WO2008148398A1 - Machine électrique de type à vannes - Google Patents

Machine électrique de type à vannes Download PDF

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Publication number
WO2008148398A1
WO2008148398A1 PCT/EA2008/000004 EA2008000004W WO2008148398A1 WO 2008148398 A1 WO2008148398 A1 WO 2008148398A1 EA 2008000004 W EA2008000004 W EA 2008000004W WO 2008148398 A1 WO2008148398 A1 WO 2008148398A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
poles
stator
permanent magnets
adjacent
Prior art date
Application number
PCT/EA2008/000004
Other languages
English (en)
Russian (ru)
Inventor
Alexei Sergeevich Adalev
Andrei Sergeevich Druzhinin
Alexei Sergeevich Kibardin
Vladimir Georgievich Kuchinsky
Igor Borisovich Markitantov
Karen Vruirovich Martirosyan
Vladimir Fedorovich Soikin
Viktor Mikhailovich Fedotov
Erimei Ivanovich Cherekchidi
Georgy Ivanovich Shmalko
Original Assignee
Otkrytoe Aktsionernoe Obschestvo 'inzhiniringovaya Neftegazovaya Kompania - Vserossiisky Nauchno-Issledovatelsky Institut Po Stroitelstvu I Expluatatsii Truboprovodov, Obiektov Tek'
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 Otkrytoe Aktsionernoe Obschestvo 'inzhiniringovaya Neftegazovaya Kompania - Vserossiisky Nauchno-Issledovatelsky Institut Po Stroitelstvu I Expluatatsii Truboprovodov, Obiektov Tek' filed Critical Otkrytoe Aktsionernoe Obschestvo 'inzhiniringovaya Neftegazovaya Kompania - Vserossiisky Nauchno-Issledovatelsky Institut Po Stroitelstvu I Expluatatsii Truboprovodov, Obiektov Tek'
Publication of WO2008148398A1 publication Critical patent/WO2008148398A1/fr

