EP1599930A2 - Elektrische rotationsmaschine bestehend aus einem stator und zwei rotoren - Google Patents

Elektrische rotationsmaschine bestehend aus einem stator und zwei rotoren

Info

Publication number
EP1599930A2
EP1599930A2 EP04717671A EP04717671A EP1599930A2 EP 1599930 A2 EP1599930 A2 EP 1599930A2 EP 04717671 A EP04717671 A EP 04717671A EP 04717671 A EP04717671 A EP 04717671A EP 1599930 A2 EP1599930 A2 EP 1599930A2
Authority
EP
European Patent Office
Prior art keywords
stator
machine according
teeth
rotors
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04717671A
Other languages
English (en)
French (fr)
Inventor
Atef Abou Akar
Eric Coupart
Jacques Saint-Michel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moteurs Leroy Somer SA
Original Assignee
Moteurs Leroy Somer SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moteurs Leroy Somer SA filed Critical Moteurs Leroy Somer SA
Publication of EP1599930A2 publication Critical patent/EP1599930A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present invention relates to electrical machines and more particularly those comprising a stator, an outer rotor and an inner rotor integral with the outer rotor.
  • a machine with two concentric rotors is described in international application WO 91/06147.
  • the stator has teeth provided at their ends with pole shoes.
  • the coils have heads on which a heat transfer fluid such as oil is sprayed in order to dissipate the heat from the coils.
  • a heat transfer fluid such as oil is sprayed in order to dissipate the heat from the coils.
  • Such a machine is relatively complex to manufacture.
  • the electric motor described in application WO 91/06147 also has a relatively large size in the axial direction, due in particular to the presence of the coil heads and the means for cooling them.
  • the subject of the invention is, according to one of its aspects, an electric machine comprising: a stator comprising a plurality of teeth each supporting at least one individual coil, an external rotor disposed radially outside the stator and comprising magnets permanent, and - an inner rotor disposed radially inside the stator, comprising permanent magnets, and integral with the outer rotor.
  • stator teeth minimise to the use of individual coils associated with the stator teeth, rather than distributed coils, the construction of the machine is simplified and its reliability is increased.
  • stator is devoid of a fixed yoke which only serves electrically to re-engage the magnetic flux and which is a source of significant iron losses. Its elimination therefore entails the elimination of these losses and the considerable improvement in efficiency, in particular at high speed.
  • At least one of the outer rotor and the inner rotor is in flux concentration, and preferably the two rotors are in flux concentration, that is to say that two consecutive magnets of a rotor have faces of the same polarity arranged opposite a common adjacent pole piece, disposed between said magnets.
  • This can reduce the amount of magnets used without degrading the performance of the machine.
  • This can also allow the machine to operate at a high speed of rotation, the magnets of the inner rotor being able to be retained by the pole pieces, if necessary.
  • the two rotors have the same number of poles and the two rotors may or may not be offset angularly.
  • the two rotors are advantageously offset by an angle substantially equal to ⁇ / S, for example to within 10%
  • S mp
  • S being the number of stator teeth
  • p being the number of pairs of poles of a rotor
  • the two rotors are advantageously offset by an angle substantially equal to ⁇ / 2S, for example to within 10%.
  • the outer rotor may include pole pieces each having at least one recess on a radially outer side. This can make it possible to lighten the rotor without unduly reducing the efficiency of the machine, the magnetic flux lines being especially concentrated on the radially inner side of the pole pieces of the outer rotor.
  • the pole pieces of the outer rotor can for example pass through a minimum of mid-length section in the circumferential direction.
  • the magnets of at least one of the inner rotor and the outer rotor may have a wedge shape when viewed along the axis of rotation of the machine, of width increasing in distance from the stator. Such a shape of the magnets can allow the pole pieces to hold at a high speed of rotation of the rotor, without it being necessary to glue the magnets for example.
  • the inner rotor comprises pole pieces linked to a machine shaft by complementarity of shapes.
