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WO1999039423A1 - High voltage electrical machine - Google Patents

High voltage electrical machine Download PDF

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Publication number
WO1999039423A1
WO1999039423A1 PCT/DE1998/002977 DE9802977W WO9939423A1 WO 1999039423 A1 WO1999039423 A1 WO 1999039423A1 DE 9802977 W DE9802977 W DE 9802977W WO 9939423 A1 WO9939423 A1 WO 9939423A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
high voltage
wire
electrical machine
mica
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.)
Ceased
Application number
PCT/DE1998/002977
Other languages
German (de)
French (fr)
Inventor
Thomas Partzsch
Germar Müller
Wolfgang Golbig
Holger Klotsche
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19803308A external-priority patent/DE19803308C2/en
Application filed by Individual filed Critical Individual
Priority to EP98959718A priority Critical patent/EP0992101A1/en
Publication of WO1999039423A1 publication Critical patent/WO1999039423A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges

Definitions

  • the invention relates to electrical machines in high-voltage configuration with rated voltages up to 6.6 kV.
  • Foil coil winding with flat wires is labor-intensive to manufacture and requires a high level of technological effort. - 2 -
  • the invention has for its object to provide an electrical machine for rated voltages up to 6.6 kN.
  • the winding is easier to manufacture than a form coil winding with flat wires and avoids the adverse effects on the performance of high-voltage machines.
  • the electrical machines according to the invention in the high voltage version offer the same operating properties as the high voltage machines previously filled with shaped coil winding with flat wires, but are much easier to manufacture.
  • Semi-closed grooves are to be understood as meaning grooves with a groove bottom slot whose width is considerably smaller than the groove width. This reliably avoids the disadvantageous effect of open grooves, or eliminates the high outlay for introducing the magnetic groove closures.
  • this novel high-voltage winding according to the invention at rated voltages up to 3.3 kV enables the use of sheets or the like.
  • a complete laminated core of a low-energy asynchronous machine In the half-open grooves 2 of such a laminated core, a groove cover 3 made of a mica-containing surface insulation material with a thickness of up to 0.8 mm is inserted.
  • This groove lining 3 has a protrusion of the insulation of up to 25 mm at the groove exit.
  • the introduced round wire trickle winding 1 can be made both with foil mica tape with a thickness of 0J mm to 30% overlapped banded L. ackwire or bare wire exist.
  • each coil lying in each case in two slots is resolved into at least two superposed partial coils 4 and 6 which are insulated from one another by an intermediate 5.
  • a complete laminated core of a low-voltage asynchronous machine m the half-open grooves 2 of such a laminated core is a groove 3 made of a rubber-containing surface insulating material, one or more layers, with a total thickness of up to 1.5 mm.
  • This groove cutout 3 has a protrusion of the insulation of up to 65 mm at the groove exit.
  • the introduced round wire trickle winding 1 can consist of enameled wire or bare wire which is overlapped with foil mica tape with a thickness of 0.1 mm to 66%. The switching ends are banded several times overlapping using the same foil mica tape, which results in reinforced insulation.
  • the further embodiment of the solution according to the invention for rated voltages 6.6 kV is analogous to the 3.3 kV version.
  • the drawing shows a round wire trickle winding 1 according to the invention as a winding in a semi-open groove 2 with a groove cutout 3 of an upper coil section 4, an intermediate layer 5 and a lower coil section 6 closed with a cover strip 7.
  • the electrical machine is impregnated with solvent-free impregnating agent.
  • the electrical machine according to the invention in high-voltage design with a winding produced as a round wire trickle winding 1 meets the requirements of IEC publication 34-15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The invention relates to a high voltage electrical machine for rated voltages up to 6.6 kV whose winding can be produced as a preformed winding with flat wires using simplified manufacturing techniques. In addition, said winding prevents disadvantageous affects on the operational performance of high voltage machines. To this end, a round-wire mush winding (1) is used in enameled wires or bare wires. The wire, including the free ends, is taped with the film-mica tape in an overlapping manner. Each spool respectively lying in two semi-open slots (2) is unraveled into at least two stacked partial spools (4, 6) which are connected in succession and which are insulated from one another by intermediate layers (5). The slot lining (3) and the interphase insulation are made of an insulating sheeting material containing mica. The area of application of the invention is in the construction of electrical machines.

