WO2012136464A2 - Moteur électrique comportant des dents en appui - Google Patents

Moteur électrique comportant des dents en appui Download PDF

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Publication number
WO2012136464A2
WO2012136464A2 PCT/EP2012/054760 EP2012054760W WO2012136464A2 WO 2012136464 A2 WO2012136464 A2 WO 2012136464A2 EP 2012054760 W EP2012054760 W EP 2012054760W WO 2012136464 A2 WO2012136464 A2 WO 2012136464A2
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
tooth
segment
connecting element
type
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/EP2012/054760
Other languages
German (de)
English (en)
Other versions
WO2012136464A3 (fr
Inventor
Karsten Brach
Arne GRÜNING
Axel MÖHLE
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of WO2012136464A2 publication Critical patent/WO2012136464A2/fr
Anticipated expiration legal-status Critical
Publication of WO2012136464A3 publication Critical patent/WO2012136464A3/fr
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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H02K3/487—Slot-closing devices
    • H02K3/493—Slot-closing devices magnetic
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to an electrical machine having a first and a second active part, which are movable in a direction of movement to each other, wherein the first active part has a plurality of segments, at each segment several ⁇ re teeth protrude from a yoke, an edge tooth of the plurality of teeth is located at a segment boundary of the respective Seg ⁇ ment, is thinner than an adjacent tooth of the plurality of teeth of the segment, the edge tooth and the adjacent tooth are connected to their tooth heads by a connecting element of the first type, and a tooth pair of the plurality of teeth with predetermined geometry is connected by a connecting element the second type having a ande ⁇ re shape as the connecting element the first type.
  • a tooth may be shared at the boundary between two segments. To prevent this half tooth from being deformed or vibrating under the influence of electromagnetic forces, it must be supported.
  • a so-called supplement is inserted during assembly of the segments in the joint between the two segments. This can be, for example, a resin-impregnated glass fiber mat which hardens after assembly in the joint. After curing, the gap between the segments is filled and it takes place on the mat mutual support of ⁇ half teeth, so that these pressure forces can be absorbed by the electrical ⁇ rule ladder in the groove and mechanical vibrations of the teeth can be avoided.
  • DE 10 2010 039 381 is mechanically connected to an electric machine, which has an active part with teeth, a first tooth via an anchor element with a second tooth.
  • the anchor element is provided for example for receiving a Switzerlandbe ⁇ load and / or a pressure load.
  • a derar- term anchor member is in particular in a mechanically weakened ge ⁇ tooth as a semi-tooth advantageous.
  • the anchor member engages from one tooth to another, binding the ⁇ se.
  • In order to increase the stability of the anchoring element can have a pretension. By such a support of the edge teeth on the segment boundaries can be protected against mechanical and electromagnetic vibrations in any case. Thus, in particular, the extreme case can be avoided that break out of the half teeth and lead to damage or total failure of the electric machine.
  • the object of the present invention is thus to reduce rest and / or pendulum moments in segmented machines with half or thinned edge teeth.
  • a first and a second active part which are movable in a direction of movement to each other, wherein comprising the first active part of a plurality of segments, wherein each segment a plurality of teeth by a yoke abste ⁇ hen,
  • an edge tooth of the plurality of teeth located at a segment boundary of the respective segment is made thinner than an adjacent tooth of the plurality of teeth of the segment
  • edge tooth and the adjacent tooth are connected to one another at their tooth tips by a connecting element of the first type
  • connection element ⁇ first type is a pair of teeth of said plurality of teeth having a predetermined Geomet rie connected by a connecting element the second type having a different shape than the connection element ⁇ first type
  • the tooth heads and / or connecting elements are also changed within the segment of the electric machine in relation to toothed pairs with a predetermined geometry and connecting elements of the second type. Due to this altered geometry of the teeth or these changed connection elements, a magnetic balance of the active parts is achieved at standstill and during operation of the electrical machine. This reduces the rest and pendulum moments.
  • the geometry of the first active part which has a plurality of segments, only changed so that the cogging torques or the pendulum moments are redu ⁇ ed.
  • it is in the first active part to ei ⁇ NEN stator of the electrical machine.
  • it may be a torque motor or a linear motor.
  • the electric machine may be a generator or motor.
  • a groove may be formed, into which a part of an electrical winding is inserted.