  • the pole pieces of the inner rotor may have grooves and may be engaged by these grooves on ribs of the shaft.
  • Such an arrangement can facilitate the construction of the rotor and in particular make it possible to avoid having to produce the pole pieces with openings making it possible to engage bars independent of the shaft of the machine, for example.
  • At least one of the rotors may include pole pieces disposed between the permanent magnets and each having, on their side facing the stator, a convex convex face towards the stator.
  • pole pieces disposed between the permanent magnets and each having, on their side facing the stator, a convex convex face towards the stator.
  • the stator can have 6n teeth and each of the rotors 6n ⁇ 2 poles, n being greater than or equal to 2. This can make it possible to have a high winding factor, reflecting the efficiency of use of the windings. , and thus a higher efficiency and / or a smaller footprint of the machine.
  • stator teeth may each have a first free end situated opposite one of the rotors.
  • the teeth can be fixed by a second end, opposite the first, on a non-magnetic support.
  • the support may for example be made of non-magnetic steel or aluminum or also of an insulating material.
  • stator teeth may each have two opposite free ends facing the inner and outer rotors, respectively.
  • the teeth can be held for example substantially at mid-length by a non-magnetic support. This support can be generally tabular.
  • Such an arrangement is particularly suitable when each of the stator teeth has two individual coils, which may not be electrically connected to each other, so as to have a stator comprising two independent electrical circuits, if necessary.
  • the stator may alternatively include a cylinder head made in one piece with the teeth.
  • the cylinder head can be made of a magnetic material.
  • stator teeth are devoid of pole shoes, which allows the individual coils to be fixed by engaging them on the teeth, the coils being produced separately.
  • the teeth of the stator may include pole shoes.
  • the stator teeth may have notches near their free end facing one of the rotors.
  • the coils can be held on the teeth by non-magnetic wedges engaged in these notches.
  • the outer rotor can be surrounded by a casing, for example of non-magnetic steel or aluminum, which can be fixed on the shaft of the machine, which is for example of aluminum.
  • a casing for example of non-magnetic steel or aluminum, which can be fixed on the shaft of the machine, which is for example of aluminum.
  • the stator can thus have a double structure, as can the inner rotor or the outer rotor.
  • the machine can constitute a synchronous motor or a generator, or even both successively, and be used for example in an electric vehicle to drive the wheels and recover energy during braking.
  • FIG. 1 is a schematic view in cross section of an example of a machine according to the invention
  • FIG. 2 is a partial and schematic view in axial section of the machine of FIG. 1,
  • FIGS. 11 and 12 represent two examples of variant implementation of the invention
  • - FIGS. 13 and 14 are views similar to FIG. 7 of alternative embodiments of the stator.
  • the electric machine 1 shown in Figures 1 and 2 comprises a stator 10, an inner rotor 20 and an outer rotor 30 integral with each other by means of a mechanical connection 2 between them.
  • the stator 10 comprises a plurality of teeth 11 formed by a stack of magnetic sheets electrically insulated from each other, these teeth being fixed to a support piece 12 made of a non-magnetic material, for example a non-magnetic steel or aluminum, or in an insulating material.
  • the support piece 12 is fixed, in the example described, to a frame 3 of the machine, as shown diagrammatically in FIG. 2.
  • the teeth 11 are fixed by their radially innermost end to the support piece 12, which has a generally tabular shape.
  • the teeth 11 can be fixed by any means to the support piece 12, being for example welded thereto.
  • Each tooth 11 carries an individual coil 13 which comprises one or more electrical conductors wound around the axis of the corresponding tooth.
  • the coils 13 are connected to non-visible electrical conductors.
  • a conventional device makes it possible, in the case where the machine is used as a motor, to generate a rotating magnetic field, and, in the case where the machine is used as a generator, to collect the induced current.
  • the coils 13 can for example be connected to partially stripped cables, as described in patent application EP-A-1 251 623.
  • the teeth 11 are devoid, as can be seen, of pole shoes at their radially outer end, in order to allow the positioning of the coils 13 previously produced.
