EP2483993A2 - Rotor - Google Patents

Rotor

Info

Publication number
EP2483993A2
EP2483993A2 EP10763170A EP10763170A EP2483993A2 EP 2483993 A2 EP2483993 A2 EP 2483993A2 EP 10763170 A EP10763170 A EP 10763170A EP 10763170 A EP10763170 A EP 10763170A EP 2483993 A2 EP2483993 A2 EP 2483993A2
Authority
EP
European Patent Office
Prior art keywords
rotor
rotor body
permanent magnets
cuff
pockets
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.)
Withdrawn
Application number
EP10763170A
Other languages
German (de)
French (fr)
Inventor
Ulrich Hartmann
Oliver Memminger
Joachim Mucha
Matthias Tutsch
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
Publication of EP2483993A2 publication Critical patent/EP2483993A2/en
Withdrawn legal-status Critical Current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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49012—Rotor

Definitions

  • the invention relates to a rotor body with permanent magne ⁇ th a rotary dynamoelectric machine.
  • the permanent magnets are mounted in permanent magnet synchronous machines by very large manufacturing effort on the rotor body.
  • EP 1 860 755 A2 describes a possibility in which a base body carries a magnet, which in turn is held by a covering hood and screws on the base body, wherein the base body itself is fastened to a holder.
  • a synchronous linear motor is known, with a primary part provided with a winding and a secondary part, which consists of an elongated Tooplat ⁇ te, in compliance with the Polillersrasterma- ßes from brittle and korrosionsan devisem material best-. Hanging, finished magnetized permanent magnets are glued.
  • the solution of the object is achieved by a rotor of a rotary dynamoelectric machine with permanent magnets, which are arranged on the circumference of a rotor body, wherein the permanent magnets are positioned and fixed by at least one circumferentially closed cuff.
  • the sleeve is a comparatively easy to manufacture ⁇ the component made of sheet metal, which is preferably made of a metal or fiberglass. It is placed as a complete draw ⁇ edged sleeve around the rotor body and is fixed on it by spot welding, rivets or screws. These attachment means are preferably used in the directly adjacent to the rotor body portions of the sleeve, so the pole gaps.
  • each pocket forms a pole, each formed by a single magnet.
  • each pole is formed by a plurality of individual magnets which are arranged inside a pocket axially behind one another and / or next to one another. This facilitates assembly because the magnet for controlling Strengthens ⁇ te are lower. Furthermore, the storage of the permanent magnets is optimized, since now with a plurality of identical permanent magnets, which are advantageously designed cuboid, different diameters, under ⁇ different axial lengths of the rotor body and different Poannonen can be realized on the rotor body.
  • the cuff forms a circumferentially closed
  • the rotor body Component on the rotor body, so that the rotor body optionally viewed over its axial length has one or more ⁇ re such cuffs.
  • the cuff is part of a tiered Endlosma ⁇ terials on a roll with a predetermined width.
  • the material is now removed from the roller and fixed, for example, by an overlap of the sleeve ends in the pole gap by the fastening means on the rotor body.
  • the continuous material is of such a material thickness in ra ⁇ dialer direction, so that bending during assembly as well as a sufficient retention of the permanent magnets in the operating the dynamoelectric machine is ensured.
  • the cuff according to the invention thus also facilitates the design of pockets in the case of external and internal rotors and the retention of the permanent magnets.
