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WO2011116776A1 - Rotor de machine électrique à aimants permanents à vitesse de rotation élevée - Google Patents

Rotor de machine électrique à aimants permanents à vitesse de rotation élevée Download PDF

Info

Publication number
WO2011116776A1
WO2011116776A1 PCT/EA2011/000003 EA2011000003W WO2011116776A1 WO 2011116776 A1 WO2011116776 A1 WO 2011116776A1 EA 2011000003 W EA2011000003 W EA 2011000003W WO 2011116776 A1 WO2011116776 A1 WO 2011116776A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole plates
permanent magnets
rotor
disks
modulus
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.)
Ceased
Application number
PCT/EA2011/000003
Other languages
English (en)
Russian (ru)
Inventor
Алексей Сергеевич АДАЛЕВ
Андрей Васильевич ИВАНОВ
Алексей Сергеевич КИБАРДИН
Владимир Георгиевич КУЧИНСКИЙ
Владимир Федорович СОЙКИН
Андрей Михайлович ЧИЖОВ
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.)
RESEARCH AND PRODUCTION ASSOCIATION "RUSSIAN ELECTRIC DRIVE" OPEN JOINT STOCK Co
Original Assignee
RESEARCH AND PRODUCTION ASSOCIATION "RUSSIAN ELECTRIC DRIVE" OPEN JOINT STOCK Co
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 RESEARCH AND PRODUCTION ASSOCIATION "RUSSIAN ELECTRIC DRIVE" OPEN JOINT STOCK Co filed Critical RESEARCH AND PRODUCTION ASSOCIATION "RUSSIAN ELECTRIC DRIVE" OPEN JOINT STOCK Co
Publication of WO2011116776A1 publication Critical patent/WO2011116776A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H02K1/2706—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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets

