WO1999039423A1 - High voltage electrical machine - Google Patents
High voltage electrical machine Download PDFInfo
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000010445 mica Substances 0.000 claims abstract description 12
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 239000011888 foil Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000016507 interphase Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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
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.
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 |
Family
ID=7855946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1998/002977 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)
| 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)
| 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 |
-
1998
- 1998-10-08 WO PCT/DE1998/002977 patent/WO1999039423A1/en not_active Application Discontinuation
- 1998-10-08 EP EP98959718A patent/EP0992101A1/en not_active Withdrawn
- 1998-10-08 HU HU0003532A patent/HUP0003532A3/en unknown
Patent Citations (4)
| 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)
| 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)
| 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 |
|---|---|
| HUP0003532A3 (en) | 2001-06-28 |
| EP0992101A1 (en) | 2000-04-12 |
| HUP0003532A2 (en) | 2001-02-28 |
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