  • the cuff can be divided into individual circumferentially extending segments, so that, for example, cuff parts which form two or more pockets, in particular by overlapping be fixed in the area of the pole gaps on the rotor body.
  • FIG. 3 is a perspective view of a partial section of a cuff
  • FIG. 4 shows a perspective view of a sleeve of a
  • FIG. 6 shows a partial cross section of an inner rotor.
  • a rotor 1 of a permanent-magnet synchronous machine for wind power generators or tidal power plants, with a rated power in particular greater than 1 MW, is designed as a solid or solid rotor body 4 in the axial direction.
  • a closed cuff 2 is in the circumferential direction be ⁇ seeks arranged, considered to ⁇ together with the surface of the rotor body 4 in the axial Rich ⁇ tung pockets 8 formed in which the perma- to nentmagnete 3 are located.
  • Perma ⁇ nentmagnete 3 can be arranged per axially extending pocket 8 behind the other and / or next to each other. This has in particular for the storage of the permanent magnets 3 advantages, since thus different pole widths can be formed on the rotor body 4 with the existing permanent magnet 3.
  • this rotor body 1 is shrunk onto a shaft 7 or connected in a rotationally fixed manner in another way. Since, in particular in wind turbines that are to have the lowest possible mass in the nacelle is arranged ⁇ electrical equipment, advantageously the rotor 1, as shown in FIG 1 schematically by a Speichenan- arrangement 9 with the shaft 7 is connected.
  • the rotor body 4 only has only a radially magnetically required thickness. This rotor body 4 designed in this way is mechanically connected to the spoke arrangement 9.
  • FIG. 2 shows a rotor 1 of an outer rotor of a permanent ⁇ excited dynamoelectric synchronous machine, in which the sleeve 2 is arranged on the inside of the rotor body 4, and there is also axially extending pockets 8 ausbil ⁇ det, in which permanent magnets 3 are used.
  • FIG. 3 shows in perspective view a partial section of a sleeve 2 with the gradations and with ⁇ stuffs for fixing the cuff 2 on the rotor body 4. This is exemplified realized in FIG 3 by means of pre-punched holes in the pole gaps of the sleeve 2, this Lü- can be bolted or riveted to the rotor body 4.
  • a plurality of axially distributed fastening means are to be provided per pole gap.
  • FIG. 4 shows, in a further perspective illustration, the basic arrangement of the sleeve 2 on a rotor body 4 of an external rotor motor. There, for example, closes the sleeve 2 with the rotor body 4 axially flush.
  • FIG. 5 shows in a section a partial cross section of an external rotor, in which, on the rotor body 4, by fastening 5, which hold the cuff 2 on the rotor body 4 as rivets or screws, the permanent magnets 3 are finally positioned on the rotor body 4.
  • the permanent magnets 3 are used, which can be stand ⁇ shown in principle also consist of several individual magnets per bag 8, and / or axially behind one another and / or arranged side by side above the other.
  • the pockets are formed 8 through the cylindrically shaped surface of the Rotorkör ⁇ pers 4, and the steepness of the cuff. 2
  • the step is designed in such a way that the pockets 8 have cross-sections which are rectangular in shape, taking into account the curvature of the surface of the rotor body 4 substantially.
  • the surface of the rotor body 4 is already provided with axial grooves, which together with the stage of the cuff 2 pockets 8 form.
  • the permanent magnets are fixed by a potting 3 additional 6 in their Ta ⁇ rule. 8