Definitions

  • the present invention relates to electrical engineering, namely to the rotors of electric machines with excitation from permanent magnets.
  • Permanent magnet rotors are known in the art.
  • This rotor design also has several disadvantages.
  • the pole wedging is weakened and loosened. This leads to an imbalance. and increase vibration and, accordingly, reduce the life of the machine.
  • Another disadvantage of this design is the limited mechanical strength of the pole mount. A centrifugal force acts on the pole and the pole is held by the lock shank. The cross section of the shank works to break and is smaller in size than the cross section of the pole itself. Therefore, the mechanical strength of the joint is determined by the strength of the material of the shank, the mechanical strength of which is limited. This, in turn, limits the speed of rotation, and leads to a limit on the maximum diameter of the rotor and, accordingly, on the maximum power of the machine.
  • this design option has a great complexity of manufacturing associated with the manufacture of additional exact pairs of wedges and performing a rather laborious operation to wedge the poles, which accordingly leads to an increase in the cost of the machine.
  • the dimensions of the locks become small due to limited space, and it is simply not possible to make a high-quality splitting due to the low stiffness of the lock.
  • the upper part of the pole is advantageously made of laden iron, which leads to a decrease in the magnitude of the eddy currents in the surface layer.
  • the level of attainable speeds is also limited and, accordingly, the power level of the machine is limited
  • the rotor of the electric machine of the present invention is devoid of the above disadvantages and at the same time solves additional problems.
  • One of the tasks is to increase the reliability of the rotor design and to ensure the possibility of its use at higher speeds.
  • the present invention also aims to reduce the size and increase the maximum rotational speed of the rotor.
  • the proposed rotor of an electric machine contains a shaft on which prefabricated disks with permanent magnets are fixed.
  • - prefabricated discs contain central rings made of durable non-magnetic steel, with pole plates made of durable steel attached to them magnetic steel, ending with lugs made of lined electrical steel,
  • pole plates are fixed to the disks by means of locks, have a rigid connection along the contour of the castle with the disks and form wedge-shaped gaps with a base to the center of the disk between the end faces of adjacent pole plates facing each other,
  • thin spacers of material having a modulus of elasticity less than the elastic moduli of the material of the pole plates and the permanent magnets are installed.
  • the central rings of the prefabricated discs have a relative magnetic permeability ranging from 1, 05 to 1, 1.
  • the lock is preferably a dovetail joint.
  • a rigid connection of the pole plates to the disks can be performed using welding, and the ratio of the elastic modulus of the material of permanent magnets to the modulus of elasticity of the material of the spacers is from 2 to 3.
  • the proposed rotor design provides reliable and safe operation at high rotor speeds due to the reduction of mechanical stresses in the rotor design (in particular, in permanent magnets) due to the use of gaskets with a lower modulus of elasticity compared to surrounding elements.
  • the rotor is made of dissimilar materials having different magnetic properties, it becomes possible to optimize the magnetic fluxes passing in the rotor, due to which it is possible, on the one hand, to reduce the size of the rotor and, on the other hand, to increase the speed of rotation.
  • FIG. 1 is a schematic cross-sectional view of a possible embodiment of a rotor of a machine of the present invention.
  • FIG. 2 is a schematic longitudinal sectional view of an exemplary embodiment of a rotor of a machine of the present invention.
  • FIG. 3 schematically shows a cross section of the rotor zone, where the permanent magnets are placed.
  • FIG. 1 shows the rotor of an electric machine having a shaft 1 on which prefabricated disks 2 are mounted with permanent magnets 3 made in the form of blocks.
  • Prefabricated disks 2 consist of a central part made in the form of a ring 4, on the outer surface of which locks 5 are made, in one of the dovetail variants. Rings 4 are installed on the shaft 1 by press fit. Pole plates 6 are installed in each lock 5 and are rigidly connected along the lock contour, for example by welding. The pole plates b in the circumferential direction form trapezoidal air grooves and also have locks on the outer part, in this example also of the “dovetail” 7 type, into which the tips 8 are installed by pressing fit.
  • the central rings of the prefabricated disks are made of durable non-magnetic steel, relative the magnetic permeability of which is preferably in the range from 1, 05 to 1, 1.
  • the pole plates are made of strong magnetic steel, and the tips 8 are assembled from sheet electrical steel coated with electrical insulating varnish, and these sheets, as can be seen in the longitudinal section of the rotor in FIG. 2, glued together.
  • the thickness of the plates of the tips 8 is equal to the thickness of the plates of the disks 2.
  • blocks of permanent magnets 3 are installed having a similar trapezoidal shape. Between the lateral sides of the block of permanent magnets 3 and the grooves of the pole plates 6 are gaskets 9 (see Fig. 3).
  • the mechanical strength of the rotor under the action of centrifugal loads arising from the rotation of the rotor is provided as follows.
  • the tips 8 are held by the lock 7 located in the pole plate 6.
  • the pole plates 6 are held by the lock 5, which is located in the disk 2.
  • the disk 2 holds the elements of the magnetic system fixed on it due to the strong steel of the ring 4 and provides the general mechanical strength of the rotor.
  • tips 8 on a press fit along the entire contour of the lock creates a sealing effect and is equivalent in rigidity to the lock with a rasklinkovka, which allows not to use a wedge pair. This simplifies the design of the attachment of the tip and increases its reliability.
  • the implementation of the disk 2 from dissimilar materials allows you to: - to eliminate the passage of shunting the main magnetic flux of magnetic flux along the ring 4 and shaft 1 due to the implementation of the disk 2 from non-magnetic high-strength steel;
  • a lock 5 for example, in the form of a hammer head
  • the shank head in the groove of the ring 4 is installed on a hot landing and is then welded along the interface to the disk.
  • Welding provides a rigid fastening of the pole plate b with the disk 2, increases the rigidity and strength of the lock 5 and thereby reduces the level of mechanical stresses in the lock 5. This allows to increase the speed of rotation of the rotor and, accordingly, increase the power of the machine.
  • the proposed solution completely eliminates the possibility of loosening the castle, there is no need for a pair of wedges and a wedging of the castle, which simplifies the design of the castle and reduces the cost of its manufacture.
  • the lock 5 becomes small-sized and allows it to be used for high-speed rotors, which are limited in size due to the limited mechanical strength of the materials.
  • this part of the magnetic circuit is made of lined electrical steel.
  • the ratio of the modulus of elasticity of the material of the permanent magnets to the modulus of elasticity of the material of the gaskets is from 2 to 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un rotor de machine électrique comprenant un arbre sur lequel sont fixés des disques avec des aimants permanents. Le rotor se distingue en ce que les disques assemblés comprennent des anneaux centraux faits en acier non magnétique solide avec des plaques polaires en acier magnétique solide, qui se terminent par des embouts en acier électrotechnique feuilleté. Les plaques polaires sont fixées sur les disques au moyen de verrous, possèdent une connexion rigide en suivant le contour du verrou avec les disques et forment des entrefers en coin dont la base est tournée vers le centre du disque entre les bords d'extrémité des plaques polaires voisines, orientés les uns vers les autres. Les aimants permanents sont montés le long de l'axe du rotor dans les entrefers entre plaques polaires. Des couches intermédiaires sont placées entre les faces latérales des aimants permanents et les entailles des plaques polaires; ces couches minces sont faites d'un matériau dont le module d'élasticité est inférieur aux modules d'élasticité du matériau dont sont fait les plaques polaires et les aimants permanents.
PCT/EA2011/000003 2010-03-22 2011-03-18 Rotor de machine électrique à aimants permanents à vitesse de rotation élevée Ceased WO2011116776A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EA201000632 2010-03-22
EA201000632A EA014510B1 (ru) 2010-03-22 2010-03-22 Высокооборотный ротор с постоянными магнитами электрической машины