  • the teeth 11 may have parallel or non-parallel lateral faces, in particular diverging faces away from the external rotor 30, in order for example to allow a certain jamming of the coils 13 on the teeth, as described in patent application EP-A-1 251 623 cited above.
  • the teeth may each have, in the vicinity of their free end, two small notches 14 intended to allow the fixing on the teeth of shims 15 for holding the coils.
  • These shims 15 can be made of insulating material, for example plastic.
  • the inner rotor 20 includes a non-magnetic shaft 21, for example made of aluminum or an alloy of this metal, non-magnetic steel, or a composite material.
  • the shaft 21 has ribs 22 used for the attachment of pole pieces
  • Each rib 22 has in cross section a general shape of T.
  • the pole pieces 23 are not magnetically connected to each other, given the use of a non-magnetic material to make the tree.
  • the pole pieces 23 have a convex and convex face 24 in the direction of the stator 10.
  • Permanent magnets 25 are arranged radially between the pole pieces 23. Each magnet 25 has, when observed along the axis of rotation X of the machine, a slightly wedge-shaped shape, of width decreasing in the direction of the stator 10.
  • Each magnet 25 has transverse magnetization and can be in one piece or consist of several elementary magnets placed end to end.
  • the magnetic poles of the same polarity of two adjacent magnets 25 are directed towards the pole piece 23 situated between these two magnets, as illustrated in FIG. 1.
  • the magnets 25 extend over practically the entire radial dimension of the sides of the pole pieces 23 and in contact with them.
  • the housings formed between the pole pieces 23, and in which the magnets 25 are placed tend to widen under the effect of centrifugal force when the inner rotor 20 rotates at a speed greater than a predetermined speed, taking into account the elasticity of the materials used, this enlargement tending to decrease when the speed of rotation decreases.
  • the inner rotor 20 can be similar to the rotor described in patent application EP-A-1 249 919.
  • the outer rotor 30 comprises permanent magnets 31 placed between pole pieces 32, surrounded by a non-magnetic envelope 33, for example as described in patent application EP-A-1 251 023.
  • the magnets 31 have in the example described a wedge shape when observed along the axis of rotation X of the machine, of width increasing away from the stator.
  • the poles of the two rotors are not angularly offset.
  • Two consecutive magnets 25, 31 of the exterior 30 and interior 20 rotors have faces of the same polarity arranged opposite a common adjacent pole piece 23, 32, disposed between said magnets.
  • Two pole pieces 23, 32 of each of the inner 20 and outer 30 rotors located on the same radius are of opposite N, S polarity.
  • the stator 10 has twelve teeth 11 and twelve coils 13, and each of the rotors has eight poles, but the numbers of teeth or of poles can be different without leaving the framework of the present invention.
  • the pole pieces 32 of the outer rotor 30 have radially inner 32a and outer 32b cylindrical faces. It is not beyond the scope of the present invention if the pole pieces have a different shape.
  • the pole pieces of the outer rotor 30 may for example have a radially inner curved face, convex in the direction of the stator, as shown in FIG. 3.
  • the outer rotor 30 may comprise pole pieces each comprising at least one recess on their radially outer side.
  • FIG. 3 shows an external rotor comprising recesses 34 between each of the pole pieces 32 and the non-magnetic envelope 33.
  • the pole pieces 32 of the outside rotor 30 each pass through a minimum. mid-length in the circumferential direction.
  • the outer rotor 30 could also not have recesses 34 and the pole pieces 32 of the convex convex faces 32a in the direction of the stator, without departing from the scope of the present invention.
  • the permanent magnets 25 and 31 of the inner 20 and outer 30 rotors are generally trapezoidal. It is not beyond the scope of the present invention when the shape of the magnets is different.
  • FIG. 4 there is partially shown in FIG. 4 a machine comprising permanent magnets, of generally parallelepiped shape. It is not beyond the scope of the present invention when the magnets of only one of the two rotors are trapezoidal and the magnets of the other rotor are parallelepiped.