Landscapes

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

Abstract

The invention relates to a rotor (1) of a rotating dynamoelectric machine, comprising permanent magnets (3) which are arranged on the circumference of the rotor base (4), said permanent magnets (3) being positioned and secured by at least one collar (2) which is closed in circumferential direction.

Description

Beschreibung description
Rotor Die Erfindung betrifft einen Rotorkörper mit Permanentmagne¬ ten einer rotativen dynamoelektrischen Maschine. The invention relates to a rotor body with permanent magne ¬ th a rotary dynamoelectric machine.
Insbesondere bei großen dynamoelektrischen Maschinen (Motoren oder Generatoren) für z.B. getriebelose Turbinen von Wind- kraft oder Gezeitenkraftwerken werden die Permanentmagnete bei permanenterregten Synchronmaschinen durch sehr großen fertigungstechnischen Aufwand auf dem Rotorkörper befestigt. Especially with large dynamoelectric machines (motors or generators) for e.g. Gearless turbines of wind power or tidal power plants, the permanent magnets are mounted in permanent magnet synchronous machines by very large manufacturing effort on the rotor body.
So ist beispielsweise in der EP 1 860 755 A2 eine Möglichkeit beschrieben, bei der ein Grundkörper einen Magnet trägt, der wiederum durch eine Abdeckhaube und Schrauben am Grundkörper gehalten wird, wobei der Grundkörper selbst an einer Halterung befestigt ist. Aus der DE 195 03 511 AI ist ein Synchron-Linearmotor bekannt, mit einem mit einer Wicklung versehenen Primärteil und einem Sekundärteil, das aus einer langgestreckten Trägerplat¬ te besteht, auf der unter Einhaltung des Polteilungsrasterma- ßes die aus sprödem und korrosionsanfälligem Material beste- henden, fertig aufmagnetisierten Permanentmagnete festgeklebt sind. Um die fertig aufmagnetisierten Permanentmagnete mit geringem Herstellungsaufwand und mit hoher Präzision am Se¬ kundärteil festkleben zu können, wird dort vorgeschlagen, dass zwischen den fertig aufmagnetisierten Permanentmagneten dem Polteilungsrastermaß des Synchron-Linearmotors entspre¬ chende Distanzelemente angeordnet sind. Diese werden an¬ schließend durch eine Abdeckplatte zusätzlich geschützt. Thus, for example, EP 1 860 755 A2 describes a possibility in which a base body carries a magnet, which in turn is held by a covering hood and screws on the base body, wherein the base body itself is fastened to a holder. From DE 195 03 511 AI a synchronous linear motor is known, with a primary part provided with a winding and a secondary part, which consists of an elongated Trägerplat ¬ te, in compliance with the Polteilungsrasterma- ßes from brittle and korrosionsanfälligem material best-. Hanging, finished magnetized permanent magnets are glued. To be able to stick to the finished magnetized permanent magnets with low manufacturing cost and with high precision on the secondary part, it is suggested there that entspre ¬ sponding spacer elements are arranged between the permanent magnet magnetized finished the Polteilungsrastermaß of the synchronous linear motor. These are at ¬ closing additionally protected by a cover plate.
Bei all diesen Befestigungen von Permanentmagneten auf einem Rotorkörper ist der fertigungstechnische Aufwand vergleichs¬ weise hoch. Ausgehend davon liegt der Aufgabe zugrunde, einen Rotorkörper insbesondere für permanenterregte Synchronmaschinen mit Nenn¬ leistungen größer 1 MW zu schaffen, auf dem mit vergleichsweise geringem Aufwand die Permanentmagnete positioniert und fixiert werden. In all these fixings of permanent magnets on a rotor body of manufacturing complexity is comparatively ¬ way high. Assuming the object is based is to provide a rotor body particularly for permanent-magnet synchronous machines with rated ¬ services greater than 1 MW, are positioned the permanent magnets on the comparatively low cost and fixed.
Die Lösung der gestellten Aufgabe gelingt durch einen Rotor einer rotativen dynamoelektrischen Maschine mit Permanentmagneten, die am Umfang eines Rotorkörpers angeordnet sind, wo- bei die Permanentmagnete durch zumindest eine in Umfangsrich- tung geschlossene Manschette positioniert und fixiert sind. The solution of the object is achieved by a rotor of a rotary dynamoelectric machine with permanent magnets, which are arranged on the circumference of a rotor body, wherein the permanent magnets are positioned and fixed by at least one circumferentially closed cuff.
Die Lösung der gestellten Aufgabe gelingt ebenfalls durch ein Verfahren zur Herstellung eines Rotors durch folgende Schrit- te : The solution of the problem is also achieved by a method for producing a rotor by the following steps:
- Bereitstellen eines Rotorkörpers,  Providing a rotor body,
- Anlegen der Manschette oder Manschettenteile am Umfang des Rotorkörpers, so dass sich axial verlaufende Taschen aus¬ bilden, - applying the sleeve or sleeve parts on the circumference of the rotor body, so that axially extending pockets form ¬
- axiales Einschieben von Permanentmagneten in die axial verlaufenden Taschen, so dass sich Pole am Rotorkörper ausbilden, axial insertion of permanent magnets into the axially extending pockets so that poles are formed on the rotor body,
- Vergießen der Permanentmagnete in den Taschen. Die Manschette ist ein vergleichsweise einfach herzustellen¬ des Bauteil aus Formblech, das vorzugsweise aus einem Metall oder GFK hergestellt wird. Sie wird als eine komplette abge¬ kantete Manschette um den Rotorkörper gelegt und wird auf ihm durch Punktschweißen, Nieten oder Schrauben befestigt. Diese Befestigungsmittel werden vorzugsweise in den direkt auf dem Rotorkörper anliegenden Abschnitten der Manschette, also den Pollücken eingesetzt. - Potting the permanent magnets in the pockets. The sleeve is a comparatively easy to manufacture ¬ the component made of sheet metal, which is preferably made of a metal or fiberglass. It is placed as a complete abge ¬ edged sleeve around the rotor body and is fixed on it by spot welding, rivets or screws. These attachment means are preferably used in the directly adjacent to the rotor body portions of the sleeve, so the pole gaps.
Durch diese Anordnung entstehen vorteilhafterweise axial ver- laufende Taschen, in die die Permanentmagnete axial einge¬ schoben und anschließend vergossen werden. Damit werden in einfacher Art und Weise Pole auf dem Rotorkörper gebildet. Somit bildet jede Tasche einen Pol, der jeweils durch einen Einzelmagnete gebildet wird. By this arrangement is advantageously axially displaceable running pockets into which the permanent magnets are axially inserted ¬ pushed and then shed formed. This poles are formed on the rotor body in a simple manner. Thus, each pocket forms a pole, each formed by a single magnet.
In einer weiteren Ausführungsform wird jeder Pol durch mehre- re Einzelmagnete gebildet, die innerhalb einer Tasche axial hintereinander und/oder nebeneinander angeordnet sind. Dies erleichtert die Montage, da die zu beherrschenden Magnetkräf¬ te geringer sind. Des weiteren wird die Lagerhaltung der Permanentmagnete optimiert, da nunmehr mit einer Vielzahl von gleichen Permanentmagneten, die vorteilhafterweise quaderförmig ausgeführt sind, unterschiedliche Durchmesser, unter¬ schiedliche axiale Längen der Rotorkörper und verschiedene Poteilungen auf dem Rotorkörper realisiert werden können. Die Manschette bildet ein in Umfangsrichtung geschlossenesIn a further embodiment, each pole is formed by a plurality of individual magnets which are arranged inside a pocket axially behind one another and / or next to one another. This facilitates assembly because the magnet for controlling Strengthens ¬ te are lower. Furthermore, the storage of the permanent magnets is optimized, since now with a plurality of identical permanent magnets, which are advantageously designed cuboid, different diameters, under ¬ different axial lengths of the rotor body and different Poteilungen can be realized on the rotor body. The cuff forms a circumferentially closed
Bauteil auf dem Rotorkörper, so dass der Rotorkörper gegebenenfalls über seine axiale Länge betrachtet einen oder mehre¬ re derartige Manschetten aufweist. Idealerweise ist die Manschette Teil eines stufigen Endlosma¬ terials auf einer Rolle mit einer vorgebbaren Breite. Je nach Umfang des Rotorkörpers wird nun das Material von der Rolle genommen und beispielsweise durch eine Überlappung der Manschettenenden in der Pollücke durch die Befestigungsmittel auf dem Rotorkörper fixiert. Component on the rotor body, so that the rotor body optionally viewed over its axial length has one or more ¬ re such cuffs. Ideally, the cuff is part of a tiered Endlosma ¬ terials on a roll with a predetermined width. Depending on the circumference of the rotor body, the material is now removed from the roller and fixed, for example, by an overlap of the sleeve ends in the pole gap by the fastening means on the rotor body.
Das Endlosmaterial weist eine derartige Materialdicke in ra¬ dialer Richtung auf, so dass ein Biegen während der Montage als auch ein ausreichender Halt der Permanentmagnete im Be- trieb der dynamoelektrischen Maschine gewährleistet ist. The continuous material is of such a material thickness in ra ¬ dialer direction, so that bending during assembly as well as a sufficient retention of the permanent magnets in the operating the dynamoelectric machine is ensured.