Publications (1)

Publication Number Publication Date
WO2011116776A1 true WO2011116776A1 (fr) 2011-09-29

Family

ID=43531312

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EA2011/000003 Ceased WO2011116776A1 (fr) 2010-03-22 2011-03-18 Rotor de machine électrique à aimants permanents à vitesse de rotation élevée

Country Status (2)

Country Link
EA (1) EA014510B1 (fr)
WO (1) WO2011116776A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20110587A1 (it) * 2011-10-17 2013-04-18 Spal Automotive Srl Rotore per macchina elettrica e relativo procedimento di assemblaggio
CN103107665A (zh) * 2011-11-11 2013-05-15 德昌电机(深圳)有限公司 永磁电机及应用该永磁电机的电动工具和割草机
US9331531B2 (en) 2012-10-17 2016-05-03 Eocycle Technologies Inc. Method of manufacturing a transverse flux electrical machine rotor
US9419486B2 (en) 2012-09-24 2016-08-16 Eocycle Technologies Inc. Housing less transverse flux electrical machine
US9722479B2 (en) 2012-08-03 2017-08-01 Eocycle Technologies Inc. Wind turbine comprising a transverse flux electrical machine
WO2024161141A1 (fr) * 2023-02-02 2024-08-08 Moog Controls Ltd. Moteur à courant continu sans balais destiné à être utilisé à des températures élevées

