WO2011116777A1 - Machine électrique à aimants permanents - Google Patents

Machine électrique à aimants permanents Download PDF

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Publication number
WO2011116777A1
WO2011116777A1 PCT/EA2011/000004 EA2011000004W WO2011116777A1 WO 2011116777 A1 WO2011116777 A1 WO 2011116777A1 EA 2011000004 W EA2011000004 W EA 2011000004W WO 2011116777 A1 WO2011116777 A1 WO 2011116777A1
Authority
WO
WIPO (PCT)
Prior art keywords
plates
permanent magnets
pole
sector
packages
Prior art date
Application number
PCT/EA2011/000004
Other languages
English (en)
Russian (ru)
Inventor
Алексей Сергеевич АДАЛЕВ
Сергей Алексеевич БУЛГАКОВ
Алексей Сергеевич КИБАРДИН
Владимир Георгиевич КУЧИНСКИЙ
Владимир Федорович СОЙКИН
Андрей Михайлович ЧИЖОВ
Original Assignee
Открытое Акционерное Общество "Научно-Производственное Объединение "Русский Электропривод"
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 Открытое Акционерное Общество "Научно-Производственное Объединение "Русский Электропривод" filed Critical Открытое Акционерное Общество "Научно-Производственное Объединение "Русский Электропривод"
Publication of WO2011116777A1 publication Critical patent/WO2011116777A1/fr

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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