  • the pole pieces 23 of the inner rotor 20 can then include recesses 26 allowing the magnets to be retained between two successive pole pieces.
  • the inner rotor 20 which has just been described with reference to Figures 1 to 3 comprises pole pieces 23 fixed by complementary shapes on ribs 22 of the shaft 21. It is not beyond the scope of the present invention when the pieces poles 23 are fixed in another way to the shaft 21.
  • the pole pieces 23 shown in FIG. 4 are fixed by bars 27 passing through the pole pieces and connected at each of their ends to holding flanges, not shown.
  • the shaft 21 is in this example of generally cylindrical shape.
  • the poles of the inner and outer rotors are not angularly offset.
  • the poles of the two rotors are angularly offset, as shown by way of example in FIG. 5.
  • the poles are offset by an angle ⁇ which may have been deliberately exaggerated for the sake of clarity of the drawing.
  • Such an offset makes it possible to reduce, or even eliminate, the torque pulsations.
  • the number of teeth n teeth of the stator is equal to 12
  • the number of poles of each of the rotors is equal to 8
  • the number of pairs of poles n pa i res being equal to 4
  • FIG. 6 shows a machine comprising twelve teeth and ten poles at each of the rotors.
  • the stator thus has 6n teeth and each of the rotors 6n ⁇ 2 poles, n being equal to 2 in this example, but it is not beyond the scope of the present invention when n is greater than 2.
  • each of the stator teeth carries a single individual coil, but it is not beyond the scope of the present invention when each of the stator teeth carries more than one, and in particular two, individual coils .
  • a stator 40 comprising teeth 41 held substantially at mid-length of their radial edges 42 by a support 43 non-magnetic or made of insulating material or even the combination of both, of closed ring shape on one or both sides.
  • the support 43 can be magnetic.
  • the teeth 41 have free ends 44 and 45 respectively facing the inner rotor 20 and the outer rotor 30, each devoid of pole shoes.
  • Coils 46 and 47 are respectively placed on either side of the support 43 on each tooth 41 to create a magnetic field rotating respectively in the interior and exterior rotors or to recover the current induced by the interior and exterior rotors.
  • the edges 42 of each tooth 41 are parallel but the teeth 41 could, if necessary, have edges 42 which are not parallel, the teeth 41 widening for example in the direction of the support 43 so that the coils 46 and 47 can be engaged on the teeth 41 with a certain clamping effect.
  • the teeth 41 could also have at each of their free ends 44, 45 two small notches intended to allow the fixing on the teeth of shims for holding the coils on the teeth, in a similar manner to what has been described with reference to FIGS. 1 and 2.
  • the teeth are devoid of pole shoes, but it is not going beyond the ambit of the invention if the teeth comprise pole shoes 70 allowing, for example, the fixing of support wedges 71 coils, as shown schematically in Figure 13.
  • the support 43 is shown diagrammatically in FIG. 8. Of generally annular shape, it has openings 48 intended to receive the teeth 41. These can be fixed by any means to the support 43, for example by force, by welding or again by gluing.
  • stator is produced differently.
  • the stator can for example comprise coils 46, 47 placed on a yoke 73 produced integrally with the teeth 41, for example in a magnetic material, as illustrated diagrammatically in FIG. 14.
  • the stator of Figure 14 can be achieved by molding for example, or by stacking sheets. The stator can still be produced differently.
  • stator having teeth 41 having in the middle of their edges 42 notches 50 adapted to receive ends 52 of elements 53 connecting the teeth together.
  • Each of the elements 53 has a generally curved shape, being provided at its ends with reliefs intended to cooperate with the notches 50 to securely hold two successive teeth 41.
  • the elements 53 can be non-magnetic or, alternatively, magnetic.
  • the coils carried by the same tooth can be electrically connected to each other, but it is not beyond the scope of the present invention when the two coils of the same tooth are not electrically connected to each other.
