WO2010121983A1 - Electric machine comprising a rotor winding which is supplied with current via sliprings - Google Patents
Electric machine comprising a rotor winding which is supplied with current via sliprings Download PDFInfo
- Publication number
- WO2010121983A1 WO2010121983A1 PCT/EP2010/055094 EP2010055094W WO2010121983A1 WO 2010121983 A1 WO2010121983 A1 WO 2010121983A1 EP 2010055094 W EP2010055094 W EP 2010055094W WO 2010121983 A1 WO2010121983 A1 WO 2010121983A1
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- WO
- WIPO (PCT)
- Prior art keywords
- brush holder
- carbon brush
- carbon
- carbon brushes
- ring
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/22—Asynchronous induction motors having rotors with windings connected to slip-rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
Definitions
- the present invention relates to the field of high power electrical machines. It relates to an electrical machine according to the preamble of claim 1.
- Double-fed asynchronous machines especially in the power range from 20 MVA to 500 MVA or above, can be used for speed variable
- the rotor winding consists of individual rods, which are embedded in grooves in the rotor core. In the winding head, the individual rods are connected to form a winding.
- the infeed of the streams takes place via at least three slip rings, which are fastened to the shaft at the end of the machine.
- Such a machine is 1, wherein the axis of the machine can be aligned vertically or horizontally.
- the electric machine 10 of FIG. 1 comprises a rotatably mounted about an axis 17 rotor 25 with a central body 1 1 and a concentric surrounding the central body 11 rotor plate body 12 with the rotor winding 13.
- the rotor winding 13 has at both ends outside of the rotor body 12 a rotor winding head 13 'up. Separated by an air gap, the rotor 25 is concentrically enclosed by a stator lamination body 15, in which a stator winding with corresponding Statorwickelköpfen 16 is housed.
- At one end of the central body 1 1 of the rotor 25 is in a shaft 1 1 ', which in the axial direction one behind the other several slip rings 14 carries.
- the transmission of the currents to the slip rings 14 is done according to FIG. 2 by carbon brushes 24, which are mounted in carbon brush holders 23.
- carbon brushes 24 are uniformly distributed over the circumference.
- Each of a slip ring 24 associated carbon brush holder 23 are in turn mounted on a carbon brush holder ring 22 which directs the currents to the carbon brushes 24.
- the carbon brushes are each mounted in a carbon brush holder and the carbon brush holder attached to the carbon brushes on the inside of a common, concentric with the axis arranged carbon brush holder ring.
- the carbon brush holder ring acts as a power distribution ring and connects the carbon brushes with even distribution of the currents to the main terminal.
- the geometry of the carbon brush holder ring changes over the circumference so that the current distribution for all carbon brushes is the same.
- the cross section of the carbon brush holder ring increases with increasing distance from the main connection.
- FIG. 1 in a highly simplified representation of a section of an electric machine with power supply of the rotor winding via slip rings, as is suitable for the application of the invention
- Fig. 2 shows an exemplary configuration of carbon brushes, on the on
- Circumference distributed power is transmitted to the slip rings
- FIG. 3 shows a carbon brush holder ring with a special geometry for uniforming the currents transmitted via the different carbon brushes according to an exemplary embodiment of the invention.
- Fig. 4 shows an arrangement as in Figure 3, but with two main terminals.
- the basic idea of the invention is to achieve a uniform current distribution with a specially defined geometry of the power distribution arrangement and in particular of the ring on which the carbon brush holder are mounted.
- the current distribution may be controlled directly via the geometry of the carbon brush holder ring, as with the carbon brush holder ring 22 'of the power distribution assemblies 18' according to the embodiments of FIGS. 3 and 4 is the case.
- the thickness or the cross-sectional area F1, F2, as well as the diameter of the ring can be adjusted so that the same voltage drop occurs from the connection point at the main terminal 19 to all carbon brush holders 23. It is important to ensure that this uniform current distribution remains constant even when the frequency changes.
- the thickness and thus the cross-sectional area F1 in the vicinity of the main terminal 19 is significantly smaller than the thickness or cross-sectional area F2 in the part of the carbon brush holder ring 22 'farthest from the main terminal 19.
- the thickness or the cross-sectional area increases steadily with increasing distance from the main terminal 19.
- two main ports 19 are provided on the carbon brush holder ring 22 '.