Durch die erfindungsgemäße Manschette wird somit auch die Gestaltung von Taschen bei Außen- und Innenläufern und der Halt der Permanentmagnete leicht ermöglicht. In einer alternativen Ausführungsform kann die Manschette in einzelne in Umfangsrichtung verlaufende Segmente unterteilt werden, so dass beispielsweise Manschettenteile, die zwei oder mehrere Taschen bilden, insbesondere durch Überlappung im Bereich der Pollücken auf dem Rotorkörper befestigt werden . The cuff according to the invention thus also facilitates the design of pockets in the case of external and internal rotors and the retention of the permanent magnets. In an alternative embodiment, the cuff can be divided into individual circumferentially extending segments, so that, for example, cuff parts which form two or more pockets, in particular by overlapping be fixed in the area of the pole gaps on the rotor body.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung sind in den prinzipiell dargestellten Zeichnungen näher erläutert. Darin zeigen: The invention and further advantageous embodiments of the invention are explained in more detail in the drawings shown in principle. Show:
FIG 1 einen Rotor eines Innenläufers, 1 shows a rotor of an internal rotor,
FIG 2 einen Rotor eines Außenläufers, 2 shows a rotor of an external rotor,
FIG 3 perspektivische Darstellung eines Teilausschnitts einer Manschette, 3 is a perspective view of a partial section of a cuff,
FIG 4 eine perspektivische Darstellung einer Manschette eines 4 shows a perspective view of a sleeve of a
Außenläufers , Outside runner,
FIG 5 einen Teilquerschnitt eines Außenläufers, 5 shows a partial cross section of an external rotor,
FIG 6 einen Teilquerschnitt eines Innenläufers. 6 shows a partial cross section of an inner rotor.
Ein Rotor 1 einer permanenterregten Synchronmaschine für Windkraftgeneratoren oder Gezeitenkraftwerke, mit einer Nennleistung insbesondere größer 1 MW, ist als in axialer Rich- tung geblechter oder massiver Rotorkörper 4 ausgebildet. An der Oberfläche des Rotorkörpers 4 ist in Umfangsrichtung be¬ trachtet eine geschlossene Manschette 2 angeordnet, die zu¬ sammen mit der Oberfläche des Rotorkörpers 4 in axialer Rich¬ tung betrachtet Taschen 8 ausbildet, in denen sich die Perma- nentmagnete 3 befinden. A rotor 1 of a permanent-magnet synchronous machine for wind power generators or tidal power plants, with a rated power in particular greater than 1 MW, is designed as a solid or solid rotor body 4 in the axial direction. On the surface of the rotor body 4 a closed cuff 2 is in the circumferential direction be ¬ seeks arranged, considered to ¬ together with the surface of the rotor body 4 in the axial Rich ¬ tung pockets 8 formed in which the perma- to nentmagnete 3 are located.
Dabei können pro axial verlaufender Tasche 8 mehrere Perma¬ nentmagnete 3 hintereinander und/oder auch nebeneinander angeordnet werden. Dies hat insbesondere für die Lagerhaltung der Permanentmagnete 3 Vorteile, da somit unterschiedliche Polweiten auf dem Rotorkörper 4 mit den vorhandenen Permanentmagneten 3 ausgebildet werden können. Several Perma ¬ nentmagnete 3 can be arranged per axially extending pocket 8 behind the other and / or next to each other. This has in particular for the storage of the permanent magnets 3 advantages, since thus different pole widths can be formed on the rotor body 4 with the existing permanent magnet 3.
Bei einem Innenläufer nach FIG 1 ist dieser Rotorkörper 1 auf eine Welle 7 aufgeschrumpft oder auf andere Art und Weise drehfest verbunden. Da insbesondere bei Windkraftanlagen, die in der Gondel ange¬ ordneten elektrischen Betriebsmittel eine möglichst geringe Masse aufweisen sollen, ist vorteilhafterweise der Rotor 1, wie in FIG 1 schematisch dargestellt durch eine Speichenan- Ordnung 9 mit der Welle 7 verbunden. Der Rotorkörper 4 weist nur noch lediglich eine radial magnetisch erforderliche Dicke auf. Dieser derart ausgestaltete Rotorkörper 4 ist mit der Speichenanordnung 9 mechanisch verbunden. FIG 2 zeigt einen Rotor 1 eines Außenläufers einer permanent¬ erregten dynamoelektrischen Synchronmaschine, bei dem auf der Innenseite des Rotorkörpers 4 die Manschette 2 angeordnet ist, und dort ebenfalls axial verlaufende Taschen 8 ausbil¬ det, in denen Permanentmagnete 3 eingesetzt werden. In an internal rotor according to FIG. 1, this rotor body 1 is shrunk onto a shaft 7 or connected in a rotationally fixed manner in another way. Since, in particular in wind turbines that are to have the lowest possible mass in the nacelle is arranged ¬ electrical equipment, advantageously the rotor 1, as shown in FIG 1 schematically by a Speichenan- arrangement 9 with the shaft 7 is connected. The rotor body 4 only has only a radially magnetically required thickness. This rotor body 4 designed in this way is mechanically connected to the spoke arrangement 9. 2 shows a rotor 1 of an outer rotor of a permanent ¬ excited dynamoelectric synchronous machine, in which the sleeve 2 is arranged on the inside of the rotor body 4, and there is also axially extending pockets 8 ausbil ¬ det, in which permanent magnets 3 are used.