  • the internal and external coils of the stator can form two independent three-phase electric circuits 61 and
  • the two electrical circuits 61 and 62 may or may not have a common neutral point 69 shown in dotted lines, which may or may not be connected to the neutral point 67 of the two step-up or step-down choppers 65 and 66.
  • FIGS. 11 and 12 show other possible configurations.
  • the internal rotor 20 can be connected to the external rotor 30 by a mechanical connection 2 'which extends radially between two parts 10a and 10b of the stator 10, the latter having a double structure.
  • Each part 10a or 10b has teeth each carrying one or two individual coils like what has been described above and the inner and outer rotors each have a double structure also, with respective first parts 20a and 30a intended to cooperate with the part 10a of the stator and of the respective second parts 20b and 30b intended to cooperate with the part 10b of the stator.
  • the stator 10 also has a double structure with two parts 10a and 10b, as do the inner and outer rotors.
  • the parts 10a and 10b of the stator are connected to the frame 3 by means of a mechanical connection 70 connecting to the opposite ends of the parts 10a and 10b of the stator.
  • the part 20a of the inner rotor is connected, by a mechanical connection 2 "similar to that shown in FIG. 2, to the part 30a of the outer rotor and it is the same for the other part 20b of the inner rotor, which is connected by a mechanical connection 2 "to the other part 30b of the outer rotor 30.
  • stator and the interior and exterior rotors are generally symmetrical with respect to a median plane M perpendicular to the axis of rotation X, but this is not compulsory and it is possible without going out of the framework of the present invention to realize double structures with asymmetrical parts.
  • the invention is not limited to the examples which have just been described. One can in particular combine together the characteristics of the various embodiments described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
EP04717671A 2003-03-06 2004-03-05 Elektrische rotationsmaschine bestehend aus einem stator und zwei rotoren Withdrawn EP1599930A2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0302776 2003-03-06
FR0302776A FR2852162B1 (fr) 2003-03-06 2003-03-06 Machine electrique tournante comportant un stator et deux rotors
PCT/FR2004/000530 WO2004082100A2 (fr) 2003-03-06 2004-03-05 Machine electrique tournante comportant un stator et deux rotors

Publications (1)

Publication Number Publication Date
EP1599930A2 true EP1599930A2 (de) 2005-11-30

Family

ID=32865290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04717671A Withdrawn EP1599930A2 (de) 2003-03-06 2004-03-05 Elektrische rotationsmaschine bestehend aus einem stator und zwei rotoren

Country Status (6)

Country Link
US (1) US7250702B2 (de)
EP (1) EP1599930A2 (de)
JP (1) JP2006520178A (de)
CN (1) CN100559685C (de)
FR (1) FR2852162B1 (de)
WO (1) WO2004082100A2 (de)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7081696B2 (en) 2004-08-12 2006-07-25 Exro Technologies Inc. Polyphasic multi-coil generator
JP4461078B2 (ja) * 2005-07-27 2010-05-12 三菱重工業株式会社 風力発電装置
EA201200033A1 (ru) 2006-06-08 2012-05-30 Эксро Технолоджис Инк. Устройство электрического генератора или двигателя
FR2903824A1 (fr) * 2006-07-13 2008-01-18 Leroy Somer Moteurs Rotor de machine tournante electrique et procede de fabrication
