Magnetic Gear

Magnetic Gear-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).

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Variable gear ratio electrical machine
Rolls-royce Plc
May 18, 2017 - N°20170141648

An electrical machine including a moveable permanent magnet configured to generate a first magnetic field. A stator including windings configured to excite a second magnetic field. A moveable inter-pole component located between the permanent magnet component and the stator, the inter-pole component comprising an array of magnetic inter-pole pieces. The speed of movement of the inter-pole component is controlled to ...
Cycloidal magnetic gear system
Emrgy, Inc.
April 20, 2017 - N°20170110956

A cycloidal magnetic gear system for a turbine system is disclosed. The system includes a first stator magnet ring, a second stator magnet ring positioned opposite the first stator magnet ring, and a rotor positioned between the first and second stator rings of magnets. The rotor may include a first side positioned adjacent the first stator magnet ring, and a ...
Method and apparatus for compact axial flux magnetically geared machines
The Texas A&m University System
April 13, 2017 - N°20170104388

An axial flux magnetic geared machine includes a high speed magnetic rotor and a low speed magnetic rotor maintained in a spaced relationship from the high speed magnetic rotor. A modulating structure is disposed between the high speed magnetic rotor and the low speed magnetic rotor. A stator is disposed in a radially central bore of one or more of ...
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Generator comprising a variable speed magnetic gear
Jaguar Land Rover Limited
January 26, 2017 - N°20170025977

A generator comprising a magnetic gear, the magnetic gear comprising a stationary member comprising a set of electromagnets, a first moveable member comprising a set of magnets, and a second moveable member disposed between the first moveable member and the stationary member. The second moveable member comprises a set of core members. The first and second moveable members are magnetically ...
Flywheel energy storage device, wind power generation system and vehicle energy feedback brake system
South University Of Science And Technology Of Chin A
January 26, 2017 - N°20170025922

Provided is a flywheel energy storage device including a radial magnetic gear, the radial magnetic gear includes an inner rotor, an outer rotor and n1 first magnetic pole adjustment sheets embedded in a first magnetic pole adjustment sheet base; a disc-type magnetic gear electric motor includes a first stator disc, a first rotor disc, a second stator disc, a second ...
Flux focusing magnetic gear assembly using ferrite magnets or the like
The University Of North Carolina At Charlotte
January 05, 2017 - N°20170005560

The present invention relates generally to a flux focusing magnetic gear assembly using ferrite magnets or the like. The present invention also relates generally to a flux focusing magnetic gear assembly using ferrite magnets or the like that incorporates an outer stator assembly that converts a variable input to a constant output. The present invention further relates generally to an ...
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A magnetic gear system and method for reducing transmission of torque pulsation
Magnomatics Limited
December 08, 2016 - N°20160359441

A system comprises an input member, an output member, a magnetic gear connecting the input member to the output member and control means arranged to control the flow of power from the input member to the output member. The magnetic gear comprises a first set of magnetic poles, a second set of magnetic poles, and a set of pole pieces ...
Gas turbine engine with magnetic gearbox
Rolls-royce North American Technologies, Inc.
September 08, 2016 - N°20160258356

A magnetic gearbox for use in a gas turbine engine includes an inner rotor assembly, a stator assembly, and an outer rotor assembly. The inner rotor assembly includes a first plurality of permanent magnets and an inner rotor. The outer rotor assembly includes an outer rotor and a second plurality of permanent magnets. Each of the inner and outer rotors ...
Magnetic gear device
Hitachi Metals, Ltd.
August 18, 2016 - N°20160241123

Cylindrical outer and inner rotors coaxially supported so as to be rotatable, and a cylindrical stator interposed between the rotors are provided, and rotational torque is transmitted between the outer rotor and the inner rotor by interaction between: a plurality of magnets uniformly arranged on the inner circumference of the outer rotor; a plurality of magnets uniformly arranged on the ...
Heat engine system
Hitachi Metals, Ltd.
June 30, 2016 - N°20160186615

An improved heat engine is disclosed. The heat engine comprises at least one heat pipe containing a working fluid flowing in a thermal cycle between vapor phase at an evaporator end and liquid phase at a condenser end. Heat pipe configurations for high-efficiency/high-performance heat engines are disclosed. The heat pipe may have an improved capillary structure configuration with characteristic ...
A magnetic gear
Ricardo Uk Limited
June 16, 2016 - N°20160172957

