WO2008043688A1 - Machine synchrone à excitation permanente avec enroulement à fil plat - Google Patents

Machine synchrone à excitation permanente avec enroulement à fil plat Download PDF

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Publication number
WO2008043688A1
WO2008043688A1 PCT/EP2007/060430 EP2007060430W WO2008043688A1 WO 2008043688 A1 WO2008043688 A1 WO 2008043688A1 EP 2007060430 W EP2007060430 W EP 2007060430W WO 2008043688 A1 WO2008043688 A1 WO 2008043688A1
Authority
WO
WIPO (PCT)
Prior art keywords
synchronous machine
permanent magnet
magnet synchronous
groove
machine according
Prior art date
Application number
PCT/EP2007/060430
Other languages
German (de)
English (en)
Inventor
Detlef Potoradi
Holger Schunk
Rolf Vollmer
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2008043688A1 publication Critical patent/WO2008043688A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H02K3/14—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Definitions

  • the invention relates to a permanent-magnet synchronous machine having a stator which has a slot-arranged winding system and a rotor provided with a permanent magnet, wherein the winding system has solid flat wires.
  • Permanently excited synchronous machines have a winding system in their grooves, which is secured by cover slide or Nutverschauskekeile.
  • the conductors of the winding system are wound upright wound with flat wires.
  • the field generated by the permanent magnets penetrates comparatively deep into the slot space.
  • This generated by the permanent magnet field moves with the speed of the rotor, an alternating field is created in the rotor facing part of the groove.
  • This alternating field now generates unwanted circulating currents in the massive flat wires, which lead to high speed-dependent losses. These losses dominate the thermal behavior of these motors at higher speeds.
  • the placement of the cover slide at the groove base also partially short-circuits the torque-forming flux of the stator winding, which leads to a reduction in the Torque constant leads. Ie despite slot wedge enter into a permanently excited synchronous motor erheblrche on to ⁇ rate losses.
  • the invention is now based on the problem to provide a permanent magnet synchronous machine with a winding system in which the thermal behavior is optimized and the thermal losses of the flat wire windings are reduced.
  • the object is achieved by a permanent magnet synchronous machine with a stator having a winding system arranged in grooves and a rotor provided with permanent magnets, wherein the winding system has massive flat wires, and wherein a predeterminable region of the groove is free of flat wires around the winding currents in the flat wires to avoid.
  • the width of a slot slot of the stator is at least 0.7 times the slot width.
  • the height of the conductors in the groove is now reduced by approximately 15%, which is approximately the height of a conductor width in flat wires compared to a complete occupied groove.
  • the ladder so jerk a ladder width towards the groove bottom.
  • the distance of the conductors from the tooth end is set according to the following specification.
  • X is the distance of the conductor from the teething
  • s represent the slot opening width
  • d is the physical air gap of the rotor (upper edge permanent ⁇ magnets or surface rotor) and the bottom edge of the wound tooth and s at least five times as large as the air gap d.
  • the resulting space with the cross-sectional area s times X and the length 1 (length of the laminated core) is advantageously occupied with electrically non-conductive material and / or water cooling or even another winding system of round wires, which also reduces the eddy current losses.
  • FIG. 1 shows a schematic representation of a permanent-magnet
  • FIG. 1 shows a schematic representation of a permanent magnet synchronous machine, with axially parallel pairwise parallel flutes 2 in the stator 1, each forming a tooth 9.
  • the groove slot width corresponds to the groove width.
  • the tooth 9 is surrounded by a tooth coil, which is made of flat wires 8, wherein the flat wire 8 with their, viewed in cross-section longitudinal axis are arranged substantially tangentially to the rotor 6.
  • the rotor 6 is provided with permanent magnets 7, which are arranged either on the surface of the rotor 6 or "buried".
  • FIG. 2 shows a section of a cross section of a stator 1 which has two adjacent, parallel-fluted grooves 2, which are provided with flat wire windings 4.
  • the flat wire winding 4, which is preferably designed as a toothed coil consists of flat wires 8, and is thus pushed for positioning within the grooves 2 only over the tooth 9.
  • opposing slots 5 On the side facing the physical air gap of the permanent magnet synchronous machine side of the groove 2 are opposing slots 5, in addition to a Nutver- wedge wedge 23 preferably a non-magnetic slot wedge can be used.
  • X is the distance of the conductor from the tooth end, the slot opening width s, d is the physical air gap of rotor represent (upper edge of permanent magnets or ⁇ rotor surface) and the lower edge of the wound tooth,
  • stator 1 is the top layer 11 of the flat wire winding 4 at a distance X from the tip of the tooth 12.
  • the basic structure of the stator 1 is thus that the located between the parallel flanking grooves 2 tooth 9 is surrounded by at least one formed as a toothed coil flat wire winding 4 Where ⁇ is unwound at the tooth 13 and the flat wire winding 4th only a predeterminable proportion of the groove 2, considered from the groove bottom 3 from.
  • FIG. 3 shows an arrangement according to FIG. 2, wherein the recessed groove space is at least partially occupied by cooling elements 20 or 21 shown by way of example.
  • the Kuhlelement 20 via the slots 5 is simultaneously positioned by lugs 22 of the Kuhlelements 20 in the groove 2.
  • the cooling element 21 is in particular still positioned by the Nutverschlußkeil 23 in the groove 2.
  • the Kuhliata 20, 21 are made of plastic or ceramic.
  • each Kuhlelement 20, 21 have multiple paralallel or in series Kuhlkanale.
  • the Kuhlelement 21 shows in this regard two parallel angeord ⁇ designated Kuhlkanale.
  • Such an interconnection is ideally carried out on the end faces of the stator 1. In this way, effective cooling of the winding system as well as of the adjacent teeth 9, 13 and thus of the stator 1 can be produced over the entire slots 2, in order to simultaneously achieve the above-mentioned positive effects to achieve.
  • the remaining groove space can also be completed by a round wire winding 25, since there make up the eddy current losses occurring a comparatively small proportion compared to a flat wire winding 4 positioned there.
  • This round wire winding 25 is advantageously also designed as a tooth coil.
  • At least two lying ubercha- tooth coils provide a around the tooth 9, which are electrically interconnected in a Klemmenkas ⁇ th or any other connection member.
  • One is made up of flat wires 8
  • the other is made up of Round wires is constructed and is closer to the air gap of the synchronous machine. Due to the flat wire winding 4 he ⁇ holds a relatively higher copper full factor, while the eddy current losses are kept m limits by the round wire winding 25.
  • toothed coils made of flat wire there are 2 toothed coils of round wire winding 25 and / or cooling elements 20, 21 and / or insulating material 26 in the grooves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne la réduction des pertes par courant de Foucault sur une machine synchrone à excitation permanente comprenant un stator (1), lequel présente au moins un système d'enroulement disposé dans des rainures (2), et un rotor muni d'aimants (7) permanents. Selon l'invention, la largeur d'une fente de rainure du stator (1) correspond à au moins 0,7 fois la largeur d'une rainure et le système d'enroulement présente des fils (8) plats massifs. Toujours selon l'invention, une zone prédéfinie de la rainure est dépourvue de fils (8) plats pour éviter les courants de Foucault dans les fils (8) plats.
PCT/EP2007/060430 2006-10-10 2007-10-02 Machine synchrone à excitation permanente avec enroulement à fil plat WO2008043688A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047975A DE102006047975A1 (de) 2006-10-10 2006-10-10 Permanenterregte Synchronmaschine mit Flachdrahtwicklung
DE102006047975.0 2006-10-10