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

Definitions

  • the present invention relates to electrical engineering, namely, to valve electric machines.
  • one of the disadvantages is an increase in the overall length of the machine compared to the active rotor length due to the length of the departures of the frontal parts of the stator winding.
  • Another disadvantage of this type of machine is the presence of the groove zone of the stator magnetic circuit, which approximately halves the cross section of steel through which the main magnetic flux passes, thereby limiting the magnitude of the magnetic induction of the excitation field due to saturation of the magnetic circuit of the teeth of the groove zone.
  • the implementation of a distributed winding for powerful electric machines is very time-consuming, because requires soldering of individual conductors with subsequent application of insulation in a hard-to-reach zone of the winding previously laid in the grooves.
  • US Pat. No. 6,949,856 describes a similar multiphase electric machine having lumped coils on a stator.
  • the known electric machine contains an explicitly polar cylindrical rotor with an even number of poles and an excitation system, and an explicitly polar stator located coaxially with the rotor.
  • the excitation system creates a magnetic flux at the poles of the rotor, the direction of which is opposite in any adjacent poles.
  • the number of stator poles is not equal to the number of rotor poles, and the electrical connection of the stator coils is standard for three-phase electric machines.
  • the stator coils adjacent to the circumference are connected in series, which leads to a decrease in the total electromagnetic moment of the machine.
  • the rotor excitation system is based on radially magnetized permanent magnets, which does not allow to obtain a sufficiently large magnetic field induction in the gap between the rotor and the stator.
  • the magnetically conducting sections of the rotor, shunting the opposite poles of the permanent magnets themselves and adjacent opposite poles of the rotor inside the rotor itself are one of the main disadvantages of this type of machine; the main magnetic flux between the rotor and the stator, which determines the normal functioning of the electric machine, will not be closed through the stator until these sections of the rotor are saturated with scattering fluxes to such an extent that their resistance becomes comparable with the resistance to the main stream through the working gap. Based on this, the bulk of patent applications relates to attempts to reduce these scattering fluxes. Disclosure of invention
  • the objective of the present invention is to create an electric machine, simpler in design, which eliminates these disadvantages and provides a technical result, which consists in increasing the electromagnetic moment and reducing the amplitude of the pulsating electromagnetic moment, as well as the rotor for such a machine
  • a valve electric machine containing an explicitly polar rotor with an even number of poles and an excitation system formed by permanent magnets and creating a magnetic flux at the poles of the rotor, the direction of which is opposite in any adjacent poles of the rotor, while the excitation system of each rotor pole is made of two constant magnets located relative to each other at an angle facing the apex from the working gap between the rotor and the stator, and an explicit pole stator, the number of poles of which different from the number of poles of the rotor, and each pole of the stator is surrounded by an identical coil, i.e. the stator has a concentrated winding.
  • the invention proposes combining successively arranged stator coils into identical groups so that all coils of each group belong to different phases, and the polarities of the stator poles created by the coils of each group alternate. The latter is achieved by reversing the direction of the current in adjacent coils within each group.
  • the identity of the magnetic state of the groups of stator coils is determined by two factors: - the identity of the relative positions of the poles of the rotor and stator within each group of stator coils, and
  • the magnetic fluxes of the field in identical coils of neighboring groups are opposite in sign.
  • the currents in the same coils of neighboring groups must be opposite in sign, so that the polarities of the stator poles created by these coils are different.
  • / is the rotor pole shift time from the first stator pole to the pole with the number /
  • ⁇ is the electric phase shift of the voltage across the coil with the number i.
  • Stator coils belonging to one phase can be connected either in series or in parallel, depending on the needs of a particular implementation.
  • the power supply system of this machine must ensure the flow in phases of a symmetric alternating multiphase system of currents.
  • Implementations of the power system can be different, for example, it can be a valve converter.
  • the rotor excitation system can be performed on the basis of permanent magnets located in radial sections of the rotor magnetic circuit.
  • the block of permanent magnets of each pole of the rotor be made of two permanent magnets located relative to each other at an angle facing the apex of the working gap between the rotor and the stator.
  • the permanent magnets of each pole essentially touch the edges of unipolar faces, while the angle between the permanent magnets is about ninety degrees, and the parts of the rotor adjacent to the faces of the permanent magnets parallel to the direction of magnetization and facing away from the working gap, as well as parts of the rotor between adjacent poles of the rotor, adjacent to the faces of the working gap of the permanent magnets parallel to the direction of magnetization are made of non-magnetic material.
  • the sections of the rotor between adjacent poles of the rotor adjacent to the faces of the permanent magnets facing the working gap parallel to the direction of magnetization preferably have a depth of the order of twice the thickness of the permanent magnets from the side of the working gap.
  • This embodiment ensures the exclusion around each permanent magnet of closed sections of the magnetic circuit, shunting the opposite poles of the permanent magnets themselves, and sections of the magnetic circuit, shunting the opposite adjacent poles of the rotor inside the magnetic system of the rotor itself.
  • the magnetic resistance increases to the scattering fluxes both between opposite (N and S) poles of the permanent magnets themselves and between opposite (N and S) neighboring rotor poles inside the magnetic system of the rotor itself.
  • the polarities of any adjacent rotor poles remain opposite, and the sections of the rotor magnetic circuit located on the side external to the air gap from the permanent magnets have a continuous contour along the power retaining cylinder with a thickness not exceeding the saturation thickness of the rotor magnetic circuit with scattering fluxes, i.e. not more than units of percent of the radial thickness of the rotor core; discontinuities are allowed in the circuit of the rotor magnetic circuit along the power retaining cylinder, the width of which does not exceed the smallest radial size of the magnetic circuit, since under the action of centrifugal forces a slight increase in the radius of the rotor and its circumference is possible.
  • Such a design of the magnetic system of the rotor provides an increase in the electromagnetic moment, achieved by engaging at every moment time of all machine poles, when the magnetic flux of each rotor pole interacts only with the stator poles closest to it, providing localization of the magnetic flux and an increase in the amplitude of the magnetic field in the working gap. Additionally, this design provides an additional increase in electromagnetic moment due to the concentration of magnetic flux in the poles of the rotor, due to the configuration of permanent magnets at an angle between their working faces of the order of ninety degrees.
  • Permanent magnets practically touching along the length of the rotor with unipolar faces, form a configuration that reduces the scattering flux from the side of the rotor external to the working gap and the losses resulting from them in the area of the rotor retaining cylinder.
  • the rotor portions between adjacent rotor poles adjacent to the faces of the permanent magnets facing the working gap parallel to the direction of magnetization are cavities filled with air.
  • FIG. 1 shows an example embodiment of an electric machine with reversed geometry when the rotor is coaxial with the stator outside the stator.
  • FIG. 2 shows a typical picture of a magnetic field in an electric machine, corresponding to the example in FIG. 1.
  • FIG. 1 shows an example of a multiphase electric machine with a cylindrical rotor 2 located outside the stator 1.
  • the stator magnetic system 1 consists of two groups 7a and 76 stator coils; in total there are twelve poles 3 of the stator, evenly spaced around the circumference of the stator 1 and united by a common magnetic circuit - the back of the stator 8. Each of these poles is surrounded by a stator coil 7, that is, the stator is clearly polar. All coils 7 are made identical. The number of different phases in this embodiment of an electric machine is six.
  • the stator coils of the same phases can be connected both in series and in parallel, taking into account the polarity of the current in the coils.
  • the rotor 2 of the machine consists of a power structure 9 on which a magnetic system is mounted, consisting of poles 4 of the rotor and permanent magnets b of the excitation system.
  • the power structure ensures the retention of centrifugal forces acting on the rotor magnetic system and the transmission of torque to the machine shaft.
  • Permanent magnets b are placed in the interpole sections of the 5th rotor, and each pair of permanent magnets is symmetrical about the radial axis of its pole, having on this axis the conjugation point of the ribs of unipolar faces practically touching along the length of the machine and the angle between these faces is of the order of ninety degrees, with the polarity of any neighboring the rotor poles are opposite.
  • FIG. 2 shows a picture of the magnetic field in the claimed machine at some arbitrarily selected instant.
  • the absence of a magnetic flux between the stator poles surrounded by coils of the same phases of different groups, in this case between diametrically opposite poles, as well as the absence of a scattering magnetic flux in the area of coupling of permanent magnets in the area of the rotor power retaining cylinder is clearly illustrated.

