DE969274C - For electrical machines, especially turbo generators, used slot conductor - Google Patents

For electrical machines, especially turbo generators, used slot conductor

Info

Publication number
DE969274C
DE969274C DEL11686A DEL0011686A DE969274C DE 969274 C DE969274 C DE 969274C DE L11686 A DEL11686 A DE L11686A DE L0011686 A DEL0011686 A DE L0011686A DE 969274 C DE969274 C DE 969274C
Authority
DE
Germany
Prior art keywords
conductor
electrical machines
slot conductor
recesses
used slot
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.)
Expired
Application number
DEL11686A
Other languages
German (de)
Inventor
Dr-Ing Bernhard Kalkner
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL11686A priority Critical patent/DE969274C/en
Application granted granted Critical
Publication of DE969274C publication Critical patent/DE969274C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Landscapes

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

Description

Von der thermischen Beanspruchung und der dadurch erforderlichen Kühlung hängt die Ausnutzbarkeit des aktiven Materials bei elektrischen Maschinen, insbesondere bei Turbo-Generatoren, weitestgehend ab. Zur Verminderung der bei der Kühlung auftretenden Schwierigkeiten ist eine große Anzähl von Vorschlägen unterbreitet worden, die zum Ziele haben, die in der Wicklung entstehende Verlustwärme möglichst unmittelbar abzuführen.The thermal stress and the cooling required as a result depends on the exploitability of the active material in electrical machines, in particular in the case of turbo generators, as far as possible. To reduce that which occurs during cooling Difficulties, a large number of proposals have been made leading to the The aim is to reduce the heat loss occurring in the winding as directly as possible to dissipate.

Es ist bekannt, die Leiteranordnung so zu treffen, daß die Kühlluft auf beiden Seiten in der Nut die Wärme von der stromdurchflossenen Wicklung abführen kann oder in der Nut zwei Leitergruppen anzuordnen, zwischen denen ein Luft- oder Gasstrom entsteht, der die Wärme abführt. Diesen Anordnungen haftet im Prinzip derselbe Mangel an, der insbesondere bei Maschinen hoher Leistung störend in Erscheinung tritt. Die Leiter werden im Betrieb mit so hoher Zentrifugalkraft an den Nutenverschluß gepreßt, daß Wärmeausdehnungen zu unregelmäßigen Verformungen, besonders zu seitlichen Ausbiegungen, der Leiter führen. Diese mechanische Verformung kann insbesondere dann zu Schwierigkeiten und Störungen Anlaß geben, wenn die Leiter auf ihrer hohen Kante zur besseren Wärmeabfuhr nicht isoliert sind.It is known to meet the conductor arrangement so that the cooling air Dissipate the heat from the current-carrying winding in the groove on both sides can or to arrange two groups of conductors in the groove, between which an air or Gas flow is created, which dissipates the heat. In principle, the same is liable to these arrangements Lack of, which is particularly disturbing in high-performance machines occurs. The conductors are in operation with such a high centrifugal force on the slot lock pressed that thermal expansions lead to irregular deformations, especially to the side Bends that lead the ladder. This mechanical deformation can in particular then give rise to difficulties and disturbances when the ladder is at its high Edge are not insulated for better heat dissipation.

Man hat ferner die Wicklung dadurch besser zu kühlen versucht, daß man sie aus Hohlleitern ausbildete. In diesem Falle sind die Leiter in ihrer Längsrichtung vom Kühlstrom durchflossen. Auch bei dieser Ausführungsform entsteht der Nachteil der seitlichen Verformung der Leiter, die die Nutenisolation gefährdet und zu Messeschlüssen führen kann.It has also tried to better cool the winding that they were formed from waveguides. In this case the conductors are in their longitudinal direction flowed through by the cooling stream. This embodiment also has the disadvantage the lateral deformation of the conductors, which endangers the slot insulation and leads to trade fair closings can lead.

Es sind auch elastisch nachgiebige Nutenleiter bekanntgeworden, die zur Verhinderung der schädlichen Wärmebewegungen mit Einschnitten und Aussparungen versehen sind. Diese Leiter haben den Nachteil, daß der dem Strom zur Verfügung stehende Querschnitt stellenweise stark reduziert wird. Diese Reduzierung des Querschnittes kann zur Folge haben, daß der Leiter örtlich im hohen Maße überlastet wird.There are also elastically resilient slot conductors known that to prevent harmful heat movements with cuts and recesses are provided. These conductors have the disadvantage that the electricity is available standing cross-section is greatly reduced in places. This reduction in cross section can have the consequence that the conductor is locally overloaded to a high degree.

Die Erfindung betrifft eine Anordnung, bei der die vorstehend aufgeführten Nachteile nicht auftreten. Erfindungsgemäß hat der Nutenleiter außen die Form von in Längsrichtung aneinandergereihten Rhomben und ist innen derartig ausgespart, daß ein annähernd gleicher Leiterquerschnitt zur Verfügung steht. Der Nutenleiter kann so ausgebildet sein, daß die Aussparungen, im Innern des Leiters Rhombenform haben. Man kann den Nutenleiter auch so augbilden, daß die Wandungen des in Längsrichtung geteilten Leiters in Richtung der Querdiagonalen der Rhomben stegartig miteinander verbunden sind.The invention relates to an arrangement in which the above-mentioned Disadvantages do not occur. According to the invention, the slot conductor has the shape of on the outside diamonds lined up in a longitudinal direction and is recessed on the inside in such a way that that an approximately identical conductor cross-section is available. The groove conductor can be designed in such a way that the recesses in the interior of the conductor are diamond-shaped to have. The slot conductor can also be formed in such a way that the walls of the in the longitudinal direction split conductor in the direction of the transverse diagonals of the rhombuses like a web are connected.