Bei einem Außenläufer sind die bisherig bekannten Fixierungen von Permanentmagneten durch Bandagen aufgrund der konstruktiven Eigenheiten eines Außenläufers nicht möglich. FIG 3 zeigt in perspektivischer Darstellung einen Teilausschnitt einer Manschette 2 mit den Abstufungen und den Mit¬ teln zur Befestigung der Manschette 2 am Rotorkörper 4. Dies ist beispielhaft in FIG 3 mittels vorgestanzten Löchern in den Pollücken der Manschette 2 realisiert, die über diese Lü- cken mit dem Rotorkörper 4 verschraubt oder vernietet werden können . In an external rotor, the previously known fixations of permanent magnets by means of bandages are not possible due to the design features of an external rotor. 3 shows in perspective view a partial section of a sleeve 2 with the gradations and with ¬ stuffs for fixing the cuff 2 on the rotor body 4. This is exemplified realized in FIG 3 by means of pre-punched holes in the pole gaps of the sleeve 2, this Lü- can be bolted or riveted to the rotor body 4.
Je nach den an der Manschette 2 angreifenden Kräften im Betreib der dynamoelektrischen Maschine sind pro Pollücke meh- rere axial verteilte Befestigungsmittel vorzusehen. Depending on the forces acting on the sleeve 2 in the operation of the dynamoelectric machine, a plurality of axially distributed fastening means are to be provided per pole gap.
FIG 4 zeigt in einer weiteren perspektivischen Darstellung die prinzipielle Anordnung der Manschette 2 an einem Rotorkörper 4 eines Außenläufermotors. Dort schließt beispielswei- se die Manschette 2 mit dem Rotorkörper 4 axial bündig ab. FIG. 4 shows, in a further perspective illustration, the basic arrangement of the sleeve 2 on a rotor body 4 of an external rotor motor. There, for example, closes the sleeve 2 with the rotor body 4 axially flush.
FIG 5 zeigt in einem Ausschnitt einen Teilquerschnitt eines Außenläufers, bei dem an dem Rotorkörper 4 durch Befesti- gungspunkte 5, die als Nieten oder Schrauben die Manschette 2 am Rotorkörper 4 halten, die Permanentmagnete 3 letztlich am Rotorkörper 4 positioniert sind. In die durch die Manschette 2 und dem Rotorkörper 4 gebildeten axial verlaufenden Taschen 8 sind die Permanentmagnete 3 eingesetzt, die prinzipiell dargestellt auch aus mehreren Einzelmagneten pro Tasche 8 be¬ stehen können, die nebeneinander und/oder axial hintereinander und/oder übereinander angeordnet sind. In einer bevorzugten Ausführungsform werden die Taschen 8 durch die zylindrisch ausgebildete Oberfläche des Rotorkör¬ pers 4 und die Stufigkeit der Manschette 2 gebildet. Dabei ist die Stufigkeit derart ausgebildet, dass die Taschen 8 Querschnitte aufweisen, die im Wesentlichen unter Berücksich- tigung der Krümmung der Oberfläche des Rotorkörpers 4 recht- eckförmig ausgebildet sind. FIG. 5 shows in a section a partial cross section of an external rotor, in which, on the rotor body 4, by fastening 5, which hold the cuff 2 on the rotor body 4 as rivets or screws, the permanent magnets 3 are finally positioned on the rotor body 4. In the axially extending through the sleeve 2 and formed the rotor body 4 pockets 8, the permanent magnets 3 are used, which can be stand ¬ shown in principle also consist of several individual magnets per bag 8, and / or axially behind one another and / or arranged side by side above the other. In a preferred embodiment, the pockets are formed 8 through the cylindrically shaped surface of the Rotorkör ¬ pers 4, and the steepness of the cuff. 2 In this case, the step is designed in such a way that the pockets 8 have cross-sections which are rectangular in shape, taking into account the curvature of the surface of the rotor body 4 substantially.
In einer in FIG 6 dargestellten Ausführungsform ist die Oberfläche des Rotorkörpers 4 bereits mit axialen Nuten versehen, die zusammen mit der Stufigkeit der Manschette 2 Taschen 8 bilden . In an embodiment shown in FIG 6, the surface of the rotor body 4 is already provided with axial grooves, which together with the stage of the cuff 2 pockets 8 form.
Vorteilhafterweise sind die Permanentmagnete 3 in ihren Ta¬ schen 8 zusätzlich durch einen Verguss 6 fixiert. Advantageously, the permanent magnets are fixed by a potting 3 additional 6 in their Ta ¬ rule. 8