A magnetic gear comprising: first and second members arranged for relative movement therebetween, the first member having a first array of magnetic field generating elements and the second member having a second array of magnetic field generating elements; and a coupling member having an array of coupling elements for coupling magnetic flux between the first array of magnetic field generating ...
Magnetic gear device
Ricardo Uk Limited
January 07, 2016 - N°20160006335

The magnetic gear device is equipped with a cylindrical first magnet row in which a plurality of magnetic pole pairs are arranged at substantially equal intervals in a circumferential direction; a cylindrical second magnet row which is arranged coaxially at an outer side of the first magnet row so as to be opposed to the first magnet row and in ...
Magnetic gear system
Jak Research, Llc
September 17, 2015 - N°20150263597

A magnetic gear system for use anywhere gears are required. The magnetic gear system incorporating magnetic gears including at least one end plate and at least one axle coupled to the at least one end plate. A plurality of magnet holders are also coupled to the at least one end plate. At least one magnet is contained in each of ...
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Magnetic gear with first and second members arranged to interact in a magnetically geared manner
Magnomatics Limited
March 12, 2015 - N°20150069871

Embodiments of the present invention relate to magnetic gears comprising first and second moveable members arranged to interact in a magnetically geared manner via a first electrical winding arrangement arranged to generate, at least in part, a first magnetic flux having a first number of pole-pairs, and one or more pole-pieces arranged to modulate the first magnetic flux to interact ...
Electric motor and magnetic gear
Magnomatics Limited
February 05, 2015 - N°20150037180

An electric motor that can be used in driving a compressor and that incorporates a magnetic gear. The motor has high and low speed stators mounted within a motor casing side-by-side that drive coaxial low and high speed rotors also mounted within the motor casing for rotation and within the high and low speed stators. The high and low speed ...
Magnetic gears, and related systems and methods
National Oilwell Varco, L.p.
January 15, 2015 - N°20150018168

A magnetic gear may comprise a first gear member comprising a plurality of permanent magnets arranged to have a first number of magnetic pole pairs and a second gear member positioned relative to the first gear member. The second gear member may comprise a plurality of individually rotatable magnetized elements each driven and synchronized with one another to selectively generate ...
Flywheel
National Oilwell Varco, L.p.
November 13, 2014 - N°20140333397

An apparatus and method are provided for constructing a magnetic gear coupling for transmitting torque from a flywheel to a driveshaft, the coupling employing permanent magnet arrays and magnetic flux coupling elements therebetween, and at least one of the arrays and coupling elements being circumferentially staggered or spread, so as to avoid complete alignment of the arrays and elements, and ...
Magnetic gear arrangement
National Oilwell Varco, L.p.
October 16, 2014 - N°20140306566

A magnetic gear arrangement is provided having a first gear member that generates a first magnetic field and a second gear member that generates a second magnetic field. A plurality of interpoles are disposed between the two gear members for coupling the first and second magnetic fields to control a gear ratio between the gear members. At least one interpole ...
Magnetic gear mechanism with coils around permanently excited magnet poles
National Oilwell Varco, L.p.
August 14, 2014 - N°20140225467

The dynamics of a magnetic gear mechanism are intended to be improved. For this purpose, a magnetic gear mechanism with a stator, a first rotor, which has permanently excited magnet poles (2, 3), and a second rotor, which likewise has permanently excited magnet poles, is proposed. The rotors are magnetically coupled to the stator. In each case one coil (5) is wound around ...
Downhole assembly with magnetic gearbox
National Oilwell Varco, L.p.
August 14, 2014 - N°20140224063

A magnetic change speed gearbox his described for use in a downhole assemblies having a higher speed shaft supported by a gas bearing. The downhole assembly may be one comprising a motor driving a compressor by way of a step-up magnetic gearbox or one comprising a gas turbine driving a pump by way of a step-down magnetic gearbox.
Magnetic gear arrangement having a variable gear ratio
National Oilwell Varco, L.p.
August 07, 2014 - N°20140217838

A magnetic gear arrangement is provided having a magnetically active gear member that generates a first magnetic field, which is modulated by interpoles. The modulated magnetic field generates magnetic poles on a magnetically passive gear member, and these poles form a second magnetic field. The material of the passive gear member is sufficiently magnetically hard that the first and second ...