Description

Elektrische Maschine in HochspannungsausführungHigh voltage electrical machine

Die Er indung betrifft eleltrische Maschinen in Hochspannungsausftlirung mit Bemessungsspannungen bis 6,6 kV.The invention relates to electrical machines in high-voltage configuration with rated voltages up to 6.6 kV.

Solcherart elektrische Maschinen werden heute mit Wicklungen aus Fornispulen mit Flachdrähten (auch Profildrähte genannt) ausgefülirt. Ausführliche Aussagen hier.zu .findet man u.a. im SEQUENZ, H. :Such electrical machines are today filled with windings made from Fornis coils with flat wires (also called profile wires). Detailed statements can be found here. in SEQUENCE, H.:

Herstellung der Wicklungen elektrischer Maschinen, Wien, Springer-Nerlag 1973 ab Seite 107. Ein Einsatz von Foimspulen wird hier oberhalb 1000 N Bemessungsspannung beschrieben.Manufacture of the windings of electrical machines, Vienna, Springer-Nerlag 1973 from page 107. The use of foam coils is described here above 1000 N rated voltage.

Eine allgemeingültige, heute unter Fachleuten verwendete Definition von Spannungsebenen findet sich im Lexikon Elektroteclinik, NCH Nerlagsgesellschaft mbH, Weinheim, New Yorlc, 1994, S. 625. Hochspannung ist demzufolge eine Spannung größer 1000 V. Unter Niederspannung versteht der Fachmann Spannungjsebenen kleiner, gleich 1000 V.A general definition of voltage levels that is used by experts today can be found in the Lexikon Elektroteclinik, NCH Nerlagsgesellschaft mbH, Weinheim, New Yorlc, 1994, p. 625. High voltage is therefore a voltage greater than 1000 V. Low voltage is understood by experts to be voltage levels less than or equal to 1000 V.

Um isolierte Fornispulen aus Profildrähten in Blechpakete einfügen m können, ist es erforderlich, in den Blechpaketen offene Nuten anzuordnen, was sich nachteilig auf das Betriebsverhalten auswirkt, b.zw. es erforderlich macht, die Nuten aufwendig mit magnetischen Nutverschlüssen .zu verschließen, um diese Nachteile .zu vermeiden.In order to be able to insert insulated Fornis coils from profiled wires into laminated cores, it is necessary to arrange open slots in the laminated cores, which has a disadvantageous effect on the operating behavior, e.g. it is necessary to close the slots with magnetic slot closures, in order to avoid these disadvantages.

m den Festlegungen der IEC Publikation 34-15 zu den heutigen Anforderungen an die Stoßspannungsfestigkeit von elektrischen Maschinen im Hochspannungsbereich wird nur auf Foπnspulenwicklungen mit Flachdrähten bezug genommen. Dabei wird offensichtlich davon ausgegangen, daß ausschließlich Formspulen für elektrische Maschinen in Hochspannungsausffihrung Verwendung finden.m the stipulations of IEC publication 34-15 on today's requirements for the surge voltage resistance of electrical machines in the high-voltage range only refer to flat coil windings with flat wires. It is obviously assumed that only high-voltage form coils for electrical machines are used.

FoimspulenwiCaklungen mit Flachdrähten sind in der Herstellung arbeitszeitintensiv und bedingen einen hohen technologischen Aufwand. - 2 -Foil coil winding with flat wires is labor-intensive to manufacture and requires a high level of technological effort. - 2 -

Der Erfindung liegt die Aufgabe zugrunde, eine elektrische Maschine für Bemessungsspannungen bis 6,6 kN .zu schaffen, deren Wicklung sich fertigungstechnisch einfacher als eine Formspulenwicklung mit Flachdrähten herstellen läßt und die nachteilige Auswirkungen auf das Betriebsverhalten von Hochspannungsmaschinen vermeidet.The invention has for its object to provide an electrical machine for rated voltages up to 6.6 kN. The winding is easier to manufacture than a form coil winding with flat wires and avoids the adverse effects on the performance of high-voltage machines.

