WO2016173608A1 - Method of making multi-turn coils - Google Patents

Method of making multi-turn coils Download PDF

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Publication number
WO2016173608A1
WO2016173608A1 PCT/EP2015/059000 EP2015059000W WO2016173608A1 WO 2016173608 A1 WO2016173608 A1 WO 2016173608A1 EP 2015059000 W EP2015059000 W EP 2015059000W WO 2016173608 A1 WO2016173608 A1 WO 2016173608A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulation
turn
coil
loop regions
removal
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/EP2015/059000
Other languages
French (fr)
Inventor
Inna KREMZA
Jeff Fenwick
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to CA2984122A priority Critical patent/CA2984122C/en
Priority to US15/569,899 priority patent/US10523076B2/en
Priority to PCT/EP2015/059000 priority patent/WO2016173608A1/en
Publication of WO2016173608A1 publication Critical patent/WO2016173608A1/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
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
    • H02K15/043—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines winding flat conductive wires or sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in the machines
    • H02K15/062—Windings in slots; Salient pole windings
    • H02K15/065—Windings consisting of complete sections, e.g. coils or waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
    • 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
    • H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H02K3/505—Fastening of winding heads, equalising connectors, or connections thereto for large machine windings, e.g. bar windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/10—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes
    • H02K15/105—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes to the windings