US7592736B2 (en) * 2007-01-03 2009-09-22 Terry Scott Permanent magnet electric generator with rotor circumferentially encircling stator
US7642684B2 (en) * 2007-02-15 2010-01-05 Hamilton Sunstrand Corporation Nested variable field dynamoelectric machine
US7956504B2 (en) * 2007-09-13 2011-06-07 Eric Stephane Quere Composite electromechanical machines with gear mechanism
GB0800463D0 (en) * 2008-01-11 2008-02-20 Magnomatics Ltd Magnetic drive systems
US7994674B2 (en) 2008-01-25 2011-08-09 Mcclellan W Thomas Flux-focused shaped permanent magnet, magnetic unit having the magnets, device having the magnetic units and method for asymmetrically focusing flux fields of permanent magnets
JP5241329B2 (ja) * 2008-05-30 2013-07-17 タカタ株式会社 電動機の巻線方法、電動機及びそれを備えたシートベルト装置
GB0814399D0 (en) * 2008-08-08 2008-09-10 Rolls Royce Plc Variable gear ratio magnetic gearbox
FR2935205B1 (fr) 2008-08-20 2010-10-08 Michelin Soc Tech Rotor interieur pour machine electrique tournante et son procede d'assemblage
FR2935206B1 (fr) * 2008-08-20 2010-10-08 Michelin Soc Tech Rotor interieur pour machine electrique a cales d'aimants en forme de "t"
FR2935204B1 (fr) * 2008-08-20 2016-01-01 Michelin Soc Tech Rotor interieur a arbre rainure pour machine electrique tournante
GB0900022D0 (en) * 2009-01-05 2009-02-11 Rolls Royce Plc Management gear arrangement
JP5299679B2 (ja) * 2009-02-06 2013-09-25 株式会社デンソー モータジェネレータ
GB0904434D0 (en) * 2009-03-13 2009-04-29 Switched Reluctance Drives Ltd An electrical machine with dual radial airgaps
GB0905343D0 (en) 2009-03-27 2009-05-13 Ricardo Uk Ltd A flywheel
US8375695B2 (en) * 2009-06-30 2013-02-19 General Electric Company Aircraft gas turbine engine counter-rotatable generator
US8063528B2 (en) * 2009-12-18 2011-11-22 General Electric Company Counter-rotatable generator
US20120299430A1 (en) * 2009-12-22 2012-11-29 Hoganas Ab (Publ) Rotor for modulated pole machine
FR2957729B1 (fr) * 2010-03-19 2013-01-25 Astrium Sas Moteur electrique a aimants permanents comportant un stator fractionne
DE102010027875A1 (de) 2010-04-16 2011-10-20 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement und Verfahren zum Herstellen eines optoelektronischen Bauelements
CN101841280B (zh) * 2010-05-04 2012-06-20 江苏大学 一种应用鼠笼式调磁装置的同心磁力齿轮
GB2483076A (en) * 2010-08-25 2012-02-29 Stored Energy Technology Ltd Electric machine with enhanced tolerance to phase failure
FR2967310B1 (fr) 2010-11-04 2013-08-02 Xap Moteur electromagnetique sans balai
DE102010050545A1 (de) * 2010-11-09 2012-05-10 Agentur Zweitakter Gmbh Wechselstrom-Generator
GB201019473D0 (en) * 2010-11-17 2010-12-29 Ricardo Uk Ltd An improved coupler
US20120169169A1 (en) * 2011-01-05 2012-07-05 Sung-Tsai Wu Kinetic energy supplementary device
JP5722690B2 (ja) 2011-04-19 2015-05-27 Ｔ．Ｋ Ｌｅｖｅｒａｇｅ株式会社 発電装置
GB201106768D0 (en) 2011-04-20 2011-06-01 Ricardo Uk Ltd An energy storage system
US8796895B2 (en) * 2011-05-26 2014-08-05 Lg Electronics Inc. Electric motor and electric vehicle having the same
JP2013062889A (ja) * 2011-09-10 2013-04-04 Nidec Servo Corp ブラシレスｄｃモータ
CN202524184U (zh) * 2012-03-05 2012-11-07 德昌电机(深圳)有限公司 永磁电机及应用该永磁电机的无叶风扇
US9343931B2 (en) * 2012-04-06 2016-05-17 David Deak Electrical generator with rotational gaussian surface magnet and stationary coil
US9136736B2 (en) * 2012-06-06 2015-09-15 Nidec Motor Corporation Motor having spoked outer rotor with spaced apart pole segments
US10326322B2 (en) * 2012-08-20 2019-06-18 Rensselaer Polytechnic Institute Double-rotor flux-switching machine