Erfindungsgemäß wird die Aufgabe durch den Patentanspruch gelöst. Überraschenderweise wurde gefunden, daß an sich bekannte technische Merl male aus dem Bereich elektrischer Νiederspannungsmaschinen in der erfindungsgemäßen Kombination auch .für elektrische Maschinen in Hochspannungsausführung einsetzbar sind. Die Verwendung von Runddraht-Träufelwicklungen für Hochspannungsmaschinen ist bisher absolut ungebräuchlich.According to the invention the object is achieved by the patent claim. Surprisingly, it has been found that technical materials known per se from the field of electrical low-voltage machines in the combination according to the invention can also be used for high-voltage electrical machines. The use of round wire trickle windings for high-voltage machines has so far been absolutely uncommon.

.Die erfindungsgemäßen elektrischen Maschinen in Hoclιsp.annungsausführung bieten die gleichen Betriebseigenschaften wie die bisher mit Formspulenwicldung mit Flachdrähten ausgefüllten Hochspannungsmaschinen, lassen sich jedoch viel einfacher herstellen.The electrical machines according to the invention in the high voltage version offer the same operating properties as the high voltage machines previously filled with shaped coil winding with flat wires, but are much easier to manufacture.

Unter halbgeschlossenen Nuten sind Nuten mit einem Nutsohlitz, dessen Breite wesentlich kleiner als die Nutbreite ist, zu verstehen. Damit wird die nachteilige Wirkung offener Nuten .zuverlässig vermieden, bzw. der hohe Aufwand zum Einbringen der magnetischen Nutverschlüsse entfällt.Semi-closed grooves are to be understood as meaning grooves with a groove bottom slot whose width is considerably smaller than the groove width. This reliably avoids the disadvantageous effect of open grooves, or eliminates the high outlay for introducing the magnetic groove closures.

Die Erfindung soll nachstehend anhand von Ausfülirungsbeispielen näher beschrieben werden.The invention will be described in more detail below on the basis of examples of fillings.

Der erfindungsgemäße Aufbau dieser neuartigen Hochspannungswicldung bei Bemessungsspannungen bis 3,3 kV ermöglicht die Verwendung von Blechen b.zw. eines vollständigen Blechpakts einer Niedersparmungs- Asynchronmaschine. In die halboffenen Nuten 2 eines der.artigen Blechpakets ist eine Nutausldeidung 3 aus einem glimmerhaltigen πächenisolierstoff mit einer Dicke von bis .zu 0,8 mm eingelegt. Diese Nutauskleidung 3 hat am Nutausgang einen Überstand der Isolierung bis zu 25 mm. Die eingebrachte Runddraht- Träufelwicklung 1 kann sowohl aus mit Folienglimmerband mit einer Dicke von 0J mm bis 30 % überlappt umbandelten L . ackdraht oder auch Blankdraht bestehen. Die Schaltenden sind mehrfach unter Verwendung des gleichen Folienglimmerbandes überlappt umbandelt, wodurch eine verstärkte Isolierung entsteht. .Als Phasenisolierung ist ein glimmerhaltiger Hächenisolierstoff angeordnet. Des weiteren ist jede jeweils in zwei Nuten liegende Spule in mindestens .zwei übereinanderliegende, hintereineandergeschaltete und gegeneinander durch eine Zwischenl-ige 5 isolierte Teilspulen 4 und 6 aufgelöst.The structure of this novel high-voltage winding according to the invention at rated voltages up to 3.3 kV enables the use of sheets or the like. a complete laminated core of a low-energy asynchronous machine. In the half-open grooves 2 of such a laminated core, a groove cover 3 made of a mica-containing surface insulation material with a thickness of up to 0.8 mm is inserted. This groove lining 3 has a protrusion of the insulation of up to 25 mm at the groove exit. The introduced round wire trickle winding 1 can be made both with foil mica tape with a thickness of 0J mm to 30% overlapped banded L. ackwire or bare wire exist. The switching ends are banded several times overlapping using the same foil mica tape, which results in reinforced insulation. A micaceous surface insulating material is arranged as phase insulation. Furthermore, each coil lying in each case in two slots is resolved into at least two superposed partial coils 4 and 6 which are insulated from one another by an intermediate 5.

