EP2946463A1 - Moteur électrique pourvu d'un stator divisé - Google Patents

Moteur électrique pourvu d'un stator divisé

Info

Publication number
EP2946463A1
EP2946463A1 EP13758782.0A EP13758782A EP2946463A1 EP 2946463 A1 EP2946463 A1 EP 2946463A1 EP 13758782 A EP13758782 A EP 13758782A EP 2946463 A1 EP2946463 A1 EP 2946463A1
Authority
EP
European Patent Office
Prior art keywords
rotor
axis
rotation
permanent magnets
machine according
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
EP13758782.0A
Other languages
German (de)
English (en)
Inventor
Rolf Vollmer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP13758782.0A priority Critical patent/EP2946463A1/fr
Publication of EP2946463A1 publication Critical patent/EP2946463A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/40—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with flux distributors rotating around the magnets and within the armatures

Definitions

  • the present invention relates to an electric machine
  • the electric machine has a first stator element, a second stator element and a rotor connected to a rotor shaft,
  • the rotor shaft is rotatably mounted in bearings, so that the rotor is rotatable about a rotation axis
  • the rotor is arranged between the first and the second stator element, viewed radially relative to the axis of rotation,
  • the first stator element carries a stator winding system.
  • Such an electric machine is known for example from EP 2 503 671 AI.
  • magnetic field generators are arranged on the second stator element whose magnetic field is coupled into the rotor.
  • the electric machine has a first stator element and a rotor connected to a rotor shaft, wherein the rotor shaft is rotatably supported in bearings, so that the rotor is rotatable about a rotation axis.
  • no second stator element is present.
  • the rotor carries a number of permanent magnets magnetized tangentially to the axis of rotation, wherein flux guide elements are arranged tangentially around the axis of rotation between the permanent magnets, by means of which magnetic fields emanating from the permanent magnets are deflected radially onto the first stator element.
  • the electric machine comprises a first stator element and a rotor connected to a rotor shaft, wherein the Rotor shaft is rotatably mounted in bearings, so that the rotor is rotatable about an axis of rotation.
  • no second stator element is present.
  • the first stator element carries a number of permanent magnets magnetized tangentially to the rotation axis.
  • the rotor has a rotor axis which rotates about the axis of rotation and from which soft-magnetic fingers extend onto the first stator element. The soft magnetic fingers are thus connected to each other via the Rotorj och.
  • the object of the present invention is to provide a multi-phase electric machine which is permanently magnetically excited and has a simple structure.
  • the task is accomplished by an electric machine with the
  • the second stator carries a number of permanent magnets that generate magnetic fields, which are seen around the axis of rotation around alternately directed towards the rotor and away from the rotor, and
  • the rotor has a number of soft magnetic segments, which are seen to be evenly distributed tangentially around the axis of rotation and between which are non-magnetic and electrically poor or non-conductive areas.
  • the second stator element prefferably, however, it is the other way round.
  • the permanent magnets may be formed as needed.
  • the permanent magnets are preferably ferrites.
  • the rotor is preferably connected to the rotor shaft via a connecting element, from which the soft-magnetic segments extend parallel to the axis of rotation.
  • the connecting element can be designed, in particular, as a cover disk or as a terminating flange.
  • the soft magnetic segments, which are arranged between the permanent magnets, are preferably laminated.
  • the electric machine according to the invention is located in the non-magnetic and electrically poor or non-conductive areas of air or plastic.
  • the stator winding system has a pole pair number.
  • the permanent magnets form a number of magnetic pole pairs.
  • the number of soft magnetic segments is preferably equal to the sum or difference of the pole pair number and the number of magnetic pole pairs.
  • the electric machine according to the invention can be used as needed.
  • it is used as a servomotor, as a torque motor, as a generator and / or drive in vehicles or as a wind power generator.
  • FIG. 2 shows a cross section through the electric machine of FIG. 1
  • an electrical machine has a first stator element 1, a second stator element 2 and a rotor 3.
  • the rotor 3 is connected to a rotor shaft 4.
  • the rotor shaft 4 is rotatably mounted in bearings 5.
  • the rotor shaft 4 and with it the rotor 3 are thereby rotatable about a rotation axis 6.
  • axial is a direction parallel to the axis of rotation 6.
  • Radial is a direction orthogonal to the axis of rotation 6 on the Axis of rotation 6 toward or away from it.
  • Tangential is a direction that is both to the axial direction as well as orthogonal to the radial direction. Tangential is thus a direction which is directed in a constant radial distance and at a constant axial position in a circle around the axis of rotation 6 around.
  • the rotor 3 Seen radially relative to the axis of rotation 6, the rotor 3 is arranged between the first and the second stator element 1, 2. It is in principle possible that the first stator element 1 is arranged closer to the axis of rotation 6 than the second stator element 2. According to FIGS. 1 and 2, however, it is the other way round. The first stator element 1 is thus arranged further away from the axis of rotation 6 than the second stator element 2.
  • the first stator element 1 carries a stator winding system. Winding heads 7a of the stator winding system are visible in FIG. 1, windings 7b of the stator winding system are shown in FIG.
  • the stator winding system is multi-phase, as shown in FIG 2, for example, three-phase.
  • Stator winding system has a number of pole pairs.
  • the pole pair has, according to FIG. 2 (purely by way of example) the value 4.
  • the second stator element 2 carries a number of permanent magnets 8.
  • the permanent magnets 8 may, for example, be ferrites. It is possible that the permanent magnets 8 are magnetized alternately radially. In this case, the magnetic fields B emanating from the permanent magnets 8 are already magnetized directly alternately radially, i. alternately directed to the rotor 3 and away from the rotor 3. According to FIG 2, however, the permanent magnets 8 are magnetized tangentially to the axis of rotation 6. This is indicated in FIG. 2 by corresponding arrows 9. In this case, the magnetic fields B emanating from the permanent magnets 8 are initially directed alternately tangentially.
  • the permanent magnets 8 are arranged distributed tangentially around the axis of rotation 6 seen around.
  • the permanent magnets 8 form a number of magnetic pole pairs.
  • the Number of magnetic pole pairs according to FIG 2 (purely by way of example) to the value 6.
  • flux guide elements 10 are arranged tangentially around the rotation axis 6 as seen between the permanent magnets 8.
  • the flow-guiding elements 10 are - similar to pie pieces - formed in a sector of a circle sector. If the second stator element 2 were further away from the axis of rotation 6 than the first one
  • the rotor 3 has a number of soft magnetic segments 11.
  • the soft-magnetic segments 11 are arranged distributed tangentially around the axis of rotation 6.
  • the soft magnetic segments 11 are preferably laminated according to FIG.
  • the number of soft magnetic segments 11 has the value 10 according to FIG.
  • the relationship holds that the number of soft magnetic segments 11 is equal to the sum of the pole pair number and the number of magnetic pole pairs. Alternatively, it could be equal to the difference of the pole pair number and the number of magnetic pole pairs.
  • the soft-magnetic segments 11 are non-magnetic and electrically poorly or non-conducting regions 12.
  • the regions 12 for example, there may be air.
  • plastic may be located in the regions 12, for example.
  • Other materials are conceivable. It is crucial that the regions 12 are non-magnetic and that an electrical current flow from one of the regions 12 to another of the regions 12 is not possible.
  • the rotor 3 has between the soft-magnetic segments 11 and the second Stator element 2 no about the rotation axis 6 to running rotor yoke over which the soft magnetic segments 12 (mechanically and magnetically) are interconnected.
  • the connection of the soft magnetic segments 12 together (so that they together form the rotor 3) instead takes place via a connecting element 13, via which the rotor 3 is connected to the rotor shaft 4.
  • the soft-magnetic segments 11, starting from the connecting element 13 extend axially relative to the axis of rotation 6.
  • the connecting element 13 can be designed, for example, as a cover disk or as a terminating flange.
  • the electric machine according to the invention can be used and used as needed, for example as a servomotor, as a torque motor, as a generator and / or drive in vehicles or as a wind power generator.
  • the electrical machine according to the invention has many advantages.
  • the use of ferrites as permanent magnets 8 low manufacturing costs are possible.
  • By positioning the permanent magnets 8 in the stator of the effort for the attachment of the permanent magnets 8 is minimized.
  • no dynamic loads caused by the movement of the rotor 3 act on the permanent magnets 8.

