WO2008043688A1 - Permanent magnet synchronous machine with flat wire winding - Google Patents

Permanent magnet synchronous machine with flat wire winding 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
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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)
French (fr)
Inventor
Detlef Potoradi
Holger Schunk
Rolf Vollmer
Original Assignee
Siemens Aktiengesellschaft
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Publication of WO2008043688A1 publication Critical patent/WO2008043688A1/en

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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.

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

Abstract

The eddy current losses are reduced in the case of a permanent magnet synchronous machine with a stator (1), which has at least one winging system arranged in slots (2) and a rotor provided with permanent magnets (7), wherein the width of a slot opening of the stator (1) at least corresponds to 0.7 times the slot width, wherein the winding system has solid flat wires (8), and wherein a predeterminable region of the slot is free of flat wires (8) in order to avoid eddy currents in the flat wires (8).

Description

Beschreibungdescription
Permanenterregte Synchronmaschine mit FlachdrahtwicklungPermanent magnet synchronous machine with flat wire winding
Die Erfindung betrifft eine permanenterregte Synchronmaschine mit einem Stator, der eine nutenangeordnete Wicklungssystem aufweist und einem mit Permanentmagnet versehenen Rotor, wobei das Wicklungssystem massive Flachdrahte aufweist.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.
Permanenterregte Synchronmaschinen weisen ein Wicklungssystem in ihren Nuten auf, dass durch Deckschieber oder Nutver- schlusskeile gesichert ist. Um hohe Nutfullfaktoren zu erreichen, sind die Leiter des Wicklungssystems hochkant gewickelt mit Flachdrahten bestuckt. Dabei dringt aber durch die offe- nen Nutschlitze das von den Permanentmagneten erzeugte Feld vergleichsweise tief in den Nutenraum ein. Da sich dieses von den Permanentmagnet erzeugte Feld mit der Drehzahl des Rotors bewegt, entsteht in dem Rotor zugewandten Teil der Nut ein Wechselfeld. Dieses Wechselfeld erzeugt nun in den massiven Flachdrahten unerwünschte Kreisstrome, die zu hohen drehzahl- abhangigen Verlusten fuhren. Diese Verluste dominieren bei höheren Drehzahlen das thermische Verhalten dieser Motoren.Permanently excited synchronous machines have a winding system in their grooves, which is secured by cover slide or Nutverschauskekeile. In order to achieve high groove fill factors, the conductors of the winding system are wound upright wound with flat wires. However, due to the open slot slots, the field generated by the permanent magnets penetrates comparatively deep into the slot space. As 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.
Dieses Problem wurde versucht durch den Einsatz magnetisch leitender Nutverschlusse zu losen. Die Wirkung dieser Nutver- schlusskeile besteht nunmehr darin, dass deren magnetische Leitfähigkeit das in die Nut eindringende Feld in die Zahne umleitet und so das Nutinnere abschirmt. Nachteilig dabei sind allerdings, dass die Sattigungsinduktion dieses Materi- als der leitenden Nutverschlusskeile bei unter 50% des Wertes des verwendeten Elektroblechs liegt, somit ist dieses Materi¬ al der Nutverschlusskeile lediglich in der Lage, einen Teil des Streuflusses in der Nut abzuschirmen bevor es in Sättigung geht und sich damit magnetisch wie Luft verhalt.This