  • the respective electrical winding can be assigned to different electrical phases.
  • a wedge is inserted as a second type connecting element between two adjacent teeth of the plurality of teeth except for the peripheral tooth.
  • Such wedges with wedge-shaped edges are easy to produce anddrahe ⁇ gene into the grooves of two adjacent tooth tips without high expenditure.
  • connection element first type that supports the edge of the tooth Seg ⁇ ment and / or supporting the further connecting element, which teeth within the segment, which can have a clamp, respectively.
  • This has the advantage that especially the edge tooth of a segment can be drawn through the bracket to the center of Seg ⁇ ments, so to the other teeth.
  • the teeth are pushed away from each other by conventional wedges, which is critical especially at the segment boundary.
  • the two teeth in the interior of the segment can each have at ih ⁇ rem tooth head a groove which has an undercut, in which engages the further connecting element. Only through this groove results in a geometry change that can be used to reduce the detent and / or pendulum moment. But even the connecting element itself, which may for example also have a dumbbell-shaped cross-section, can contribute to the deliberate change in the geometry.
  • the further tooth pair in the interior of the segment, which is connected by the further connecting element can be arranged asymmetrically to the middle of the segment. Alternatively, it may of course also be provided symmetrically to the middle of the segment. The choice of the position of the tooth pair depends on the possibility of being able to reduce the detent or pendulum moment.
  • a plurality of tooth pairs of the plurality of teeth except the edge tooth in the segment can each be connected to each other with a kausele ⁇ ment first type at their tooth tips. It is therefore deliberately changed within a segment not only a single pair of teeth for the reduction of detent and pendulum moment, but it can also ver ⁇ changes several pairs of teeth are compared to the predetermined geometry of the teeth and the connecting element of the second type.
  • the tooth tip of a tooth of the plurality of teeth may be asymmetrical. Specifically, it may bezüg ⁇ Lich be asymmetrical to a plane perpendicular to the moving direction in the middle of the tooth. This is for example the case if at the adjacent tooth on one side of the respective connecting element is a ⁇ dig other groove notwen as for the connecting element to the adjacent tooth on the other side.
  • the shape of the connecting element relative to the second type may alternatively or additionally, the shape of the connecting element relative to the second type to be changed.
  • differently shaped connecting elements can engage on one of the several teeth for connection to an adjacent tooth.
  • brackets or other shaped fasteners are used.
  • FIG. 3 shows an alternative embodiment from FIG. 2;
  • FIG. 4 shows yet another embodiment from FIG. 2 and FIG.
  • the electric machine is, for example, a motor or generator. It may also be a rotary machine or, for example, a linear motor. In any case, the electric machine has a first active part 1 and a second active part 2, as indicated in FIG.
  • the first active part 1 is, for example, a stand, while the second active part 2 is then a runner. Between the two active parts 1 and 2 is an air gap. 3
  • the first active part 1 is segmented. It therefore has several ⁇ re segments 4, 5, which abut against a segment joints or segment boundary 6.
  • Each segment 4, 5 has teeth 7 to 11, which are connected to each other by a respective yoke 12, 13 with each other.
  • the teeth 7 to 11 are aligned in the direction of the second active part 2.
  • the second active part 2 moving in the direction of movement 14 relative to the first active part 1.
  • the teeth 7 to 11 are perpendicular to the direction of movement 14 as well as the segment ⁇ fuge or the segment gap. 6
  • At the edge of each segment 4, 5 is a half tooth 8, 9.
  • the windings or winding parts are associated with ⁇ play different phases. in vorlie ⁇ constricting example, there is a three-phase machine, wherein the windings 15, 18 of a first phase, the winding 16 of a second phase and the winding 17 is associated with a third phase.
  • wedges example of connecting elements of the second type
  • the tooth tip of the tooth 7 has for example a lateral to be ⁇ adjacent tooth (in FIG 1 is no longer visible) directed groove 19.
  • a tooth with such a groove for example, owns a ⁇ ne predetermined geometry.
  • the wedge is not ⁇ characterized.
  • edge teeth 8, 9 are only approximately half as thick as "normal" teeth 7, 10, 11, they are correspondingly less stable, for which reason, for example, the edge tooth 8 is supported on the next adjacent tooth 7 of the segment 4. This is done for example by a clamp 20 as a connecting element ⁇ first type. the clip 20 engages in grooves 21, 22 which have undercuts, respectively, of the two teeth 7, 8.
  • edge teeth 8, 9 are held by clamps 20 as connecting elements and inside the segments 4, 5 such measures are not necessary, resulting in geometric and thus magnetic irregularities that lead to rest and pendulum moments.