Definitions

  • the present invention relates to electrical engineering, namely to multiphase electric machines with excitation from permanent magnets.
  • the prior art electric generator (EP1 508955 A1, N02K 21/16, 02/23/2005), which contains a stator with a magnetic circuit and a multiphase winding; and a rotor comprising a continuous magnetically conducting cylinder with inclined slots in which permanent magnets are mounted.
  • the rotor poles located between the permanent magnets are turned towards the air gap and are mechanically connected to each other in the direction of the circumference of the rotor by bridges of the material of the cylinder. These jumpers perceive centrifugal forces acting on the poles and permanent magnets.
  • the presence of a magnetically conducting jumper causes the presence of magnetic fluxes of dispersion, closing through the jumpers and not passing through the air gap of the machine, which reduces the magnitude of the main magnetic flux passing through the air gap of the machine. To reduce these flows, it is necessary to reduce the cross-section of the jumper, which weakens the mechanical fastening of the poles and permanent magnets and limits the possible speed of rotation of the rotor and, thus, the achieved power of the generator.
  • the presence of scattering fluxes reduces the efficiency of the machine, determines the need to compensate for the loss of magnetic flux by increasing the length of the rotor or the diameter of the rotor, which in turn leads to an increase in the mass of the machine and its cost.
  • a multi-phase electric machine with permanent magnets (EP 010775 B1, H02K 21/12, 2008.10.30), which contains an explicit pole rotor formed by a power ring and a magnetic system including packages sector plates with recesses in which packages of pole plates are arranged in the shape of a triangle, one of the vertices of which faces the power ring, and tangentially magnetized magnetic blocks located between the packages of sector and pole plates.
  • Each package of pole plates is axially tightened by means of a fastener passed through an internal hole in the pole plates.
  • Each pole plate has a slot for connecting through it the fastening element of the pole plate with the profile element.
  • Fixing of independent structural units and packages of sector plates on the power ring is carried out by means of wedges installed between independent structural units.
  • Each wedge is connected by pins with a power ring.
  • the studs are fastened with an axial bar rigidly mounted on the power ring.
  • This design also has several disadvantages.
  • the presence of a mounting element of the pole plate connected to the profile element, and studs connecting the wedges with the power ring, determine the need for the formation of air gaps between the corners of the magnetic blocks, which leads to the appearance of spurious magnetic fluxes that are closed between the ends of the permanent magnets and do not pass through the air gap , this accordingly leads to a decrease in the efficiency of the machine.
  • In the case of ensuring the required machine parameters (power) due to reduced efficiency this leads to an increase in either the length of the magnetic circuit of the rotor and stator, or the diameter of the bore of the rotor and stator, which ultimately leads to an increase in the mass of the machine and its cost.
  • the electric machine of the present invention is devoid of the above disadvantages and at the same time solves the additional tasks.
  • the proposed design provides reliable and safe operation for relatively low-speed machines. ' Additionally, an increase in the manufacturability of the assembly of the proposed electric machine is implemented, the configuration and the number of elements of the nodes of the rotor magnetic system and, accordingly, the manufacturing cost and the cost of the machine as a whole are simplified.
  • the proposed electric machine contains an explicit pole stator with coils, an explicit pole rotor formed by a power ring and a magnetic system consisting of packages of sector and pole plates and tangentially magnetized permanent magnets.
  • the packages of pole plates are axially tightened through the pressure plates, by means of a fastener passed through the internal hole in the pole and pressure plates, and the packages of sector plates are assembled on swallow-tail planks and fastened to the power ring using fasteners.
  • An electric machine is characterized in that each package of sector plates, together with permanent magnets closely adjacent to it on both sides, is covered by a power brace made of insulating material, forming a sector block, and in the area of the strap fasteners to the power ring, there is no insulating brace.
  • a profile strip of non-magnetic material is installed between the ends of the permanent magnets facing the air gap, and each package of pole plates is located between two adjacent sector blocks, is tightly adjacent to the side faces of the sector blocks, and is fastened to the power ring by fasteners fastened to end pressure plates of this package.
  • the shape of the surface of the force ring at the junctions of the packages of sector plates with the force ring preferably has the form of a flat surface.
  • Permanent magnets in the preferred embodiment are made in the form of magnetic blocks consisting of several permanent magnets.
  • FIG. 1 is a schematic longitudinal sectional view of an exemplary embodiment of an electric machine of the present invention.
  • FIG. 2 is a schematic cross-sectional view of an exemplary embodiment of an electric machine of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a rotor portion of an exemplary embodiment of the electric machine of FIG. 2.
  • FIG. 4 is a schematic longitudinal section of a portion of the rotor of FIG. one. Information confirming the possibility of carrying out the invention
  • the electric machine has a housing 1, on the ends of which end shields are installed 2.
  • a stator 3 is installed, consisting of a magnetic circuit 4, having distinct poles and coils 5, laid in grooves of the magnetic circuit 4 and forming a multiphase winding.
  • a rotor 6 is installed, consisting of a shaft in the form of two shanks 7, a magnetic system 8 and bearing bearings 9 installed in the end shields 2.
  • the magnetic system 8 of the rotor 6 is mounted on a power ring 10, which is mounted on the shanks 7.