problem has been attempted by using magnetically conductive slot closures. The effect of these slot wedges is now that their magnetic conductivity diverts the penetrating into the groove field in the teeth and thus shields the Nutinnere. , Are disadvantageous in this case, however, that the Sattigungsinduktion, this Materi- as the conductive slot wedges less than 50% of the value of the electrical steel sheet used, thus this Materi ¬ al the slot wedges, only capable of a portion of the leakage flux is to be shielded in the groove before it in Saturation goes and behaves magnetically as air.
Des Weiteren wird durch die Platzierung des Deckschiebers am Nutgrund auch zum Teil der drehmomentbildende Fluss der Standerwicklung kurzgeschlossen, was zu einer Verringerung der Drehmomentkonstanten fuhrt. D.h. trotz Nutverschlusskeil treten in einem permanenterregten Synchronmotor erheblrche Zu¬ satzverluste auf.Furthermore, 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.
Der Erfindung liegt nunmehr das Problem zugrunde, eine permanenterregte Synchronmaschine mit einem Wicklungssystem zu schaffen, bei der das thermische Verhalten optimiert wird und die thermischen Verluste der Flachdrahtwicklungen reduziert werden .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.
Die Aufgabe wird erfindungsgemaß gelost durch eine permanenterregte Synchronmaschine mit einem Stator, der ein in Nuten angeordnetes Wicklungssystem aufweist und einem mit Permanentmagneten versehenen Rotor, wobei das Wicklungssystem mas- sive Flachdrahte aufweist, und wobei ein vorgebbarer Bereich der Nut frei von Flachdrahten ist um die Wickelstrome in den Flachdrahten zu vermeiden.According to the invention, 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.
Vorteilhafterweise entspricht die Breite eines Nutschlitzes des Stators zumindest dem 0,7-fachen der Nutbreite.Advantageously, the width of a slot slot of the stator is at least 0.7 times the slot width.
Damit wird eine erhebliche Reduktion der Zusatzverluste der permanenterregten Synchronmaschine erreicht. Nachteilig dabei ist zwar, dass das Stillstandsmoment aufgrund der geringeren Kupferflache vergleichsweise absinkt, allerdings wird dieser Nachteil bei Weitem dadurch aufgehoben, dass die permanenterregte Synchronmaschine bei wesentlichen höheren Drehzahlen betrieben werden kann.This achieves a considerable reduction of the additional losses of the permanent-magnet synchronous machine. The disadvantage here is that the standstill torque due to the lower copper area decreases relatively, however, this disadvantage is largely offset by the fact that the permanent magnet synchronous machine can be operated at significantly higher speeds.
Vorteilhafterweise ist nunmehr die Hohe der Leiter in der Nut um ca. 15% reduziert, was gegenüber einer vollständigen belegten Nut ungefähr die Hohe einer Leiterbreite bei Flachdrahten ausmacht. Die Leiter rucken also eine Leiterbreite weiter in Richtung Nutgrund.Advantageously, 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.
Berechnungen zeigten eine Verminderung der induzierten Ver¬ luste im Leerlauf um 55%, da diese bei höheren Drehzahlen thermisch dominant sind, wird unter anderem erst dadurch er- moglicht, den Motoren bei bestimmten Drehzahlen zu betreiben. Vorteilhafterweise wird der Abstand der Leiter vom Zahnende nach folgender Ausfuhrungsvorschrift eingestellt.Calculations showed a reduction in the induced Ver ¬ losses in the idle to 55%, since these are thermally dominant at higher speeds, it is, inter alia, only ER characterized allows to operate the engines at certain speeds. Advantageously, the distance of the conductors from the tooth end is set according to the following specification.