Der erfindungsgemäße Auftau dieser neuartigen Hochspannungswicldung bei Bemessungsspannungen bis 6,6 kV ermöglicht ebenfalls die Verwendung von Blechen b.zw. eines vollständigen Blechpakts einer Niederspannungs- Asynchronmaschine, m die halboffenen Nuten 2 eines derartigen Blechpakets ist eine Nutausldeidung 3 aus einem gümmerhaltigen Flächenisolierstoff ein oder mehrlagig mit einer Gesamtdicke von bis .zu 1,5 mm eingelegt. Diese Nutausldeidung 3 hat am Nutausgang einen Überstand der Isolierung bis .zu 65 mm. Die eingebrachte Runddraht-Träufelwicklung 1 kann sowoW aus mit Folienglimmerband mit einer Dicke von 0, 1 mm bis 66 % überlappt umbandelten Lackdraht oder auch Blankdraht bestehen. Die Schaltenden sind mehrfach unter Verwendung des gleichen Folienglimmerbandes überlappt umbandelt, wodurch eine verstärkte Isolierung entsteht. Die weitere AusfAll-rung der erfindungsgemäßen Lösung für Bemessungsspannungen 6,6 kV ist analog der 3,3 kV Ausführung.The thawing of this novel high-voltage winding according to the invention at rated voltages up to 6.6 kV also enables the use of metal sheets or the like. a complete laminated core of a low-voltage asynchronous machine, m the half-open grooves 2 of such a laminated core is a groove 3 made of a rubber-containing surface insulating material, one or more layers, with a total thickness of up to 1.5 mm. This groove cutout 3 has a protrusion of the insulation of up to 65 mm at the groove exit. The introduced round wire trickle winding 1 can consist of enameled wire or bare wire which is overlapped with foil mica tape with a thickness of 0.1 mm to 66%. The switching ends are banded several times overlapping using the same foil mica tape, which results in reinforced insulation. The further embodiment of the solution according to the invention for rated voltages 6.6 kV is analogous to the 3.3 kV version.

.Die Zeichnung zeigt eine erfindungsgemäßen Runddraht-Träufelwicldung 1 als Emsclύchtwicklung in einer halboffenen Nut 2 mit einer Nutausldeidung 3 einer oberen Teilspule 4 einer Zwischenlage 5 und einer unteren Teilspule 6 verschlossen mit einem Deckstreifen 7.The drawing shows a round wire trickle winding 1 according to the invention as a winding in a semi-open groove 2 with a groove cutout 3 of an upper coil section 4, an intermediate layer 5 and a lower coil section 6 closed with a cover strip 7.

Die elektrische Maschine wird einer Tränkung mit lösungsmittelfreien Imprägniermittel unterzogen.The electrical machine is impregnated with solvent-free impregnating agent.

Die erfindungsgemäße elelctrische Maschine in Hochsp.annungsausfüfιrung mit einer als Runddraht-Träufelwicklung 1 hergestellten Wicklung erfüllt die Forderungen der IEC Publikation 34-15. The electrical machine according to the invention in high-voltage design with a winding produced as a round wire trickle winding 1 meets the requirements of IEC publication 34-15.