- the cross-sectional area F1, F2 of the carbon brush holder ring 22 ' is lowest in the vicinity of the main terminals 19, 19' (F1) and steadily increases with increasing distance from the respective main terminal 19 or 19 'until they are in a range of the greatest distance between the main terminals 19 and 19 'reaches a maximum value (F2).
Abstract
The invention relates to an electric machine in the performance range of several MVA, in particular an asynchronous machine, comprising a rotor rotating about an axis with a central body, a shaft and a rotor winding, wherein said rotor winding is supplied with current from a main connection (19) via sliprings arranged on the shaft. According to the invention, each slipring is contacted via several carbon brushes (24) which are concentrically arranged around the axis. A uniformly applied load of the carbon brushes is achieved in a simple manner in that the current originating from the main connection (19) via a current distribution arrangement (18'), which has an adapted geometry, is evenly distributed to the individual carbon brushes (24) of each slipring (14).
Description
BESCHREIBUNG DESCRIPTION
ELEKTRISCHE MASCHINE MIT EINER ROTORWICKLUNG, DIE ÜBER SCHLEIFRINGE MIT STROM VERSORGT WIRDELECTRICAL MACHINE WITH A ROTOR DEVELOPMENT SUPPLIED WITH ELECTRICITY OVER SHOOTING RINGS
TECHNISCHES GEBIETTECHNICAL AREA
Die vorliegende Erfindung bezieht sich auf das Gebiet der elektrischen Maschinen hoher Leistung. Sie betrifft eine elektrische Maschine gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to the field of high power electrical machines. It relates to an electrical machine according to the preamble of claim 1.
STAND DER TECHNIKSTATE OF THE ART
Doppelt gespeiste Asynchronmaschinen, insbesondere im Leistungsbereich von 20 MVA bis 500 MVA oder darüber, können zur drehzahlvariablenDouble-fed asynchronous machines, especially in the power range from 20 MVA to 500 MVA or above, can be used for speed variable
Energieproduktion eingesetzt werden. Diese Maschinen zeichnen sich durch eine verteilte Dreiphasenwicklung auf dem Rotor aus. Die Rotorwicklung besteht aus einzelnen Stäben, welche im Rotorblechpaket in Nuten eingebettet sind. Im Wickelkopf werden die einzelnen Stäbe zu einer Wicklung verschaltet. Die Einspeisung der Ströme erfolgt über mindestens drei Schleifringe, welche am Ende der Maschine an der Welle befestigt sind. Eine solche Maschine ist
ausschnittsweise in Fig. 1 dargestellt, wobei die Achse der Maschine vertikal oder horizontal ausgerichtet sein kann.Energy production are used. These machines are characterized by a distributed three-phase winding on the rotor. The rotor winding consists of individual rods, which are embedded in grooves in the rotor core. In the winding head, the individual rods are connected to form a winding. The infeed of the streams takes place via at least three slip rings, which are fastened to the shaft at the end of the machine. Such a machine is 1, wherein the axis of the machine can be aligned vertically or horizontally.
Die elektrische Maschine 10 der Fig. 1 umfasst einen um eine Achse 17 drehbar gelagerten Rotor 25 mit einem Zentralkörper 1 1 und einem den Zentralkörper 11 konzentrisch umgebenden Rotorblechkörper 12 mit der Rotorwicklung 13. Die Rotorwicklung 13 weist an beiden Enden ausserhalb des Rotorblechkörpers 12 einen Rotorwickelkopf 13' auf. Getrennt durch einen Luftspalt ist der Rotor 25 von einem Statorblechkörper 15 konzentrisch umschlossen, in dem eine Statorwicklung mit entsprechenden Statorwickelköpfen 16 untergebracht ist. An einem Ende geht der Zentralkörper 1 1 des Rotors 25 in eine Welle 1 1 ' über, die in axialer Richtung hintereinander angeordnet mehrere Schleifringe 14 trägt.The electric machine 10 of FIG. 1 comprises a rotatably mounted about an axis 17 rotor 25 with a central body 1 1 and a concentric surrounding the central body 11 rotor plate body 12 with the rotor winding 13. The rotor winding 13 has at both ends outside of the rotor body 12 a rotor winding head 13 'up. Separated by an air gap, the rotor 25 is concentrically enclosed by a stator lamination body 15, in which a stator winding with corresponding Statorwickelköpfen 16 is housed. At one end of the central body 1 1 of the rotor 25 is in a shaft 1 1 ', which in the axial direction one behind the other several slip rings 14 carries.