Abstract

L'invention concerne un moteur électrique comportant un premier élément de stator (1), un deuxième élément de stator (2) et un rotor (3) relié à un arbre de rotor (4). L'arbre de rotor (4) est monté rotatif dans des paliers (5) permettant au rotor (3) de tourner autour d'un axe de rotation (6). Dans un sens radial par rapport à l'axe de rotation (6), le rotor (3) est disposé entre la premier et le deuxième élément de stator (1, 2). Le premier élément de stator (1) est pourvu d'un système d'enroulement de stator. Le deuxième élément de stator (2) est pourvu d'un certain nombre d'aimants permanents (8). Les aimants permanents (8) génèrent des champs magnétiques (B) qui, en suivant le pourtour de l'axe de rotation (6), présentent en alternance une orientation s'approchant du rotor (3) et s'éloignant du rotor (3). Le rotor (3) présente un certain nombre de segments (11) magnétiques doux lesquels présentent, en suivant le pourtour de l'axe de rotation (6), une répartition tangentielle régulière et entre lesquels sont intercalées des zones (12) non magnétiques ne conduisant pas un peu l'électricité.
EP13758782.0A 2013-02-25 2013-08-27 Moteur électrique pourvu d'un stator divisé Ceased EP2946463A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13758782.0A EP2946463A1 (fr) 2013-02-25 2013-08-27 Moteur électrique pourvu d'un stator divisé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13156576.4A EP2770616A1 (fr) 2013-02-25 2013-02-25 Machine électrique avec stator séparé
PCT/EP2013/067661 WO2014127855A1 (fr) 2013-02-25 2013-08-27 Moteur électrique pourvu d'un stator divisé
EP13758782.0A EP2946463A1 (fr) 2013-02-25 2013-08-27 Moteur électrique pourvu d'un stator divisé