Ausführungsbeispiele gemäß der Erfindung sind in der Zeichnung dargestellt. In Fig. I und 2 besitzt der Nutenleiter I durch Stege 3 getrennte Längsschlitze 2. Der Leiter nach Fig. I ist so ausgebildet, daß die Aussparungen 2 im Innern des Leiters I Rhombenform haben. Der Leiter nach Fig. 2 ist so ausgebildet, daß die Wandungen 7 und 8 des in Längsrichtung geteilten Leiters I in Richtung der Querdiagonalen der Rhomben stegartig miteinander verbunden sind.Embodiments according to the invention are shown in the drawing. In FIGS. I and 2, the slot conductor I has longitudinal slots separated by webs 3 2. The head of Fig. I is designed so that the recesses 2 inside the Ladder I have a diamond shape. The conductor of Fig. 2 is designed so that the Walls 7 and 8 of the longitudinally divided conductor I in the direction of the transverse diagonals the rhombuses are connected to one another like a web.

Die Nutenleiter gemäß der Erfindung werden den Wärmespannungen bei Strombelastung gerecht. Außerdem ist durch ihre besondere Ausbildung für eine gute Kühlung gesorgt. Mit diesen Vorteilen ist bei dem erfindungsgemäß ausgebildeten Nutenleiter der Vorzug verbunden, daß dem Strom - abgesehen von den Stellen, wo sich ein Steg befindet- auf der gesamten Länge des Leiters derselbe Querschnitt zur Verfügung steht.The slot conductors according to the invention are the thermal stresses Electricity load fair. In addition, thanks to their special training, they are good Cooling provided. With these advantages is the one designed according to the invention Slot conductors have the advantage of being connected to the current - apart from the places where there is a bar - the same cross-section along the entire length of the conductor is available.

Claims (3)

PATENTANSPRÜCHE: I. Für elektrische Maschinen, insbesondere Turbo-Generatoren, dienender Nutenleiter, der zur Erhöhung der Wärmeabfuhr und der Elastizität Aussparungen aufweist, dadurch gekennzeichnet, daß der Leiter außen die Form von in Längsrichtung aneinandergereihten Rhomben hat und innen derartig ausgespart ist, daß ein annähernd gleicher Leiterquerschnitt zur Verfügung steht. PATENT CLAIMS: I. For electrical machines, in particular turbo-generators, serving grooved conductor, which has recesses to increase heat dissipation and elasticity, characterized in that the conductor has the shape of diamonds lined up in a longitudinal direction on the outside and is recessed on the inside in such a way that a approximately the same conductor cross-section is available. 2. Nutenleiter nach Anspruch I, .dadurch gekennzeichnet, daß die Aussparungen (2) im Innern des Leiters (I) Rhombenform haben (Fig. I). 2. Groove conductor according to claim I, characterized in that the recesses (2) inside the conductor (I) have a diamond shape (Fig. I). 3. Nutenleiter nach Anspruch I, dadurch gekennzeichnet, daß die Wandungen (7) des in Längsrichtung geteilten Leiters (i) in Richtung der Querdiagonalen der Rhomben (2) stegartig miteinander verbunden sind (Fig. 2). In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 58q.638; USA.-Patentschrift Nr. 2 043 i20.3. Groove conductor according to claim I, characterized in that the walls (7) of the divided in the longitudinal direction Head (i) in the direction of the transverse diagonals of the rhombi (2) like a web are connected (Fig. 2). Publications considered: German patent specification No. 58q.638; U.S. Patent No. 2,043,120.
DEL11686A 1952-02-29 1952-02-29 For electrical machines, especially turbo generators, used slot conductor Expired DE969274C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL11686A DE969274C (en) 1952-02-29 1952-02-29 For electrical machines, especially turbo generators, used slot conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL11686A DE969274C (en) 1952-02-29 1952-02-29 For electrical machines, especially turbo generators, used slot conductor

Publications (1)

Publication Number Publication Date
DE969274C true DE969274C (en) 1958-05-14

Family

ID=7258930

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL11686A Expired DE969274C (en) 1952-02-29 1952-02-29 For electrical machines, especially turbo generators, used slot conductor

Country Status (1)

Country Link
DE (1) DE969274C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE584638C (en) * 1931-04-03 1933-09-22 Aeg Device to prevent the harmful effects of heat movements by means of elastically flexible sections in winding parts of electrical machines
US2043120A (en) * 1933-09-30 1936-06-02 Punga Franklin Cooling the inductors of turbo-generators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE584638C (en) * 1931-04-03 1933-09-22 Aeg Device to prevent the harmful effects of heat movements by means of elastically flexible sections in winding parts of electrical machines
US2043120A (en) * 1933-09-30 1936-06-02 Punga Franklin Cooling the inductors of turbo-generators

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