EP4112915A1 (de) * 2012-11-30 2023-01-04 Yamaha Hatsudoki Kabushiki Kaisha Motoreinheit und fahrzeug
KR101497502B1 (ko) * 2013-02-19 2015-03-03 (주) 코모텍 전동기 및 전동기 제조방법
JP5647307B1 (ja) * 2013-06-04 2014-12-24 成田　憲治 直流励磁界磁型同期電動機
ES2543690B1 (es) * 2014-02-21 2016-03-17 José María DEL PINO PÉREZ Turbina de generación magnética
CN106461055B (zh) * 2014-05-20 2018-10-09 株式会社Ihi 磁波齿轮装置
EP3007336B1 (de) * 2014-10-07 2016-11-30 C.R.F. Società Consortile per Azioni Elektrische Synchronmaschine mit zwei Rotoren
US20160329789A1 (en) * 2015-05-08 2016-11-10 Johnson Electric S.A. Single-phase Outer-rotor Motor And Rotor Thereof
JP6820090B2 (ja) * 2015-07-21 2021-01-27 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 洗濯機、および、そのモータ
KR102595183B1 (ko) * 2015-07-21 2023-10-30 삼성전자주식회사 세탁기용 모터, 및 이를 구비한 세탁기
CN106100268A (zh) * 2016-08-23 2016-11-09 江西韵动新能源研究院有限公司 一种内外双转子永磁电机
MX2019012806A (es) 2017-05-23 2020-01-20 Dpm Tech Inc Configuracion de sistema de control de bobina variable, aparato y metodo.
CN107317445A (zh) * 2017-06-23 2017-11-03 贵州宝文电机科技有限公司 多层轮毂电机及轮毂
CN107551848B (zh) * 2017-10-16 2023-05-19 上海弗鲁克科技发展有限公司 高粘度组合式工作头
CN111819770B (zh) 2017-10-30 2023-09-19 威能科技有限责任公司 磁动量传递式发电机
WO2019125006A1 (en) * 2017-12-20 2019-06-27 Samsung Electronics Co., Ltd. Motor
UA124412C2 (uk) 2017-12-22 2021-09-15 Євгеній Віталійович Мушинський Контрроторний синхронний електромеханічний перетворювач
US10944302B2 (en) * 2018-04-09 2021-03-09 Williams International Co., L.L.C. Permanent-magnet generator incorporating a variable-reluctance stator system
FR3083386B1 (fr) * 2018-06-28 2021-05-14 Telma Ensemble ralentisseur electromagnetique et generatrice et vehicule comportant un tel ensemble
JP2022517575A (ja) 2019-01-09 2022-03-09 グリーン ウェイヴ パワー システムズ リミテッド ライアビリティ カンパニー 永久磁石非対称場を摂動させて物体を移動させるためのシステム及び方法
US11732769B2 (en) 2019-01-09 2023-08-22 Green Wave Power Systems Llc Magnetically-coupled torque-assist apparatus
WO2020146594A1 (en) 2019-01-09 2020-07-16 Green Wave Power Systems Llc Magnetically-coupled torque-assist apparatus
CA3137550C (en) 2019-04-23 2024-05-21 Dpm Technologies Inc. Fault tolerant rotating electric machine
US11973391B2 (en) 2019-11-21 2024-04-30 Wepower Technologies Llc Tangentially actuated magnetic momentum transfer generator
CN112311174A (zh) * 2020-05-29 2021-02-02 深圳市一吉制造有限公司 一种新型四定子四转子的组合节能电机
CN112311175A (zh) * 2020-05-29 2021-02-02 深圳市一吉制造有限公司 一种新型两定子四转子的组合节能电机
CA3217299A1 (en) 2021-05-04 2022-11-10 Tung Nguyen Battery control systems and methods
CN117337545A (zh) 2021-05-13 2024-01-02 Exro技术公司 驱动多相电机的线圈的方法及装置
WO2023055911A1 (en) 2021-09-30 2023-04-06 Green Wave Power Systems Llc System and method for generating rotation of a body to generate energy and reduce climate change
WO2023123639A1 (zh) * 2021-12-29 2023-07-06 大富科技(安徽)股份有限公司 电机结构、轮毂电机以及车辆

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11341757A (ja) * 1998-05-21 1999-12-10 Toyota Motor Corp 電動機および動力伝達装置並びにハイブリッド車両

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914859A (en) * 1974-01-17 1975-10-28 Ray T Pierson Method of fabricating closed slot stator construction particularly adapted for stepper motors
FR2356301A1 (fr) * 1976-06-21 1978-01-20 Kumakura Shokichi Ensemble magnetique annulaire pour generatrice dynamo-electrique
JPS60156231A (ja) * 1984-01-25 1985-08-16 Japan Servo Co Ltd 回転電機の固定子
FR2653274B1 (fr) 1989-10-16 1995-04-28 Auxilec Perfectionnement au moteur electrique du type moteur a courant continu sans balai.