X großer gleich 1^ x (s/2 - d)X big equal to 1 ^ x (s / 2 - d)
wobeiin which
X der Abstand der Leiter vom zahnende, s die Nutschlitzbreite, d der physikalische Luftspalt von Rotor (Oberkante Permanent¬ magnete oder Oberflache Rotor) und Unterkante des bewickelten Zahns darstellen und s mindestens funf-mal so groß ist wie der Luftspalt d.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.
Der so entstandene Raum mit der Querschnittsflache s mal X und der Lange 1 (Lange des Blechpakets) wird vorteilhafterweise mit elektrisch nicht leitendem Material und/oder einer Wasserkühlung oder aber auch einem weiteren Wicklungssystem aus Runddrahten belegt, das die Wirbelstromverluste ebenfalls reduziert .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.
Die Erfindung sowie weitere Vorteile der Erfindung gemäß Merkmalen der Unteranspruche sind in dem folgenden Ausfuh- rungsbeispiel prinzipiell dargestellt. Dabei zeigen:The invention as well as further advantages of the invention according to features of the subclaims are shown in principle in the following embodiment. Showing:
FIG 1 eine prinzipielle Darstellung eines permanenterregten1 shows a schematic representation of a permanent-magnet
Synchronmotors,Synchronous motor,
FIG 2 bis 5 Teilquerschnitte eines Statorblechpakets, mit je- weils unterschiedlichen Ausfuhrungen der zum Luftspalt weisenden Nuten.2 to 5 partial cross sections of a laminated stator core, each with different configurations of the grooves pointing towards the air gap.
FIG 1 zeigt in prinzipieller Darstellung einen permanenterregte Synchronmaschine, mit axial verlaufenden paarweise pa- rallelflankigen Nuten 2 im Stator 1, die jeweils einen Zahn 9 bilden. Die Nutschlitzbreite entspricht dabei der Nutbreite. Der Zahn 9 ist jeweils von einer Zahnspule umgeben, die aus Flachdrahten 8 hergestellt ist, wobei die Flachdrahte 8 mit ihrer, im Querschnitt betrachteten Langsachse im Wesentlichen tangential zum Rotor 6 angeordnet sind.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.
Der Rotor 6 ist mit Permanentmagneten 7 versehen, die entwe- der an der Oberflache des Rotors 6 oder „vergraben" angeordnet sind.The rotor 6 is provided with permanent magnets 7, which are arranged either on the surface of the rotor 6 or "buried".
FIG 2 zeigt einen Ausschnitt eines Querschnitts eines Stators 1 der zwei benachbarte, parallelflankige Nuten 2 aufweist, die mit Flachdrahtwicklungen 4 versehen sind. Die Flachdrahtwicklung 4, die vorzugsweise als Zahnspule ausgebildet ist besteht aus Flachdrahten 8, und wird somit zur Positionierung innerhalb der Nuten 2 lediglich über den Zahn 9 geschoben. Auf der dem physikalischen Luftspalt der permanenterregten Synchronmaschine zugewandten Seite der Nut 2 befinden sich gegenüberliegende Schlitze 5, in die zusätzlich ein Nutver- schlusskeil 23 vorzugsweise ein amagnetischer Nutverschlusskeil eingesetzt werden kann.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. 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.
Gemäß der AusfuhrungsvorschriftAccording to the specification
X großer gleich 1^ x (s/2 - d)X big equal to 1 ^ x (s / 2 - d)
wobei X der Abstand der Leiter vom Zahnende, s die Nutschlitzbreite, d der physikalische Luftspalt von Rotor (Oberkante Permanent¬ magnete oder Oberflache Rotor) und Unterkante des bewickelten Zahns darstellen,wherein 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,
