DE102013202033A1 - Electric machine i.e. generator, for wind power plant, has fan for supplying cooled air to junction box and component of machine, where part of air is sucked in by fan is conducted prior to cooling of component through connection box - Google Patents
Electric machine i.e. generator, for wind power plant, has fan for supplying cooled air to junction box and component of machine, where part of air is sucked in by fan is conducted prior to cooling of component through connection box Download PDFInfo
- Publication number
- DE102013202033A1 DE102013202033A1 DE201310202033 DE102013202033A DE102013202033A1 DE 102013202033 A1 DE102013202033 A1 DE 102013202033A1 DE 201310202033 DE201310202033 DE 201310202033 DE 102013202033 A DE102013202033 A DE 102013202033A DE 102013202033 A1 DE102013202033 A1 DE 102013202033A1
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- DE
- Germany
- Prior art keywords
- component
- fan
- electric machine
- air
- stator
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine elektrische Maschine,
- – wobei die elektrische Maschine einen Stator aufweist,
- – wobei der Stator in einem Statorgehäuse angeordnet ist,
- – wobei der Stator über Anschlussklemmen mit einem Energieversorgungssystem verbunden ist,
- – wobei die Anschlussklemmen in einem Anschlusskasten angeordnet sind,
- – wobei der Anschlusskasten unmittelbar am Statorgehäuse angeordnet ist,
- – wobei die elektrische Maschine einen Lüfter aufweist, mittels dessen eine vom Anschlusskasten verschiedene Komponente der elektrischen Maschine mit Luft gekühlt wird.
- Wherein the electric machine has a stator,
- Wherein the stator is arranged in a stator housing,
- - wherein the stator is connected via terminals with a power supply system,
- - wherein the terminals are arranged in a terminal box,
- - wherein the terminal box is arranged directly on the stator housing,
- - Wherein the electric machine has a fan, by means of which a different from the terminal box component of the electric machine is cooled with air.
Eine derartige elektrische Maschine ist bekannt. Such an electric machine is known.
Aufgrund von Kosten- und Bauraumoptimierungen werden elektrische Maschinen – beispielsweise Generatoren – immer kompakter. Dies hat unter anderem zur Folge, dass der Anschlusskasten ohne Zwischenraum direkt an das Statorgehäuse montiert wird. Die direkte Anbindung hat einen stärkeren Durchgang von im Stator entstehender Wärme zum Anschlusskasten zur Folge. Weiterhin wird der Anschlusskasten in der Regel relativ kompakt gebaut und weist daher zum einen ein geringes inneres Luftvolumen und zum anderen eine relativ geringe Oberfläche auf. Dies führt im Ergebnis dazu, dass die Temperatur der im Anschlusskasten befindlichen Luft ansteigt. Due to cost and space optimization, electrical machines - such as generators - are becoming increasingly compact. This has, among other things, the consequence that the connection box is mounted directly on the stator housing without a gap. The direct connection results in a stronger passage of heat generated in the stator to the terminal box. Furthermore, the junction box is usually built relatively compact and therefore has on the one hand a low internal air volume and on the other hand, a relatively small surface area. As a result, the temperature of the air in the connection box increases.
Im Stand der Technik wird dem Temperaturanstieg üblicherweise dadurch Rechnung getragen, dass Kabel und Anschlusslitzen verwendet werden, welche die entsprechend höheren Temperaturen verkraften. Weiterhin werden Schrumpfschläuche als Kabelschutz eingesetzt. Die Verwendung derartiger Materialien hat jedoch erhöhte Kosten zur Folge. In the prior art, the increase in temperature is usually taken into account by using cables and connecting leads which cope with the correspondingly higher temperatures. Furthermore shrink sleeves are used as cable protection. However, the use of such materials results in increased costs.
Im Stand der Technik ist weiterhin bekannt, einen eigenen Lüfter zum Zwangsbelüften des Anschlusskastens einzusetzen. Auch dies führt zu erhöhten Materialkosten. Weiterhin wird für den Antrieb des eigenen Lüfters elektrische Energie benötigt, so dass der Wirkungsgrad der elektrischen Maschine sinkt. In the prior art is also known to use a dedicated fan for forced ventilation of the junction box. This also leads to increased material costs. Furthermore, electrical energy is required for the drive of the own fan, so that the efficiency of the electric machine decreases.
Die Aufgabe der vorliegenden Erfindung besteht darin, eine elektrische Maschine der eingangs genannten Art derart weiterzuentwickeln, dass auf einfache, energieeffiziente und kostengünstige Weise eine zuverlässige Kühlung des Anschlusskastens gewährleistet ist. The object of the present invention is to develop an electric machine of the type mentioned in such a way that in a simple, energy-efficient and cost-effective manner reliable cooling of the junction box is ensured.
Die Aufgabe wird durch eine elektrische Maschine mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der erfindungsgemäßen elektrischen Maschine sind Gegenstand der abhängigen Ansprüche 2 und 3. Anspruch 4 nennt eine bevorzugte Anwendung der erfindungsgemäßen elektrischen Maschine. The object is achieved by an electric machine with the features of claim 1. Advantageous embodiments of the electric machine according to the invention are the subject of the
Erfindungsgemäß wird eine elektrische Maschine der eingangs genannten Art derart ausgebildet, dass zumindest ein Teil der vom Lüfter angesaugten Luft vor dem Kühlen der Komponente durch den Anschlusskasten geleitet wird. According to the invention, an electrical machine of the aforementioned type is designed such that at least part of the air sucked in by the fan is passed through the connection box before the component is cooled.