Claims

Patentansprüche claims
1. Rotor (1) einer rotativen dynamoelektrischen Maschine mit Permanentmagneten (3), die am Umfang eines Rotorkörpers (4) angeordnet sind, wobei die Permanentmagnete (3) durch zumin¬ dest eine in Umfangsrichtung geschlossene Manschette (2) po¬ sitioniert und fixiert sind. 1. Rotor (1) of a rotary dynamo-electric machine with permanent magnets (3) which are arranged on the periphery of a rotor body (4), wherein the permanent magnets (3) least by at ¬ a circumferentially closed sleeve (2) po ¬ sitioned and fixed are.
2. Rotor (1) 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 der Rotorkörper (4) durch axial ge¬ schichtete Bleche oder massiv ausgebildet ist. 2. rotor (1) according to claim 1, dadurchgekenn - characterized in that the rotor body (4) is formed by axially ge ¬ coated sheets or solid.
3. Rotor (1) 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 zwischen den Permanentmagne- ten (3) in einer Pollücke zweier benachbarter Pole Befestigungsmittel wie Schweißpunkte, Schrauben oder Nieten in einer vorgebbaren Anzahl vorgesehen sind, um die Manschette (2) am Rotorkörper (4) zu befestigen. 3. rotor (1) according to claim 1 or 2, characterized in that between the permanent magnets (3) in a pole gap of two adjacent poles fastening means such as welds, screws or rivets are provided in a predetermined number to the cuff (2) on Rotor body (4) to attach.
4. Rotor (1) 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 Man¬ schette (2) aus Metall oder GFK ist. 4. Rotor (1) according to any one of the preceding claims, characterized in that the Man ¬ cuff (2) made of metal or GRP.
5. Verwendung eines Rotors (1) nach einem der vorhergehenden Ansprüche als Außen- oder Innenläufer permanenterregter Synchrongeneratoren bei Windkraftanlagen. 5. Use of a rotor (1) according to one of the preceding claims as external or internal rotor permanent-magnet synchronous generators in wind turbines.
6. Verfahren zur Herstellung eines Rotors (1) nach einem der Ansprüche 1 bis 4, g e k e n n z e i c h n e t durch folgende Schritte: 6. A method for producing a rotor (1) according to any one of claims 1 to 4, e e c e n e by the following steps:
- Bereitstellen eines Rotorkörpers (4),  Providing a rotor body (4),
- Anlegen einer Manschette (2) oder Manschettenteile am Um¬ fang des Rotorkörpers (4), so dass sich axial verlaufende Taschen (8) ausbilden, - applying a cuff (2), or sleeve parts on the order ¬ catch of the rotor body (4), so that axially extending pockets (8) form,
- axiales Einschieben von Permanentmagneten (3) in die axial verlaufenden Taschen (8), so dass sich magnetische Pole am Rotorkörper (4) ausbilden, Vergießen der Permanentmagnete (3) in den Taschen zusätzlichen Fixierung. - axial insertion of permanent magnets (3) in the axially extending pockets (8), so that magnetic poles on the rotor body (4) form, Potting the permanent magnets (3) in the pockets additional fixation.
EP10763170A 2009-09-29 2010-09-27 Rotor Withdrawn EP2483993A2 (en)

Applications Claiming Priority (2)

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DE102009043419 2009-09-29
PCT/EP2010/064270 WO2011039143A2 (en) 2009-09-29 2010-09-27 Rotor

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WO (1) WO2011039143A2 (en)

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CN102549885A (en) 2012-07-04
WO2011039143A3 (en) 2011-05-26

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