befindet sich die oberste Lage 11 der Flachdrahtwicklung 4 im Abstand X von der Spitze des Zahnes 12. Der prinzipielle Aufbau des Stators 1 ist somit, dass der zwischen den parallel- flankigen Nuten 2 befindliche Zahn 9 von zumindest einer als Zahnspule ausgebildeten Flachdrahtwicklung 4 umgeben ist, wo¬ bei der Zahn 13 unbewickelt ist und die Flachdrahtwicklung 4 nur einen vorgebbaren Anteil der Nut 2, vom Nutgrund 3 aus betrachtet einnimmt.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 zeigt eine Anordnung nach FIG 2, wobei der ausgesparte Nutraum durch beispielhaft dargestellte Kuhlelemente 20 oder 21 zumindest teilweise eingenommen wird.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.
Dabei ist das Kuhlelement 20 über die Schlitze 5 gleichzeitig durch Nasen 22 des Kuhlelements 20 in der Nut 2 positioniert.In this case, the Kuhlelement 20 via the slots 5 is simultaneously positioned by lugs 22 of the Kuhlelements 20 in the groove 2.
Das Kuhlelement 21 wird insbesondere noch durch den Nutver- schlusskeil 23 in der Nut 2 positioniert.The cooling element 21 is in particular still positioned by the Nutverschlußkeil 23 in the groove 2.
Die Kuhlelemente 20, 21 sind aus Kunststoff oder Keramik.The Kuhlelemente 20, 21 are made of plastic or ceramic.
Des Weiteren kann natürlich jedes Kuhlelement 20, 21 mehrere pararallele oder in Reihe geschaltete Kuhlkanale aufweisen. Das Kuhlelement 21 zeigt diesbezüglich zwei parallel angord¬ nete Kuhlkanale. Eine derartige Verschaltung erfolgt ldealer- weise an den Stirnseiten des Stators 1. Damit kann über die gesamte Nuten 2 eine wirksame Kühlung des Wicklungssystems als auch der benachbarten Zahne 9, 13 und somit des Stators 1 hergestellt werden, um somit gleichzeitig die oben genannten positiven Effekte zu erzielen.Furthermore, of course, 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.
Nach FIG 4 kann der verbleibende Nutraum auch durch eine Runddrahtwicklung 25 ergänzend ausgefüllt werden, da dort die auftretenden Wirbelstromverluste einen vergleichsweise geringen Anteil gegenüber einer dort positionierten Flachdraht- Wicklung 4 ausmachen.According to FIG 4, 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.
Diese Runddrahtwicklung 25 ist vorteilhafterweise ebenfalls als Zahnspule ausgeführt.This round wire winding 25 is advantageously also designed as a tooth coil.
Somit stellen sich um den Zahn 9 zumindest zwei ubereinander- liegende Zahnspulen ein, die elektrisch in einem Klemmenkas¬ ten oder sonstigen Anschlusselement verschaltbar sind. Die eine ist aus Flachdrahten 8 aufgebaut, wahrend die andere aus Runddrahten aufgebaut ist und sich naher am Luftspalt der Synchronmaschine befindet. Durch die Flachdrahtwicklung 4 er¬ halt man eine vergleichsweise höheren Kupferfullfaktor, wahrend durch die Runddrahtwicklung 25 die Wirbelstromverluste m Grenzen gehalten werden.Thus, at least two lying ubereinander- 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, while 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.
FIG 5 zeigt, dass der verbleibende Nutraum auch durch eine Isolierstoffmasse 26 ausgefüllt ist.5 shows that the remaining groove space is also filled by an insulating material 26.
Selbstverständlich sind auch Kombinationen der Ausfuhrungsformen vorstellbar, d.h. neben den Zahnspulen aus Flachdraht gibt es in den Nuten 2 Zahnspulen aus Runddrahtwicklung 25 und/oder Kuhlelementen 20, 21 und/oder Isolierstoffmasse 26. Of course, combinations of the embodiments are conceivable, i. In addition to the 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.