Publications (1)

Publication Number Publication Date
EP2946463A1 true EP2946463A1 (fr) 2015-11-25

Family

ID=47749703

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13156576.4A Withdrawn EP2770616A1 (fr) 2013-02-25 2013-02-25 Machine électrique avec stator séparé
EP13758782.0A Ceased EP2946463A1 (fr) 2013-02-25 2013-08-27 Moteur électrique pourvu d'un stator divisé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13156576.4A Withdrawn EP2770616A1 (fr) 2013-02-25 2013-02-25 Machine électrique avec stator séparé

Country Status (2)

Country Link
EP (2) EP2770616A1 (fr)
WO (1) WO2014127855A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3076529A1 (fr) * 2015-04-01 2016-10-05 Siemens Aktiengesellschaft Machine électrique tournante dotée d'aimants lenticulaires magnétisés latéralement
EP2991196A3 (fr) 2014-09-01 2016-06-29 Siemens Aktiengesellschaft Aimant permanent pour un rotor d'une machine électrique
DE102014113109A1 (de) * 2014-09-11 2016-03-17 Pfeiffer Vacuum Gmbh Vakuumpumpe
CN105576918B (zh) * 2015-06-03 2018-02-23 华侨大学 一种具有三层永磁体励磁的永磁电机
EP3131189B1 (fr) * 2015-08-12 2018-08-01 Siemens Aktiengesellschaft Rotor d'une machine electrique
CN105141092A (zh) * 2015-10-15 2015-12-09 东南大学 一种磁齿轮型双定子混合永磁记忆电机
CN105337429B (zh) * 2015-11-09 2018-02-27 江苏大学 一种组合励磁型定子分区式混合永磁磁通切换记忆电机
CN105375715B (zh) * 2015-11-09 2017-11-17 江苏大学 少稀土类宽调速混合永磁磁通切换双定子电机
DE102016106187A1 (de) * 2016-04-05 2017-10-05 Wobben Properties Gmbh Generator mit magnetischer Übersetzung
DE102018201610A1 (de) * 2018-02-02 2019-08-08 Siemens Aktiengesellschaft Rotierende elektrische Maschine und Luftfahrzeug mit einer rotierenden elektrischen Maschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096455A (en) * 1962-03-08 1963-07-02 Basic Motor Developments Inc Printed disc electrical machinery
CN101345453A (zh) * 2008-05-06 2009-01-14 南京航空航天大学 并列结构混合励磁无刷同步电机
EP2528207A1 (fr) * 2011-05-23 2012-11-28 Delphi Automotive Systems Luxembourg SA Machine électrique sans balai

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217804A1 (de) * 2002-04-22 2003-11-06 Joern-Heinrich Schaefertoens Elektrische Synchronmaschine mit Rotoren in Sammlerbauweise und Statoren mit Konzentratorwirkung
US8159104B1 (en) * 2005-08-22 2012-04-17 Clearwater Holdings, Ltd DC induction electric motor-generator with magnetic gap self commutating laminated ferromagnetic rotating core
US8067847B1 (en) * 2010-12-16 2011-11-29 General Electric Company Variable speed machine assembly and method for making the same
EP2503671A1 (fr) 2011-03-22 2012-09-26 Siemens Aktiengesellschaft Machine synchrone dotée d'un dispositif d'excitation à stator fixe optimisé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096455A (en) * 1962-03-08 1963-07-02 Basic Motor Developments Inc Printed disc electrical machinery
CN101345453A (zh) * 2008-05-06 2009-01-14 南京航空航天大学 并列结构混合励磁无刷同步电机
EP2528207A1 (fr) * 2011-05-23 2012-11-28 Delphi Automotive Systems Luxembourg SA Machine électrique sans balai

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014127855A1 *

Also Published As

Publication number Publication date
EP2770616A1 (fr) 2014-08-27
WO2014127855A1 (fr) 2014-08-28

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