  • Such pulsating torques to resting and to reduce the segments is now according to the invention inside carried out one or more changes in the tooth heads, the magneti ⁇ rule impact of the supports, the edge teeth 8, 9 to compensate com-.
  • 24 is, for example, according to FIG 2 in one disclosed embodiment, in the segment center of the tooth tips 23, a similar connecting element or a first type ähnli ⁇ ches connecting element such as to the edge teeth 8, 9 is introduced ⁇ .
  • the tooth heads of both teeth 23, 24 are changed compared to, for example, the tooth heads more usual
  • Teeth 25, 26 with the respective predetermined geometry which have the simple wedge-shaped grooves 19 on one side or on both sides.
  • the tooth tips of the teeth 23 and 24 are here also provided with grooves 27, 28 which have undercuts.
  • the two teeth 23, 24 can also be connected by, for example, a clamp 20 (not shown in FIG. 2).
  • the tooth tips of the teeth 23, 24 can also be otherwise altered so that other Verbin ⁇ manure elements, for example, dumbbell-shaped connecting elements, can be used.
  • shape of the possible usable fasteners reference is explicitly made to the document DE 10 2010 039 381.
  • a change in the teeth 23, 24 with respect to predetermined geometries for connecting elements of the second type is likewise provided in the middle of the segment.
  • the grooves 29, 30 are formed in the tooth tips of the two teeth significantly wider in the direction of movement 14 than the grooves 27, 28 in the example of FIG 2.
  • the tooth tips are changed differently than by the narrower grooves 27th , 28.
  • This change in the tooth heads may be advantageous in terms of rest and pendulum moments.
  • the grooves 31, 32 may be provided in the tooth tips of the teeth 23, 24 also with sloping walls.
  • FIG. 5 shows another example of how the latching and / or oscillating moments can be reduced.
  • This embodiment is based on the example of FIG. 1.
  • the tooth tips of the teeth 7 and 33 have corresponding grooves 34, 35.
  • the groove 34 of the tooth 7 has undercuts on both sides.
  • the groove 35 of the tooth 33 has an undercut towards the tooth 7.
  • two brackets can engage the tooth 7, one towards the edge tooth 8 and the other towards the adjacent tooth 33 on the other side.
  • tooth tips adapted to the support at the edge of the segment in the middle of the respective segment, but also teeth away from the middle.
  • every pair of teeth especially a single one
  • Tooth in which segment are changed so that the support of the edge tooth is magnetically compensated at the end of the segment.
  • more than one additional "defect point” location with altered tooth heads or connecting elements
  • recesses in a plurality of tooth heads may also be provided.
  • the basic principle is always the targeted introduction of additional magnetic disturbances, which are the measures for Compensate fastening of the half teeth. These disturbances are dimensioned in such a way that the rest and pendulum moments are minimized and the mean torque is reduced as little as possible. In spite of the magnetic interference, the support of half the edge teeth of a segmented electric machine does not cause any significant pendulum moments.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention vise à réduire des couples de crantage et/ou pendulaires d'un moteur électrique segmenté. L'invention concerne un moteur électrique comportant une première et une deuxième partie active (1, 2) pouvant être déplacées l'une par rapport à l'autre dans une direction de déplacement (14), la première partie active (1) présentant plusieurs segments (4, 5). Sur chaque segment, plusieurs dents font saillie par rapport à une culasse, une dent marginale (8, 9) de la pluralité de dents (7, 8, 9, 10, 33) située à une limite de segment (6) du segment respectif étant conçue plus fine qu'une dent adjacente (7, 10) de la pluralité de dents du segment, et la dent marginale et la dent adjacente étant reliées sur leur sommets par un élément de liaison d'un premier type. Une paire de dents de la pluralité de dents est reliée par un élément de liaison du deuxième type ayant une forme différente de celle de l'élément de liaison du premier type. Au moins deux dents du segment (4, 5) non situées sur une limite de segment (6) du segment sont reliées par complémentarité de forme sur leurs sommets par un autre élément de liaison du premier type, les deux dents et/ou autre l'autre élément de liaison du premier type étant conçus de telle manière que l'élément de liaison est disposé sur les deux dents de telle manière qu'un couple de crantage ou pendulaire de la première partie active par rapport à la deuxième partie active est plus faible qu'il ne le serait si l'autre élément de liaison était du deuxième type.
PCT/EP2012/054760 2011-04-07 2012-03-19 Moteur électrique comportant des dents en appui Ceased WO2012136464A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006918.6 2011-04-07
DE102011006918.6A DE102011006918B4 (de) 2011-04-07 2011-04-07 Elektrische Maschine mit abgestützten Zähnen