Claims

Patentansprüche claims
1. Permanenterregte Synchronmaschine mit einem Stator (1), der zumindest ein in Nuten (2) angeordnetes Wicklungssystem aufweist und einem mit Permanentmagneten (7) versehenen Rotor, wobei das Wicklungssystem massive Flachdrahte (8) auf¬ weist, und wobei ein vorgebbarer Bereich der Nut frei von Flachdrahten (8) ist, um Wirbelstrome in den Flachdrahten (8) zu vermeiden.1. Permanent magnet synchronous machine with a stator (1), having at least one in grooves (2) arranged winding system and provided a permanent magnet (7) rotor, the winding system comprises solid flat wire (8) on ¬, and wherein a predeterminable region of the Groove is free of flat wires (8), to avoid eddy currents in the flat wires (8).
2. Permanenterregte Synchronmaschine nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Breite2. Permanent magnet synchronous machine according to claim 1, characterized in that the width d
(s) eines Nutschlitzes des Stators (1) zumindest dem 0,7- fachen der Nutbreite entspricht.(S) corresponds to a slot slot of the stator (1) at least 0.7 times the groove width.
3. Permanenterregte Synchronmaschine nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass der freie Bereich der Nut von Kuhlelementen (20,21) eingenommen wird um eine Wasserkuhlungsanordnung für die Synchronmaschine zu schaffen.3. Permanent magnet synchronous machine according to claim 1 or 2, characterized in that the free area of the groove of Kuhlelementen (20,21) is taken to create a Wasserkuhlungsanordnung for the synchronous machine.
4. Permanenterregte Synchronmaschine nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h ¬ n e t , dass der nicht von Flachdrahten (8) belegte Bereich der Nut (2) von Runddrahten (8) belegt ist.4. Permanent magnet synchronous machine according to one of the preceding claims, dadurchgekennzeich ¬ net, that is not occupied by flat wires (8) occupied area of the groove (2) of round wires (8).
5. Permanenterregte Synchronmaschine nach einem der vorherge¬ henden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass der freie Bereich der Nut von elektrisch nicht leitendem Material (26) belegt ist.5. Permanent magnet synchronous machine according to one of vorherge ¬ existing claims, characterized in that the free region of the groove is occupied by electrically non-conductive material (26).
6. Permanenterregte Synchronmaschine nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die jeweils zwei nebeneinander liegenden Nuten (2) parallelflankig ausgerichtet sind.6. Permanent-magnet synchronous machine according to one of the preceding claims, characterized in that the two adjacent grooves (2) are aligned parallel flanking in each case.
7. Permanenterregte Synchronmaschine nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t , dass bei paral- lelflankigen Nuten (2) die Beziehung X großer gieren ^ mal (s halbe mrnus d) gilt, wober X der Abstand des Flachleiters vom Zahnende rst, s dre Nutschlrtzbrerte und d der physrkalrsche Luftspalt von Oberkante Rotor (6) brs Unterkante Zahn (9) .7. Permanent magnet synchronous machine according to claim 6, characterized in that at parallel (2) the relationship X is great y ^ times (s half mrnus d), where X the distance of the flat conductor from the tooth end rst, s dre Nutrtrtzbrerte and d the physrkalrsche air gap of upper edge rotor (6) brs lower edge tooth (9) ,
8. Permanenterregte Synchronmaschine nach einem der vorherge¬ henden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die Nuten (2) von einem Nutverschlusskeil (23) abgeschlossen sind. 8. Permanent magnet synchronous machine according to one of vorherge ¬ henden claims, characterized in that the grooves (2) of a slot closure wedge (23) are completed.
PCT/EP2007/060430 2006-10-10 2007-10-02 Permanent magnet synchronous machine with flat wire winding WO2008043688A1 (en)

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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 (en) * 2012-08-01 2015-04-08 トヨタ自動車株式会社 Rotating electric machine stator
DE102013212909A1 (en) * 2013-07-02 2015-01-08 Robert Bosch Gmbh Machine component for a multi-winding electrical machine
DE102019113432A1 (en) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric machine stator and electric machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1100179A1 (en) * 1999-11-09 2001-05-16 Atlas Copco Airpower N.V. Winding for a motor or a generator
WO2004073144A1 (en) * 2003-02-14 2004-08-26 Toyota Jidosha Kabushiki Kaisha Stator coil module, method of manufacturing the same, and electric rotating machine
WO2006029992A1 (en) * 2004-09-16 2006-03-23 Siemens Aktiengesellschaft Permanently-stimulated synchronous motor with flat-wire windings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316944C (en) * 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 (en) * 1999-11-09 2001-05-16 Atlas Copco Airpower N.V. Winding for a motor or a generator
WO2004073144A1 (en) * 2003-02-14 2004-08-26 Toyota Jidosha Kabushiki Kaisha Stator coil module, method of manufacturing the same, and electric rotating machine
WO2006029992A1 (en) * 2004-09-16 2006-03-23 Siemens Aktiengesellschaft Permanently-stimulated synchronous motor with flat-wire windings

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

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