Landscapes

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

Abstract

L'invention concerne une machine électrique à vannes possédant un rotor à pôles apparents qui comporte un nombre pair d'aimants et un système d'excitation se présentant comme deux aimants permanents disposé l'un par rapport à l'autre à un angle orienté par son sommet en dehors de l'entrefer de travail, et un stator à pôles apparents qui possède un nombre de pôles différent du nombre de pôles du rotor, chaque pôle du stator étant entouré par une bobine identique. La machine se distingue en ce que les aimants permanents de chaque pôle se touchent par les bords des côtés ayant la même polarité, l'angle entre les aimants permanents est de l'ordre de 90°, et les zones du rotor adjacentes aux bords des aimants permanents parallèles au sens de magnétisation et orientés en dehors de l'entrefer de travail, ainsi que les zones du rotor entre les pôles voisins du rotor qui sont parallèles au sens de magnétisation, sont faits en un métal non magnétique. La machine peut être réalisée avec un nombre pair ouimpair de pôles du rotor qui interagissent avec un groupe de bobines du rotor, et les polarités des pôles du stator orientés vers le rotor, créés par les bobines appartenant à la même phase, sont identiques ou différentes.
PCT/EA2008/000004 2007-06-04 2008-04-18 Machine électrique de type à vannes WO2008148398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EAEA200701715 2007-06-04
EA200701715A EA200701715A1 (ru) 2007-06-04 2007-06-04 Вентильная электрическая машина

Publications (1)

Publication Number Publication Date
WO2008148398A1 true WO2008148398A1 (fr) 2008-12-11