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9831727B2 (en) 2012-10-15 2017-11-28 Regal Beloit America, Inc. Permanent magnet rotor and methods thereof
US9099905B2 (en) 2012-10-15 2015-08-04 Regal Beloit America, Inc. Radially embedded permanent magnet rotor and methods thereof
US9362792B2 (en) * 2012-10-15 2016-06-07 Regal Beloit America, Inc. Radially embedded permanent magnet rotor having magnet retention features and methods thereof
US9246364B2 (en) 2012-10-15 2016-01-26 Regal Beloit America, Inc. Radially embedded permanent magnet rotor and methods thereof
US9882440B2 (en) 2012-10-15 2018-01-30 Regal Beloit America, Inc. Radially embedded permanent magnet rotor and methods thereof
GB2600011B (en) 2016-01-13 2022-10-05 Magnomatics Ltd Magnetic gearing with damping material in rotor
DE102016209174B4 (de) * 2016-05-25 2024-10-24 Vitesco Technologies GmbH Rotor
RU2657003C1 (ru) * 2017-04-26 2018-06-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Магнитная система ротора синхронного двигателя с инкорпорированными магнитами (варианты)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013157A1 (fr) * 1978-12-26 1980-07-09 The Garrett Corporation Rotors à aimant permanent, notamment pour machines dynamo-électriques
US4588914A (en) * 1984-06-05 1986-05-13 Westinghouse Electric Corp. Permanent magnet rotor for high speed motors and generators
US5952755A (en) * 1997-03-18 1999-09-14 Electric Boat Corporation Permanent magnet motor rotor
US20070247013A1 (en) * 2006-04-20 2007-10-25 Canopy Technologies, Llc Aerodynamic insert for high speed permanent magnet motor
RU2007132617A (ru) * 2007-08-29 2009-03-10 Дальневосточный государственный технический университет (RU) Ротор электрогенератора

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013157A1 (fr) * 1978-12-26 1980-07-09 The Garrett Corporation Rotors à aimant permanent, notamment pour machines dynamo-électriques
US4588914A (en) * 1984-06-05 1986-05-13 Westinghouse Electric Corp. Permanent magnet rotor for high speed motors and generators
US5952755A (en) * 1997-03-18 1999-09-14 Electric Boat Corporation Permanent magnet motor rotor
US20070247013A1 (en) * 2006-04-20 2007-10-25 Canopy Technologies, Llc Aerodynamic insert for high speed permanent magnet motor
RU2007132617A (ru) * 2007-08-29 2009-03-10 Дальневосточный государственный технический университет (RU) Ротор электрогенератора

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20110587A1 (it) * 2011-10-17 2013-04-18 Spal Automotive Srl Rotore per macchina elettrica e relativo procedimento di assemblaggio
WO2013057673A3 (fr) * 2011-10-17 2014-12-04 Spal Automotive S.R.L. Rotor conçu pour une machine électrique et procédé d'assemblage correspondant
US9543795B2 (en) 2011-10-17 2017-01-10 SPAL AUTOMATIVE S.r.l. Rotor for an electrical machine and relative assembly method
CN103107665A (zh) * 2011-11-11 2013-05-15 德昌电机(深圳)有限公司 永磁电机及应用该永磁电机的电动工具和割草机
US9755492B2 (en) 2012-08-03 2017-09-05 Eocycle Technologies Inc. Rotatable transverse flux electrical machine
US9722479B2 (en) 2012-08-03 2017-08-01 Eocycle Technologies Inc. Wind turbine comprising a transverse flux electrical machine
US9559560B2 (en) 2012-09-24 2017-01-31 Eocycle Technologies Inc. Transverse flux electrical machine stator phases assembly
US9559559B2 (en) 2012-09-24 2017-01-31 Eocycle Technologies Inc. Transverse flux electrical machine stator with stator skew and assembly thereof
US9559558B2 (en) 2012-09-24 2017-01-31 Eocycle Technologies Inc. Modular transverse flux electrical machine assembly
US9419486B2 (en) 2012-09-24 2016-08-16 Eocycle Technologies Inc. Housing less transverse flux electrical machine
US9331531B2 (en) 2012-10-17 2016-05-03 Eocycle Technologies Inc. Method of manufacturing a transverse flux electrical machine rotor
US9876401B2 (en) 2012-10-17 2018-01-23 Eocycle Technologies Inc. Transverse flux electrical machine rotor
WO2024161141A1 (fr) * 2023-02-02 2024-08-08 Moog Controls Ltd. Moteur à courant continu sans balais destiné à être utilisé à des températures élevées

Also Published As

Publication number Publication date
EA201000632A1 (ru) 2010-12-30
EA014510B1 (ru) 2010-12-30

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