Die Übertragung der Ströme auf die Schleifringe 14 geschieht gemäss Fig. 2 durch Kohlebürsten 24, welche in Kohlebürstenhaltern 23 montiert sind. Im Beispiel der Fig. 2 sind vier Kohlebürsten 24 gleichmässig über den Umfang verteilt. Die jeweils einem Schleifring 24 zugeordneten Kohlebürstenhalter 23 sind ihrerseits an einem Kohlebürstenhalterring 22 montiert, welcher die Ströme auf die Kohlebürsten 24 leitet.The transmission of the currents to the slip rings 14 is done according to FIG. 2 by carbon brushes 24, which are mounted in carbon brush holders 23. In the example of FIG. 2, four carbon brushes 24 are uniformly distributed over the circumference. Each of a slip ring 24 associated carbon brush holder 23 are in turn mounted on a carbon brush holder ring 22 which directs the currents to the carbon brushes 24.
Um eine gleichmässige Abnutzung und Erwärmung der Kohlebürsten sicherzustellen, muss bei dieser Konfiguration darauf geachtet werden, dass der Gesamtstrom gleichmässig auf die Kohlebürstenhalter 23 und damit auch auf die Kohlebürsten 24 verteilt wird.In order to ensure uniform wear and heating of the carbon brushes, care must be taken in this configuration that the total flow is uniformly distributed to the carbon brush holder 23 and thus also to the carbon brushes 24.
DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION
Es ist daher Aufgabe der Erfindung, eine elektrische Maschine der eingangs genannten Art auf besonders einfache Weise so auszugestalten, dass der Gesamtstrom gleichmässig auf die Kohlebürsten verteilt wird.
Die Aufgabe wird durch die Gesamtheit der Merkmale des Anspruchs 1 gelöst. Wesentlich für die erfindungsgemässe Lösung ist, dass der aus wenigstens einem Hauptanschluss stammende Strom über eine Stromverteilungsanordnung mit angepasster Geometrie gleichmässig auf die einzelnen Kohlebürsten jedes Schleifrings verteilt wird. Die gleichmässige Stromverteilung durch Anpassung der Geometrie der Stromverteilungsanordnung ist besonders einfach und wirkungsvoll und zeichnet sich durch eine hohe Belastbarkeit und lange Lebensdauer aus.It is therefore an object of the invention to design an electric machine of the type mentioned in a particularly simple manner so that the total current is evenly distributed to the carbon brushes. The object is solved by the entirety of the features of claim 1. Essential for the solution according to the invention is that the current originating from at least one main connection is uniformly distributed over a current distribution arrangement with adapted geometry to the individual carbon brushes of each slip ring. The even current distribution by adjusting the geometry of the power distribution arrangement is particularly simple and effective and is characterized by a high load capacity and long life.
Gemäss einer Ausgestaltung der Erfindung sind die Kohlebürsten jeweils in einem Kohlebürstenhalter gelagert und die Kohlebürstenhalter mit den Kohlebürsten auf der Innenseite eines gemeinsamen, konzentrisch zur Achse angeordneten Kohlebürstenhalterrings befestigt.According to one embodiment of the invention, the carbon brushes are each mounted in a carbon brush holder and the carbon brush holder attached to the carbon brushes on the inside of a common, concentric with the axis arranged carbon brush holder ring.
Vorzugsweise wirkt der Kohlebürstenhalterring selbst als Stromverteilungsring und verbindet die Kohlebürsten bei gleichmässiger Verteilung der Ströme mit dem Hauptanschluss.Preferably, the carbon brush holder ring acts as a power distribution ring and connects the carbon brushes with even distribution of the currents to the main terminal.
Insbesondere verändert sich die Geometrie des Kohlebürstenhalterrings über den Umfang so, dass die Stromverteilung für alle Kohlebürsten gleich ist.In particular, the geometry of the carbon brush holder ring changes over the circumference so that the current distribution for all carbon brushes is the same.
Dies wird vorzugsweise dadurch erreicht, dass sich der Querschnitt des Kohlebürstenhalterrings über den Umfang ändert.This is preferably achieved in that the cross section of the carbon brush holder ring changes over the circumference.
Insbesondere vergrössert sich der Querschnitt des Kohlebürstenhalterrings mit zunehmendem Abstand vom Hauptanschluss.In particular, the cross section of the carbon brush holder ring increases with increasing distance from the main connection.
KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert werden. Es zeigen
Fig. 1 in einer stark vereinfachten Darstellung einen Ausschnitt aus einer elektrischen Maschine mit Stromversorgung der Rotorwicklung über Schleifringe, wie sie zur Anwendung der Erfindung geeignet ist;The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it Fig. 1 in a highly simplified representation of a section of an electric machine with power supply of the rotor winding via slip rings, as is suitable for the application of the invention;
Fig. 2 eine beispielhafte Konfiguration von Kohlebürsten, über die amFig. 2 shows an exemplary configuration of carbon brushes, on the on
Umfang verteilt Strom auf die Schleifringe übertragen wird;Circumference distributed power is transmitted to the slip rings;
Fig. 3 ein Kohlebürstenhalterring mit spezieller Geometrie zur Vergleichmässigung der über die verschiedenen Kohlebürsten übertragenen Ströme gemäss einem Ausführungsbeispiel der Erfindung; und3 shows a carbon brush holder ring with a special geometry for uniforming the currents transmitted via the different carbon brushes according to an exemplary embodiment of the invention; and
Fig. 4 eine Anordnung wie in Fig.3, aber mit zwei Hauptanschlüssen.Fig. 4 shows an arrangement as in Figure 3, but with two main terminals.
WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION
Die grundlegende Idee der Erfindung liegt darin, mit einer speziell definierten Geometrie der Stromverteilungsanordnung und insbesondere des Ringes, an welchem die Kohlebürstenhalter montiert sind, eine gleichmässige Stromverteilung zu erreichen.The basic idea of the invention is to achieve a uniform current distribution with a specially defined geometry of the power distribution arrangement and in particular of the ring on which the carbon brush holder are mounted.
Sollen grosse Strome auf den Rotor einer Synchron- oder Asynchronmaschine geleitet werden, müssen diese auf mehrere Kohlebürsten gleichmässig aufgeteilt werden. Dies kann gemäss Fig. 2 prinzipiell durch viele Anschlüsse 21 am Kohlebürstenhalterring 22 erreicht werden, wobei darauf geachtet werden muss, dass alle Anschlüsse denselben Widerstand, also zum Beispiel bei gleichem Durchmesser dieselbe Länge haben.If large currents are to be routed to the rotor of a synchronous or asynchronous machine, they must be divided evenly over several carbon brushes. This can be achieved according to FIG. 2 in principle by many connections 21 on the carbon brush holder ring 22, whereby care must be taken that all connections have the same resistance, ie, for example, the same length for the same diameter.
Alternativ dazu kann die Stromverteilung direkt über die Geometrie des Kohlebürstenhalterrings gesteuert werden, wie dies beim Kohlebürstenhalterring
22' der Stromverteilungsanordnungen 18' gemäss den Ausführungsbeispielen der Fig. 3 und 4 der Fall ist. Dabei können die Dicke bzw. die Querschnittsfläche F1 , F2, wie auch der Durchmesser des Rings, angepasst werden, so dass von der Anschlussstelle am Hauptanschluss 19 bis zu allen Kohlebürstenhaltern 23 derselbe Spannungsabfall auftritt. Dabei gilt es, darauf zu achten, dass diese vergleichmässigte Stromverteilung auch bei sich ändernder Frequenz konstant bleibt.Alternatively, the current distribution may be controlled directly via the geometry of the carbon brush holder ring, as with the carbon brush holder ring 22 'of the power distribution assemblies 18' according to the embodiments of FIGS. 3 and 4 is the case. In this case, the thickness or the cross-sectional area F1, F2, as well as the diameter of the ring, can be adjusted so that the same voltage drop occurs from the connection point at the main terminal 19 to all carbon brush holders 23. It is important to ensure that this uniform current distribution remains constant even when the frequency changes.
Im Ausführungsbeispiel der Fig. 3 ist die Dicke und damit die Querschnittsfläche F1 in der Nähe des Hauptanschlusses 19 deutlich kleiner als die Dicke bzw. Querschnittsfläche F2 in dem vom Hauptanschluss 19 am weitesten entfernten Teil des Kohlebürstenhalterring 22'. Die Dicke bzw. die Querschnittsfläche nimmt dabei mit zunehmender Entfernung vom Hauptanschluss 19 stetig zu.In the embodiment of FIG. 3, the thickness and thus the cross-sectional area F1 in the vicinity of the main terminal 19 is significantly smaller than the thickness or cross-sectional area F2 in the part of the carbon brush holder ring 22 'farthest from the main terminal 19. The thickness or the cross-sectional area increases steadily with increasing distance from the main terminal 19.
