, 2009 |
| A rotor 10 for an electrical machine comprising a rotor body 12, at least one magnet 18 coupled to the rotor body 12 and a retainer 22 for retaining the at least one magnet 18 to the rotor body 12, the retainer 22 comprising at least one elongate fibre in a metal matrix. |
| 7554301 |
Fault current limiting in an electrical power network |
June 30, 2009 |
| Generators 12a are for a distributed generation system. A control system 32a receives information about network faults 14a. In normal conditions, the control system 32a controls the field current in the field coils of the generator 12a, to maintain generator output voltage at the rated |
| 7521901 |
Electrical power stabilisation |
April 21, 2009 |
| Use of a common electrical power bus to which a number of electrical power generators and consumers are coupled is well known. Typically, a high electrical capacitance is provided across the bus in order to provide stabilisation in the switching of generators and consumer devices as well |
| 7372676 |
Motor coil-shorting detecting unit |
May 13, 2008 |
| In order to be acceptable for safety critical applications, it is necessary for an electrical machine to allow continued operation despite an electrical short circuit in one of the operational phases of that electrical machine. It will be appreciated that an electrical short circuit |
| 6888439 |
Electrical conductor winding and a method of manufacturing an electrical conductor winding |
May 3, 2005 |
| An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor (82) arranged in the slot (7 |
| 6794781 |
Compact electrical machine |
September 21, 2004 |
| 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), statio |
| 6765328 |
Shaft bearings |
July 20, 2004 |
| An inner rotatable shaft 16 is located within an outer rotatable shaft 18. A stator 52 is provided around the shaft 18. The shaft 18 has a circumferential ring of regions 54a, 54b alternately of relatively high and relatively low magnetic permeability. Flux is therefore transmitted b |
| 6680667 |
Electrical conductor winding and a method of manufacturing an electrical conductor winding |
January 20, 2004 |
| An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor (82) arranged in the slot (7 |