Claims

- 4 -Patentanspruch - 4 -patent claim 1. Elektrische Maschine in Hochspannungsausführung mit einer mit lösungsmittelfreiem Imprägniermittel imprägnierten Wicklung, dadurch gekennzeichnet,1. Electrical machine in high voltage design with a winding impregnated with solvent-free impregnating agent, characterized in that - daß in halboffenen Nuten (2) des Blechpakets eine Nutauskleidung (3) aus einem glimmerhaltigen Flächenisolierstoff angeordnet ist,- That a groove lining (3) made of a mica-containing surface insulating material is arranged in half-open grooves (2) of the laminated core, - daß in den Nuten eine Runddraht -Träufelwicklung (1) in Lack- oder Blankdrahtausführung eingelegt ist,- That a round wire trickle winding (1) in lacquered or bare wire design is inserted in the slots, - daß der Lack- oder Blankdraht dieser Wicklung (1) mit Folienglimmerband ein- oder mehrlagig überlappt umbandelt ist,- That the enamelled or bare wire of this winding (1) is banded with one or more layers of foil mica tape, - daß die Schaltenden unter Verwendung des gleichen Folienglimmerbands ein- oder mehrlagig überlappt umbandelt sind,that the switching ends are banded using the same foil mica tape overlapped in one or more layers, - daß ein glimmerhaltiger Flächenisolierstoff oder ein Folienglimmerband ein- oder mehrlagig und überlappt als Phasenisolierung angeordnet ist und- That a mica-containing surface insulating material or a foil mica tape is arranged in one or more layers and overlapped as phase insulation and - daß jede jeweils in .zwei Nuten liegende Spule in mindestens zwei übereinanderliegende, hintereinandergeschaltete und gegeneinander durch Zwischenlagen (5) isolierte Teilspulen (4 und 6) aufgelöst ist. - That each coil lying in. two slots in at least two superposed, series-connected and mutually isolated by intermediate layers (5) partial coils (4 and 6) is resolved.
PCT/DE1998/002977 1998-01-29 1998-10-08 High voltage electrical machine Ceased WO1999039423A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98959718A EP0992101A1 (en) 1998-01-29 1998-10-08 High voltage electrical machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803308A DE19803308C2 (en) 1997-04-12 1998-01-29 High voltage electrical machine
DE19803308.7 1998-01-29

Publications (1)

Publication Number Publication Date
WO1999039423A1 true WO1999039423A1 (en) 1999-08-05

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PCT/DE1998/002977 Ceased WO1999039423A1 (en) 1998-01-29 1998-10-08 High voltage electrical machine

Country Status (3)

Country Link
EP (1) EP0992101A1 (en)
HU (1) HUP0003532A3 (en)
WO (1) WO1999039423A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124977B2 (en) 2003-10-15 2006-10-24 Actown Electrocoil, Inc. Magnetic core winding apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177241A (en) * 1981-04-24 1982-10-30 Hitachi Ltd Coil for electric machine
EP0066633A1 (en) * 1981-06-04 1982-12-15 Nikkiso Co., Ltd. Process for forming a ceramic-like insulation
JPS5872349A (en) * 1981-10-23 1983-04-30 Toshiba Corp Manufacture of hexagonal insulating coil
JPS58127539A (en) * 1982-01-22 1983-07-29 Hitachi Ltd Air gap stator coil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177241A (en) * 1981-04-24 1982-10-30 Hitachi Ltd Coil for electric machine
EP0066633A1 (en) * 1981-06-04 1982-12-15 Nikkiso Co., Ltd. Process for forming a ceramic-like insulation
JPS5872349A (en) * 1981-10-23 1983-04-30 Toshiba Corp Manufacture of hexagonal insulating coil
JPS58127539A (en) * 1982-01-22 1983-07-29 Hitachi Ltd Air gap stator coil

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 021 (E - 155) 27 January 1983 (1983-01-27) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 166 (E - 188) 21 July 1983 (1983-07-21) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 239 (E - 206) 25 October 1983 (1983-10-25) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124977B2 (en) 2003-10-15 2006-10-24 Actown Electrocoil, Inc. Magnetic core winding apparatus
US7154368B2 (en) 2003-10-15 2006-12-26 Actown Electricoil, Inc. Magnetic core winding method, apparatus, and product produced therefrom
US7159816B2 (en) 2003-10-15 2007-01-09 Actown Electricoil, Inc. Magnetic core winding method

Also Published As

Publication number Publication date
HUP0003532A2 (en) 2001-02-28
HUP0003532A3 (en) 2001-06-28
EP0992101A1 (en) 2000-04-12

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