In dem Ausführungsbeispiel der Fig. 4 sind zwei Hauptanschlüsse 19 an dem Kohlebürstenhalterring 22' vorgesehen. Die Querschnittsfläche F1 , F2 des Kohlebürstenhalterrings 22' ist in der Nähe der Hauptanschlüsse 19, 19' jeweils am geringsten (F1 ) und nimmt mit zunehmender Entfernung von dem jeweiligen Hauptanschluss 19 oder 19' stetig zu, bis sie in einem Bereich der grössten Entfernung zwischen den Hauptanschlüssen 19 und 19' einen maximalen Wert (F2) erreicht.
In the embodiment of FIG. 4, two main ports 19 are provided on the carbon brush holder ring 22 '. The cross-sectional area F1, F2 of the carbon brush holder ring 22 'is lowest in the vicinity of the main terminals 19, 19' (F1) and steadily increases with increasing distance from the respective main terminal 19 or 19 'until they are in a range of the greatest distance between the main terminals 19 and 19 'reaches a maximum value (F2).
BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS
10 elektrische Maschine (Asynchronmaschine)10 electric machine (asynchronous machine)
1 1 Zentralkörper1 1 central body
1 1 ' Welle1 1 'shaft
12 Rotorblechkörper12 rotor body
13 Rotorwicklung13 rotor winding
13' Rotorwickelkopf13 'rotor winding head
14 Schleifring14 slip ring
15 Statorblechkörper15 stator lamination body
16 Statorwickelkopf16 stator winding head
17 Achse17 axis
18,18' Stromverteilungsanordnung18,18 'power distribution arrangement
19,19' Hauptanschluss19.19 'main line
20 Stromverteilungsring20 power distribution ring
21 verteilter Anschluss21 distributed connection
22,22' Kohlebürstenhalterring22,22 'carbon brush holder ring
23 Kohlebürstenhalter23 carbon brush holder
24 Kohlebürste24 carbon brush
25 Rotor25 rotor
F1.F2 Querschnittsfläche
F1.F2 cross-sectional area
Claims
1. Elektrische Maschine (10) im Leistungsbereich von mehreren MVA, insbesondere Asynchronmaschine, welche elektrische Maschine (10) einen um eine Achse (17) drehenden Rotor (25) mit einem Zentralkörper (1 1 ), einer Welle (1 1 ') und einer Rotorwicklung (13) umfasst, wobei die Rotorwicklung (13) über an der Welle (1 1 ') angeordnete Schleifringe (14) aus wenigstens einem Hauptanschluss (19, 19') mit Strom versorgt wird, und jeder der Schleifringe (14) über mehrere konzentrisch um die Achse (17) herum angeordnete Kohlebürsten (24) kontaktiert wird, dadurch gekennzeichnet, dass der aus dem wenigstens einen Hauptanschluss (19, 19') stammende Strom über eine Stromverteilungsanordnung (18') mit angepasster Geometrie gleichmässig auf die einzelnen Kohlebürsten (24) jedes Schleifrings (14) verteilt wird.1. Electric machine (10) in the power range of several MVA, in particular asynchronous machine, which electrical machine (10) about an axis (17) rotating rotor (25) having a central body (1 1), a shaft (1 1 ') and a rotor winding (13), wherein the rotor winding (13) on at the shaft (1 1 ') arranged slip rings (14) from at least one main terminal (19, 19') is supplied with electricity, and each of the slip rings (14) via a plurality of carbon brushes (24) arranged concentrically around the axis (17) is contacted, characterized in that the current originating from the at least one main connection (19, 19 ') is uniformly applied to the individual carbon brushes via a current distribution arrangement (18') with adapted geometry (24) of each slip ring (14) is distributed.
2. Elektrische Maschine nach Anspruch 1 , dadurch gekennzeichnet, dass die Kohlebürsten (24) jeweils in einem Kohlebürstenhalter (23) gelagert sind, und dass die Kohlebürstenhalter (23) mit den Kohlebürsten (24) auf der Innenseite eines gemeinsamen, konzentrisch zur Achse (17) angeordneten Kohlebürstenhalterrings (22') befestigt sind.2. Electrical machine according to claim 1, characterized in that the carbon brushes (24) are each mounted in a carbon brush holder (23), and that the carbon brush holder (23) with the carbon brushes (24) on the inside of a common, concentric to the axis ( 17) arranged carbon brush holder ring (22 ') are attached.