RU2074761C1 (ru) * 1995-06-29 1997-03-10 Научно-производственное предприятие "Эксин" Приводное устройство для передвижных средств
JP2000134848A (ja) * 1998-10-26 2000-05-12 Aisin Seiki Co Ltd 電動機
JP2000156947A (ja) * 1998-11-17 2000-06-06 Yukio Kinoshita 磁石式電動機及び発電機
JP2001268866A (ja) * 2000-03-15 2001-09-28 Denso Corp 車両用回転電機
US6590312B1 (en) * 1999-11-18 2003-07-08 Denso Corporation Rotary electric machine having a permanent magnet stator and permanent magnet rotor
JP2001145209A (ja) * 1999-11-18 2001-05-25 Denso Corp 車両用回転電機
JP4000746B2 (ja) * 2000-03-29 2007-10-31 株式会社デンソー 車両用回転電機
JP2001211582A (ja) * 2000-01-26 2001-08-03 Fujitsu General Ltd 永久磁石電動機
US6891299B2 (en) * 2000-05-03 2005-05-10 Moteurs Leroy-Somer Rotary electric machine having a flux-concentrating rotor and a stator with windings on teeth
DE20107523U1 (de) 2000-05-03 2001-07-12 Leroy Somer Moteurs Umlaufende elektrische Maschine mit einem Rotor mit Flußkonzentration und einem Stator mit bewickelten Zähnen
JP4269544B2 (ja) * 2000-09-14 2009-05-27 株式会社デンソー 複数ロータ型同期機
US6611076B2 (en) * 2000-12-20 2003-08-26 Solar Turbines Inc. Tooth tip for a high speed generator
JP2002315243A (ja) * 2001-04-13 2002-10-25 Hitachi Ltd 永久磁石式回転電機
US20020171305A1 (en) 2001-04-17 2002-11-21 Moteurs Leroy-Somer Electric machine having an outer rotor
EP1251023B1 (de) 2001-04-17 2004-11-17 Moteurs Leroy-Somer Elektrische Maschine mit äusserem Läufer
US6700288B2 (en) * 2001-08-15 2004-03-02 Drs Power & Control Technologies, Inc. High speed rotor
JP3671884B2 (ja) * 2001-08-30 2005-07-13 日産自動車株式会社 回転電機
US6727632B2 (en) * 2001-11-27 2004-04-27 Denso Corporation Flat rotary electric machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11341757A (ja) * 1998-05-21 1999-12-10 Toyota Motor Corp 電動機および動力伝達装置並びにハイブリッド車両

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US7250702B2 (en) 2007-07-31
WO2004082100A2 (fr) 2004-09-23
US20060175923A1 (en) 2006-08-10
FR2852162B1 (fr) 2005-09-23
CN1757151A (zh) 2006-04-05
FR2852162A1 (fr) 2004-09-10
CN100559685C (zh) 2009-11-11

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