Publications (1)

Publication Number Publication Date
WO2008043688A1 true WO2008043688A1 (fr) 2008-04-17

Family

ID=38859745

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060430 WO2008043688A1 (fr) 2006-10-10 2007-10-02 Machine synchrone à excitation permanente avec enroulement à fil plat

Country Status (2)

Country Link
DE (1) DE102006047975A1 (fr)
WO (1) WO2008043688A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11095172B2 (en) 2016-08-05 2021-08-17 Molabo Gmbh Electric machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5696694B2 (ja) * 2012-08-01 2015-04-08 トヨタ自動車株式会社 回転電機のステータ
DE102013212909A1 (de) * 2013-07-02 2015-01-08 Robert Bosch Gmbh Maschinenkomponente für eine elektrische Maschine mit mehreren Wicklungen
DE102019113432A1 (de) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Stator einer elektrischen Maschine und elektrische Maschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1100179A1 (fr) * 1999-11-09 2001-05-16 Atlas Copco Airpower N.V. Enroulement pour moteur ou alternateur
WO2004073144A1 (fr) * 2003-02-14 2004-08-26 Toyota Jidosha Kabushiki Kaisha Module a bobine de stator, procede de fabrication dudit module et machine electrique rotative
WO2006029992A1 (fr) * 2004-09-16 2006-03-23 Siemens Aktiengesellschaft Moteur synchrone a excitation permanente, a enroulements a fils plats

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316944C (fr) * 1917-05-17 1919-12-08
US3624432A (en) * 1969-12-19 1971-11-30 Bbc Brown Boveri & Cie Arrangement for securing electrical conductor bars within slots to prevent vibration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1100179A1 (fr) * 1999-11-09 2001-05-16 Atlas Copco Airpower N.V. Enroulement pour moteur ou alternateur
WO2004073144A1 (fr) * 2003-02-14 2004-08-26 Toyota Jidosha Kabushiki Kaisha Module a bobine de stator, procede de fabrication dudit module et machine electrique rotative
WO2006029992A1 (fr) * 2004-09-16 2006-03-23 Siemens Aktiengesellschaft Moteur synchrone a excitation permanente, a enroulements a fils plats

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11095172B2 (en) 2016-08-05 2021-08-17 Molabo Gmbh Electric machine

Also Published As

Publication number Publication date
DE102006047975A1 (de) 2008-04-17

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