Beispielsweise ist es möglich, dass die elektrische Maschine einen Rotor aufweist, der über ein Schleifringsystem mit dem Energieversorgungssystem verbunden ist. In diesem Fall kann die Komponente der elektrischen Maschine das Schleifringsystem sein. Eine Verbindung des Rotors mit dem Energieversorgungssystem über ein Schleifringsystem ist beispielsweise sinnvoll, wenn die elektrische Maschine als doppelt gespeiste Asynchronmaschine oder als elektrisch erregte Synchronmaschine ausgebildet ist. For example, it is possible that the electric machine has a rotor which is connected via a slip ring system to the power supply system. In this case, the component of the electric machine may be the slip ring system. A connection of the rotor to the power supply system via a slip ring system is useful, for example, if the electrical machine is designed as a double-fed asynchronous machine or as an electrically excited synchronous machine.
Vorzugsweise wird vom Lüfter zum Kühlen der Komponente zusätzlich zu der durch den Anschlusskasten geleiteten Luft weitere Luft aus der Umgebung der elektrischen Maschine angesaugt. Dadurch wird erreicht, dass sowohl für den Anschlusskasten als auch für die Komponente eine hinreichende Kühlleistung zur Verfügung stehen. Preferably, in addition to the air conducted through the connection box, further air from the surroundings of the electric machine is sucked in by the fan for cooling the component. This ensures that a sufficient cooling capacity is available both for the connection box and for the component.
Prinzipiell ist die erfindungsgemäße elektrische Maschine universell einsetzbar. Vorzugsweise wird sie als Generator einer Windkraftanlage verwendet. In principle, the electric machine according to the invention is universally applicable. Preferably, it is used as a generator of a wind turbine.
Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung der Ausführungsbeispiele, die in Verbindung mit den Zeichnungen näher erläutert werden. Hierbei zeigen in schematischer Darstellung: The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in more detail in conjunction with the drawings. Here are shown in a schematic representation:
Die FIG werden nachstehend gemeinsam erläutert, wobei
Die elektrische Maschine weist einen Stator
Die Verbindungsleitungen
Die elektrische Maschine weist weiterhin einen Rotor
Die elektrische Maschine weist weiterhin einen Lüfter
Gemäß den
Entsprechend der Darstellung in den
Die elektrische Maschine der
Die vorliegende Erfindung weist viele Vorteile auf. Insbesondere können innerhalb des Anschlusskastens
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen. Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102013202033.3A DE102013202033B4 (en) | 2013-02-07 | 2013-02-07 | Electrical machine with active cooling of the connection box |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102013202033.3A DE102013202033B4 (en) | 2013-02-07 | 2013-02-07 | Electrical machine with active cooling of the connection box |
Publications (2)
Publication Number | Publication Date |
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DE102013202033A1 true DE102013202033A1 (en) | 2014-08-07 |
DE102013202033B4 DE102013202033B4 (en) | 2022-05-25 |
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DE102013202033.3A Active DE102013202033B4 (en) | 2013-02-07 | 2013-02-07 | Electrical machine with active cooling of the connection box |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3061964A1 (en) * | 2015-02-24 | 2016-08-31 | General Electric Company | System and method for cooling or cleaning a slip ring assembly of a generator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1151595B (en) * | 1960-05-13 | 1963-07-18 | Grunhain Elektromotorenwerk | External fan arrangement for the purpose of speed-independent ventilation in electrical machines with slip rings |
US4119873A (en) * | 1974-04-10 | 1978-10-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Dynamoelectric machines |
JP2010239744A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Industrial Equipment Systems Co Ltd | Motor |
WO2013007225A1 (en) * | 2011-07-08 | 2013-01-17 | Hanning Elekro-Werke Gmbh & Co.Kg | Electric motor |
-
2013
- 2013-02-07 DE DE102013202033.3A patent/DE102013202033B4/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1151595B (en) * | 1960-05-13 | 1963-07-18 | Grunhain Elektromotorenwerk | External fan arrangement for the purpose of speed-independent ventilation in electrical machines with slip rings |
US4119873A (en) * | 1974-04-10 | 1978-10-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Dynamoelectric machines |
JP2010239744A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Industrial Equipment Systems Co Ltd | Motor |
WO2013007225A1 (en) * | 2011-07-08 | 2013-01-17 | Hanning Elekro-Werke Gmbh & Co.Kg | Electric motor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3061964A1 (en) * | 2015-02-24 | 2016-08-31 | General Electric Company | System and method for cooling or cleaning a slip ring assembly of a generator |
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Publication number | Publication date |
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DE102013202033B4 (en) | 2022-05-25 |
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Owner name: FLENDER GMBH, DE Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE |
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R082 | Change of representative |
Representative=s name: MICHALSKI HUETTERMANN & PARTNER PATENTANWAELTE, DE |
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R082 | Change of representative |
Representative=s name: MICHALSKI HUETTERMANN & PARTNER PATENTANWAELTE, DE |
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R020 | Patent grant now final |