  • the magnetic system 8 of the rotor 6 consists of packages of sector plates 1 1, packages of pole plates 12 made of laden iron, and tangentially magnetized magnetic blocks 13.
  • the magnetic blocks 13 used in the present case as permanent magnets there can be "employed monolithic elements made of magnetic material.
  • Packages pole plates 12 are tightened in the axial direction via the push plate 14 fastening element 15, such as pins, passed through the inner up responses
  • a power bandage 18 made of insulating material, forming a sector block 19.
  • a profile strip 20 made of non-magnetic material is installed, and each package of pole plates 12 is located between two adjacent sector blocks 19 and fit snugly to the side faces of the sector blocks 19.
  • the packages of pole plates 12 are mounted on the power ring 10 using fasteners 21 connecting the pressure plates 14 to the power ring 10.
  • the surface shape of the force ring 10 at the interface between the packages of sector plates 1 1 and the force ring 10 has the form of a flat surface 22.
  • the fastening elements 15, 17 of the nodes of the rotor magnetic system 8, which receive the centrifugal forces acting on the nodes of the magnetic system 8, are placed so that the magnetic blocks at the corners are as close as possible to each other. This ensures the maximum reduction in the magnitude of magnetic fluxes of scattering, shunting the main magnetic flux, and thereby increases the main magnetic flux in the air gap created in the air working gap, which accordingly increases the efficiency of the machine, allows for smaller machine sizes and, accordingly, to reduce the cost of the product.
  • a package of sector plates 1, magnetic blocks 13, strap 6 are covered by a power brace 17.
  • the power brace 18 In order for the power brace 18 to be in tension, which ensures strong mechanical fastening of these elements, it is structurally advisable in the area of the ends of the magnetic blocks 13 facing both toward the air gap and towards the power ring 10 to install the strap 16 appropriate form.
  • the power bandage 18 is made of highly durable material, for example, from an electrically insulating tape LSS-F.
  • a power bandage 18 made of an electrical insulating tape makes it possible to eliminate the induced Foucault currents in it when an alternating magnetic flux passes through the magnetic system of the rotor and the corresponding heat losses in the case of these currents flowing through the power bandage 18, which leads to the absence of a decrease in machine efficiency. Since the package of sector plates is fixed to the power ring using fasteners, the magnetic blocks fixed with the help of a power bandage on the packages of sector plates are also held by these elements in their position under the action of centrifugal forces.
  • the packages of pole plates 12 are glued together and are pulled together in the axial direction to form a single mechanical block, behaving as a monolithic element.
  • This makes it possible to limit the fastening of the package of pole plates through the pressure plates 14 (along the edges of the package) to the power ring 10.
  • This fastening makes it possible to bring the magnetic blocks 13 together as close as possible, eliminate the magnetic fluxes of scattering shunting the main magnetic flux, increase the efficiency of the machine, and simplify the geometric shape package of pole plates 12, to simplify the design of the magnetic system of the rotor, reduce the complexity of manufacturing and, accordingly, the cost of the machine.
  • centrifugal loads are retained acting on the elements of the rotor magnetic system 8 by securing them on the power ring 10.
  • the simplest way to create oblique grooves for machines with permanent magnets is to create, for example, by milling, on the surface of the power ring a multifaceted surface in which the faces have the shape of a flat surface.
  • This allows you to perform the elements of the magnetic system of the rotor in the form of rectilinear elements and to form an oblique direction to install them on the power ring of the rotor at an angle to the longitudinal axis of the machine.
  • the manufacture of elements of the magnetic system of the rotor of a rectilinear shape significantly reduces the complexity of their manufacture in comparison with their execution in a helical form.
  • the operation of the electric machine is as follows.
  • the stator coils which are interconnected as needed, are supplied with AC voltage, and a current begins to pass through them, the amplitude of which varies in time according to the required law.
  • the flowing current and the magnetic field interact, which is determined by the sum of the fields created by the flowing current and permanent magnets, a rotating electromagnetic moment arises, driving the motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention porte sur une machine électrique possédant un stator à pôle saillant avec des bobines, un rotor à pôle saillant formé par un anneau de force et un système magnétique constitué de piles de plaques à segments et polaires et d'aimants permanents à aimantation tangentielle. Les piles de plaques polaires sont serrées dans une direction axiale via des plaques de serrage grâce à un élément de fixation passant par un orifice intérieur dans les plaques de serrage et polaires, et les piles de plaques à segments sont montées sur des planches en queue d'aronde fixées sur la anneau de force au moyen des éléments de fixation. La machine électrique proposée se distingue en ce que chaque pile de plaques à segments avec les aimants permanents qui y adhèrent des deux côtés est entourée par un bandage de force en matériau électriquement isolant de manière à former un bloc de segments; dans la zone des éléments de fixation de la planche à l'anneau de force, le bandage électriquement isolant est absent. Dans cette invention, entre les extrémités des aimants permanents tournés vers l'entrefer on a monté une planche profilée en matériau non magnétique, et chaque pile de plaques polaires est disposée entre deux blocs de segments adjacent et adhère fermement aux côtés latéraux des blocs de segments; il est fixé sur l'anneau de force avec des éléments de fixation solidarisés avec les plaques de serrage d'extrémité de la pile en question.
PCT/EA2011/000004 2010-03-25 2011-03-18 Machine électrique à aimants permanents WO2011116777A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EA201000637A EA014727B1 (ru) 2010-03-25 2010-03-25 Электрическая машина с постоянными магнитами
EA201000637 2010-03-25