Publications (2)

Publication Number Publication Date
WO2012136464A2 true WO2012136464A2 (fr) 2012-10-11
WO2012136464A3 WO2012136464A3 (fr) 2014-06-05

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PCT/EP2012/054760 Ceased WO2012136464A2 (fr) 2011-04-07 2012-03-19 Moteur électrique comportant des dents en appui

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DE (1) DE102011006918B4 (fr)
WO (1) WO2012136464A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013212407A1 (de) * 2013-06-27 2014-12-31 Robert Bosch Gmbh Elektrische Maschine
EP3444930B1 (fr) 2017-08-16 2023-01-11 Siemens Gamesa Renewable Energy A/S Stator segmenté pour un générateur électrique à entraînement direct
EP3703224B1 (fr) 2019-03-01 2022-05-11 Siemens Gamesa Renewable Energy A/S Procédé de fabrication d'un stator ou d'un rotor segmenté d'une machine électrique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039381A1 (de) 2010-08-17 2012-02-23 Siemens Aktiengesellschaft Elektrische Maschine mit Ankerelement für Zähne

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DE3110339C2 (de) * 1981-03-17 1984-09-27 Thyssen Industrie Ag, 4300 Essen Verfahren zum Herstellen eines Blechpakets für einen Langstator-Linearmotor
JPS58212337A (ja) * 1982-06-01 1983-12-10 Matsushita Electric Ind Co Ltd 電動機固定子
DE59813385D1 (de) * 1997-11-10 2006-04-20 Siemens Ag Linearmotor
CH692647A5 (fr) * 1998-03-27 2002-08-30 Mavilor Syst Sa Partie à encoches d'un moteur électrique et procédé de fabrication de cette partie.
DE10335793A1 (de) * 2003-08-05 2005-03-10 Praetec Praez Stechnik Gmbh Mehrphasiger, vielpoliger Linear- oder Rotationssynchronmotor
KR101043795B1 (ko) * 2004-07-19 2011-06-27 더 스위치 드라이브 시스템즈 오와이 전기 기계
DE502005011059D1 (de) * 2005-02-14 2011-04-14 Etel Sa Elektromotor mit einem aus mehreren blechpaketen gebildeten segmentierten teil und verfahren zum zusammenfügen der blechpakete
DE102005045348A1 (de) * 2005-09-22 2007-04-05 Siemens Ag Zahnmodul für ein permanentmagneterregtes Primärteil einer elektrischen Maschine
DE102006014616A1 (de) * 2006-03-29 2007-10-11 Siemens Ag Linearmotor mit verschieden gestalteten Sekundärteilabschnitten
CN201298796Y (zh) * 2008-08-18 2009-08-26 于波 直驱式混励型风能发电机

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102010039381A1 (de) 2010-08-17 2012-02-23 Siemens Aktiengesellschaft Elektrische Maschine mit Ankerelement für Zähne

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Publication number Publication date
DE102011006918B4 (de) 2016-03-10
DE102011006918A1 (de) 2012-10-11
WO2012136464A3 (fr) 2014-06-05

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