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Patrick Luk
Jinupun Poramaste, Chi Kwong, Luk Patrick: Axial flux electrical machines. Cranfield University, Jinupun Poramaste, Chi Kwong, Luk Patrick, BARKER BRETTELL, June 12, 2008: WO/2008/068503

An axial flux electrical machine having a rotor rotatable about an axis and the machine comprising at least one metallic pole support unit (10) arranged to have mounted thereon a plurality of cores (34) of magnetiseable material, such that the pole support unit (10) does not substantially electromag ...


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Patrick Luk
Luk Patrick Chi Kwong, Jinupun Poramaste: Switched reluctance motor. Univ Cranfield, August 15, 2007: EP1817835-A1

An electric motor (20) comprising a rotary shaft-mounted rotor member (28) having a plurality of discretely spaced magnetisable elements (26) disposed peripherally therearound extending co-axially with the axis of rotation of the shaft (27) to form a ring (36), respectively opposite inner and outer ...


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Patrick Luk
Luk Patrick Chi Kwong, Jinupun Poramaste: Switched reluctance motor. Cranfield University, Luk Patrick Chi Kwong, Jinupun Poramaste, HALSTEAD Richard Ralph, May 18, 2006: WO/2006/051318

An electric motor (20) comprising a rotary shaft-mounted rotor member (28) having a plurality of discretely spaced magnetisable elements (26) disposed peripherally therearound extending co-axially with the axis of rotation of the shaft (27) to form a ring (36), respectively opposite inner and outer ...


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Electromagnetic engine. Searete, Workman Nydegger, November 24, 2009: US07622814 (16 worldwide citation)

An engine includes a piston slidably disposed in a cylinder with a closed end. The engine further includes a converter operable with the piston to convert mechanical energy of the piston to electrical energy in the converter in a stroke and convert electrical energy of the converter to mechanical en ...


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Sanjay Kotha
Sanjay Kotha, Tirumalai S Sudarshan, Ramachandran Radhakrishnan: Magnetic fluid power generator device and method for generating power. Materials Modification, Dinesh Agarwal P C, January 3, 2006: US06982501 (14 worldwide citation)

A device for generating power includes a fluid including magnetic particles. A source magnetizes the fluid thereby inducing rotations in the magnetic particles for creating a magnetic flux. The rotations of the magnetic particles induce an electromagnetic force in a coil associated with the fluid.


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Chao Bi
Quan Jiang, Chao Bi: Method to detect the true zero-crossing points of the phase back EMF for sensorless control of brushless DC motors. April 12, 2005: US06879124 (13 worldwide citation)

In the present system and method, ZCP level signals of each phase voltage are first obtained. Among the detected ZCP level signals, some ZCPs are generated by phase back EMF, which are true ZCPs and other ZCPs by commutations, which are false ZCPs. The duration of the false ZCP level outputs varies ...


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Method of retrofitting an engine. The Invention Science Fund I, Workman Nydegger, December 28, 2010: US07856714 (8 worldwide citation)

A method of retrofitting for electrical power generation an internal combustion engine (including a plurality of pistons connected to a common crankshaft) includes applying to at least one and optionally to each piston a power converter operable to convert mechanical energy of the piston to and from ...


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Chao Bi
Chao Bi, Quan Jiang, Song Lin, Nay Lin Htun Aung, Hla Nu Phyu: Low profile permanent magnet synchronous motor with segment structure. Agency for Science Technology and Research, Martine Penilla Group, November 5, 2013: US08575797

A low profile permanent magnet synchronous motor with segment structure. In accordance with this invention, a stator assembly for an electromagnetic motor is provided. The stator assembly has a first stator core and a second stator core that couple windings. Teeth extend outward from each stator cor ...



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