Family

ID=40093206

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EA2008/000004 WO2008148398A1 (fr) 2007-06-04 2008-04-18 Machine électrique de type à vannes

Country Status (2)

Country Link
EA (1) EA200701715A1 (fr)
WO (1) WO2008148398A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522021A (en) * 2014-01-08 2015-07-15 Protean Electric Ltd A rotor for an electric motor or generator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA014511B1 (ru) * 2010-04-07 2010-12-30 Открытое Акционерное Общество "Нпо "Русский Электропривод" Электрическая машина
RU2537966C2 (ru) * 2012-12-14 2015-01-10 Закрытое Акционерное Общество "Новомет-Пермь" Ротор погружного электродвигателя

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1115172A1 (ru) * 1983-05-20 1984-09-23 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Релестроения Индуктор электрической машины
SU1243064A1 (ru) * 1984-03-06 1986-07-07 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт электромашиностроения Ротор электрической машины
US4689973A (en) * 1979-09-21 1987-09-01 General Electric Company Laundry machine drive
SU1356139A1 (ru) * 1983-08-11 1987-11-30 Рижский Электромеханический Завод Производственного Объединения "Радиотехника" Линейный электродвигатель посто нного тока
RU2143777C1 (ru) * 1998-10-06 1999-12-27 Закрытое Акционерное Общество Проектно-Производственно-Технологическая Фирма "ЭЛМА-Ко" Бесконтактная электрическая машина магнитоэлектрического типа
US20050029890A1 (en) * 2002-05-29 2005-02-10 Naoyuki Kadoya Motor generator
WO2005117235A1 (fr) * 2004-05-27 2005-12-08 Abb Oy Rotor pour appareil electrique
RU2005122305A (ru) * 2005-07-14 2007-01-20 "Центр Разработки Нефтедобывающего Оборудования" ("Црно") (Sc) Магнитная система ротора

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7569959B2 (en) * 2004-08-31 2009-08-04 Asmo Co., Ltd. Motor
RU53828U1 (ru) * 2005-05-03 2006-05-27 Новосибирский государственный технический университет Многополюсная магнитоэлектрическая машина

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689973A (en) * 1979-09-21 1987-09-01 General Electric Company Laundry machine drive
SU1115172A1 (ru) * 1983-05-20 1984-09-23 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Релестроения Индуктор электрической машины
SU1356139A1 (ru) * 1983-08-11 1987-11-30 Рижский Электромеханический Завод Производственного Объединения "Радиотехника" Линейный электродвигатель посто нного тока
SU1243064A1 (ru) * 1984-03-06 1986-07-07 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт электромашиностроения Ротор электрической машины
RU2143777C1 (ru) * 1998-10-06 1999-12-27 Закрытое Акционерное Общество Проектно-Производственно-Технологическая Фирма "ЭЛМА-Ко" Бесконтактная электрическая машина магнитоэлектрического типа
US20050029890A1 (en) * 2002-05-29 2005-02-10 Naoyuki Kadoya Motor generator
WO2005117235A1 (fr) * 2004-05-27 2005-12-08 Abb Oy Rotor pour appareil electrique
RU2005122305A (ru) * 2005-07-14 2007-01-20 "Центр Разработки Нефтедобывающего Оборудования" ("Црно") (Sc) Магнитная система ротора

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522021A (en) * 2014-01-08 2015-07-15 Protean Electric Ltd A rotor for an electric motor or generator
WO2015104611A3 (fr) * 2014-01-08 2015-11-12 Protean Electric Limited Rotor destiné à un moteur électrique ou à une génératrice
US20160344246A1 (en) * 2014-01-08 2016-11-24 Protean Electric Limited A rotor for an electric motor or generator
GB2522021B (en) * 2014-01-08 2018-02-07 Protean Electric Ltd A rotor for an electric motor or generator
US10491067B2 (en) 2014-01-08 2019-11-26 Protean Electric Limited Rotor for an electric motor or generator

Also Published As

Publication number Publication date
EA009822B1 (ru) 2008-04-28
EA200701715A1 (ru) 2008-04-28

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