Publications (1)

Publication Number Publication Date
WO2011116777A1 true WO2011116777A1 (fr) 2011-09-29

Family

ID=43778123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EA2011/000004 WO2011116777A1 (fr) 2010-03-25 2011-03-18 Machine électrique à aimants permanents

Country Status (2)

Country Link
EA (1) EA014727B1 (fr)
WO (1) WO2011116777A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660955A1 (fr) * 2012-05-02 2013-11-06 ABB Technology AG Machine électrique
EP2786468B1 (fr) * 2011-11-30 2019-03-13 ABB Research Ltd. Machines électriques et rotors de machines électriques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2467454C1 (ru) * 2011-05-25 2012-11-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГОУ ВПО "СПбГПУ") Обращенный вентильный двигатель
RU180432U1 (ru) * 2017-06-14 2018-06-14 Андрей Владимирович Шишов Электродвигатель с косыми магнитными полями
JP6874630B2 (ja) * 2017-10-05 2021-05-19 トヨタ自動車株式会社 回転電機ロータ及びその製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1552694A (en) * 1975-05-30 1979-09-19 Cem Comp Electro Mec Synchronous motors
US4188554A (en) * 1977-12-13 1980-02-12 The University Of Southampton Alternating current rotating electric machine
SU1243064A1 (ru) * 1984-03-06 1986-07-07 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт электромашиностроения Ротор электрической машины
EA010775B1 (ru) * 2008-01-24 2008-10-30 Открытое Акционерное Общество "Инжиниринговая Нефтегазовая Компания - Всероссийский Научно-Исследовательский Институт По Строительству И Эксплуатации Трубопроводов, Объектов Тэк" Многофазная электрическая машина с постоянными магнитами
US7619342B2 (en) * 2004-05-27 2009-11-17 Abb Oy Rotor for an electric machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1552694A (en) * 1975-05-30 1979-09-19 Cem Comp Electro Mec Synchronous motors
US4188554A (en) * 1977-12-13 1980-02-12 The University Of Southampton Alternating current rotating electric machine
SU1243064A1 (ru) * 1984-03-06 1986-07-07 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт электромашиностроения Ротор электрической машины
US7619342B2 (en) * 2004-05-27 2009-11-17 Abb Oy Rotor for an electric machine
EA010775B1 (ru) * 2008-01-24 2008-10-30 Открытое Акционерное Общество "Инжиниринговая Нефтегазовая Компания - Всероссийский Научно-Исследовательский Институт По Строительству И Эксплуатации Трубопроводов, Объектов Тэк" Многофазная электрическая машина с постоянными магнитами

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2786468B1 (fr) * 2011-11-30 2019-03-13 ABB Research Ltd. Machines électriques et rotors de machines électriques
EP2660955A1 (fr) * 2012-05-02 2013-11-06 ABB Technology AG Machine électrique
WO2013164298A1 (fr) * 2012-05-02 2013-11-07 Abb Technology Ag Machine électrique
KR20140143830A (ko) * 2012-05-02 2014-12-17 에이비비 테크놀로지 아게 전기 기계
US20150061427A1 (en) * 2012-05-02 2015-03-05 Abb Technology Ag Electric machine
JP2015516135A (ja) * 2012-05-02 2015-06-04 エイビービー テクノロジー アクチエンゲゼルシャフト 電気機械
KR101632933B1 (ko) * 2012-05-02 2016-06-23 에이비비 테크놀로지 아게 전기 기계
US9859762B2 (en) 2012-05-02 2018-01-02 Abb Schweiz Ag Electric machine with pole arrangement

Also Published As

Publication number Publication date
EA201000637A1 (ru) 2011-02-28
EA014727B1 (ru) 2011-02-28

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