3. Elektrische Maschine nach Anspruch 2, dadurch gekennzeichnet, dass der Kohlebürstenhalterring (22') selbst als Stromverteilungsring wirkt und die Kohlebürsten (24) bei gleichmässiger Verteilung der Ströme mit dem Hauptanschluss (19, 19') verbindet.3. Electrical machine according to claim 2, characterized in that the carbon brush holder ring (22 ') itself acts as a power distribution ring and the carbon brushes (24) with a uniform distribution of the currents to the main terminal (19, 19') connects.
4. Elektrische Maschine nach Anspruch 3, dadurch gekennzeichnet, dass die Geometrie (F1 , F2) des Kohlebürstenhalterrings (22') sich über den Umfang so verändert, dass die Stromverteilung für alle Kohlebürsten (24) gleich ist. 4. Electrical machine according to claim 3, characterized in that the geometry (F1, F2) of the carbon brush holder ring (22 ') changes over the circumference so that the current distribution for all carbon brushes (24) is the same.
5. Elektrische Maschine nach Anspruch 4, dadurch gekennzeichnet, dass sich der Querschnitt (F1 , F2) des Kohlebürstenhalterrings (22') über den Umfang ändert.5. Electrical machine according to claim 4, characterized in that the cross section (F1, F2) of the carbon brush holder ring (22 ') changes over the circumference.
6. Elektrische Maschine nach Anspruch 5, dadurch gekennzeichnet, dass sich der Querschnitt (F1 , F2) des Kohlebürstenhalterrings (22') mit zunehmendem Abstand vom Hauptanschluss (19, 19') vergrössert. 6. Electrical machine according to claim 5, characterized in that the cross section (F1, F2) of the carbon brush holder ring (22 ') increases with increasing distance from the main terminal (19, 19').
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009018551.8 | 2009-04-24 | ||
| DE102009018551 | 2009-04-24 | ||
| DE102009037988.6 | 2009-08-20 | ||
| DE200910037988 DE102009037988A1 (en) | 2009-08-20 | 2009-08-20 | Electric machine i.e. asynchronous machine, has main connection from which current flowing via current distribution arrangement is evenly distributed to carbon brushes of slip rings, where arrangement comprises adapted geometry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010121983A1 true WO2010121983A1 (en) | 2010-10-28 |
Family
ID=42309946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/055094 WO2010121983A1 (en) | 2009-04-24 | 2010-04-19 | Electric machine comprising a rotor winding which is supplied with current via sliprings |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2010121983A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013034237A3 (en) * | 2011-09-08 | 2013-12-19 | Voith Patent Gmbh | Double-fed asynchronous machine |
| EP2800268A3 (en) * | 2013-05-02 | 2016-05-25 | GE Energy Power Conversion Technology Limited | Multi-phase Electric Circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191128682A (en) * | 1911-12-20 | 1912-03-21 | Bruce Peebles & Co Ltd | Improvements in Apparatus for Lifting the Brushes and Short-circuiting the Rotor Windings of Alternating Current Dynamo Electric Machines. |
| DE2124196A1 (en) * | 1971-05-13 | 1972-11-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Slip ring for high power electrical machines |
| EP0858148A1 (en) * | 1997-02-06 | 1998-08-12 | Gec Alsthom Moteurs Sa | Arrangement for disconnection of the rheostat starting means of a slip-ring asynchronous motor, and motor provided with such an arrangement |
-
2010
- 2010-04-19 WO PCT/EP2010/055094 patent/WO2010121983A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191128682A (en) * | 1911-12-20 | 1912-03-21 | Bruce Peebles & Co Ltd | Improvements in Apparatus for Lifting the Brushes and Short-circuiting the Rotor Windings of Alternating Current Dynamo Electric Machines. |
| DE2124196A1 (en) * | 1971-05-13 | 1972-11-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Slip ring for high power electrical machines |
| EP0858148A1 (en) * | 1997-02-06 | 1998-08-12 | Gec Alsthom Moteurs Sa | Arrangement for disconnection of the rheostat starting means of a slip-ring asynchronous motor, and motor provided with such an arrangement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013034237A3 (en) * | 2011-09-08 | 2013-12-19 | Voith Patent Gmbh | Double-fed asynchronous machine |
| EP2800268A3 (en) * | 2013-05-02 | 2016-05-25 | GE Energy Power Conversion Technology Limited | Multi-phase Electric Circuit |
| US9543812B2 (en) | 2013-05-02 | 2017-01-10 | Ge Energy Power Conversion Technology Limited | Multi-phase electric circuit |
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