Definitions

  • This invention relates to multi-turn coils for dynamoelectric machines and to a method of fabricating machines utilizing the multi-turn coils. More particularly, the invention relates to the forming and insulating of multi-turn coils and the insertion of multi-turn coils into the machine slots.
  • Multi-turn coils carry electrical current and are embedded in the slots of the stator core of dynamoelectric machines. They operate at a voltage that is elevated above the stator core. The latter is considered to be at ground potential. The two sides or legs of each coil are located in two separate slots in the core.
  • the multi-turn winding is manufactured from a conductor of one or more strands (typically but not limited to copper) and an electrical insulation system.
  • the insulation consists of wire insulation, turn insulation (to prevent turn-to-turn electrical short circuits) and ground insulation (to insulate the coil from the grounded stator core). During installation of the coils, the conductors and insulation system have to be flexed and will be deformed.
  • Fig. 1 shows a multi-turn coil after winding and application of the turn insulation
  • Fig. 2 shows a multi-turn coil after forming and application of ground insulation in accordance with this invention
  • Fig. 3 shows the loop region of a multi-turn coil after removal of the turn insulation in accordance with this invention
  • Fig. 4 shows the loop region of a multi-turn coil after restoration of the turn insulation in accordance with this invention
  • Fig. 5 shows the loop region of a multi-turn coil after completion of the ground insulation in accordance with this invention
  • Fig. 6 is a flow chart illustrating in block diagram form a method of manufacturing and of installating a multi-turn coil in accordance with this invention.
  • Fig. 7 is a flow chart illustrating in block diagram form a method of manufacturing a multi-turn coil in accordance with this invention.
  • Fig. 8 is a flow chart illustrating in block diagram form another embodiment of a method of manufacturing a multi-turn coil in accordance with this invention
  • Fig. 9 is a flow chart illustrating in block diagram form another embodiment of a method of manufacturing a multi-turn coil in accordance with this invention
  • Fig. 10 is a flow chart illustrating in block diagram form a method of installation a multi-turn coil in accordance with this invention.
  • the different embodiments of the current invention are resulting from different methods of insulation which are causing slight modifications of the inventive method.
  • One difference consists in the way the conductors are initially insulated. Some conductors are initially insulated in a way that the wire insulation includes already the turn insulation and therefore during winding no turn insulation has to be applied.
  • a multi-turn coil in accordance with this invention is made by initially winding an insulated conductor whereas the conductor is insulated by the so called wire insulation.
  • Fig. 1 shows a multi-turn coil after winding and application of the turn insulation. The straight slot region is indicated by 1 1 and the bent loop region is indicated by 10.
  • FIG. 2 shows a multi-turn coil after forming and application of the ground insulation 15 to the slot regions 1 1 .
  • the ground insulation 15 extends somewhat above the straight slot regions 1 1 but the bent loop regions 10 are free of ground insulation. The details concerning the loop region are shown in Fig. 3 to 5.
  • the current inventive method is based on the idea to apply the complete insulation system to the slot regions of the coil only before the coil is inserted in the stator core, whereas the loop regions are left without at least the ground insulation before insertion.
  • the insulation in the loop regions will be completed after insertion of the coils into the stator core slots.
  • Fig. 3 shows the loop region of a multi-turn coil in the same situation as in Fig.2.
  • the ground insulation 15 is finishing with a taper 16 before the loop region.
  • the turn insulation 14 has also been removed.
  • a conductor without turn insulation is indicated by 12.
  • Spacers 13 are located between the conductors in the loop regions. Preferably the spacers are made of flexible material. The spacers have been placed in these positions during winding of the coil. It is expedient if the spacers 13 are wrapped in release tape or coated accordingly for easy removal of the spacers.
  • the starting points where the turn insulation has been removed are staggered on subsequent turns to facilitate the final application of turn insulation by distributing the insulation build-up after the coil has been inserted in the stator core slot.
  • Fig. 4 shows the loop region of a multi-turn coil after installation into the stator core slots and restoration of the turn insulation 14.
  • the turn insulation tape has been wound around the conductor turns to overlap the existing turn insulation.
  • Fig. 5 shows the loop region of a multi-turn coil after completion of the ground insulation 15. This has been done by application of ground insulation tape with the resin brushed in between over the coil loop region to overlap with the existing taper on both sides.
  • step 1 comprises the manufacturing of a multi-turn coil
  • step 2 comprises the installation of the coil into the stator core.
  • step 1 leaves the loop regions of the coil at least without ground insulation.
  • the turn insulation is removed within the loop regions.
  • step 2 the insulation of the multi-turn coil is completed in the loop regions.
  • Fig. 7 shows sub-steps of step 1 from Fig.6 for one embodiment of the current invention.
  • Step 1 .1 comprises winding of the conductor, application of turn insulation, application of spacers between the turns within the loop regions and forming the coil.
  • Step 1 .2 comprises the application of ground insulation within the slot regions.
  • Step 1 .3 comprises the removal of turn insulation within the loop regions.
  • Step 1 .4 comprises the impregnation of the insulation with resin.
  • Step 1 .5 comprises removal of the spacers, washing the loop regions (removal of any resin) and insertion of wedges to maintain the spacing between the turns. It is expedient if the wedges are wrapped in release tape or coated accordingly to be easily removed.
  • Step 1 .6 comprises curing of the insulation and removal of the wedges.
  • Fig. 8 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention.
  • Step 1 .1 comprises winding of the conductor, application of spacers between the turns within the loop regions and forming the coil.
  • Step 1 .2 comprises the application of ground insulation within the slot regions.
  • Step 1 .4 comprises the impregnation of the insulation with resin.
  • Step 1 .5 comprises removal of the spacers, washing the loop regions (removal of any resin) and insertion of wedges to maintain the spacing between the turns.
  • Step 1 .6 comprises curing of the insulation and removal of the wedges.
  • Fig. 9 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention.
  • Step 1 .1 comprises winding of the conductor, application of turn insulation, application of spacers between the turns within the loop regions and forming the coil.
  • Step 1 .2 comprises the application of ground insulation within the slot regions.
  • Step 1 .3 comprises the removal of turn insulation within the loop regions.
  • Step 1 .5 comprises removal of the spacers and insertion of wedges to maintain the spacing between the turns.
  • Step 1 .6 comprises curing of the insulation and removal of the wedges.
  • Fig. 10 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention.
  • Step 1 .1 comprises winding of the conductor, application of spacers between the turns within the loop regions and forming the coil.
  • Step 1 .2 comprises the application of ground insulation within the slot regions.
  • Step 1 .5 comprises removal of the spacers and insertion of wedges to maintain the spacing between the turns.
  • Step 1 .6 comprises curing of the insulation and removal of the wedges.
  • Fig. 1 1 shows sub-steps of step 2 in Fig.6.
  • Step 2.1 comprises the installation of the coil into the stator core.
  • Step 2.2 comprises the restoration of the turn insulation within the loop regions.
  • Step 2.3 comprises the completion of the ground insulation within the loop regions.
  • the sub-steps of step 2 are differing only slightly according to the different embodiments of the current invention.
  • the wire insulation comprises the turn insulation step 2.2 means repairing the wire insulation (including turn insulation) where damaged during installation of the coil into the stator core.
  • steps 2.2 and 2.3 are performed using an insulation system which cures at room temperature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Method of fabricating a dynamoelectric machine utilizing multi-turn coils comprising manufacturing of a multi-turn coil having turn and ground insulation and installation of said coil into the stator core of said machine characterized in that the loop regions of said coil have no ground insulation during installation and the ground insulation at the loop regions is completed after installation of the coil.

Description

Method of making multi-turn coils
This invention relates to multi-turn coils for dynamoelectric machines and to a method of fabricating machines utilizing the multi-turn coils. More particularly, the invention relates to the forming and insulating of multi-turn coils and the insertion of multi-turn coils into the machine slots.
Multi-turn coils carry electrical current and are embedded in the slots of the stator core of dynamoelectric machines. They operate at a voltage that is elevated above the stator core. The latter is considered to be at ground potential. The two sides or legs of each coil are located in two separate slots in the core. The multi-turn winding is manufactured from a conductor of one or more strands (typically but not limited to copper) and an electrical insulation system. The insulation consists of wire insulation, turn insulation (to prevent turn-to-turn electrical short circuits) and ground insulation (to insulate the coil from the grounded stator core). During installation of the coils, the conductors and insulation system have to be flexed and will be deformed. Excessive stress in the coils may cause cracks or other damage in the insulation system which can lead to electrical test failures or failures in service caused by electrical, thermal and mechanical stresses during operation. This problem is well known and serval solutions have been proposed in prior art. As an example we want to mention N.A. Beddows' U.S. Patent No. 3,750,273.
The instant application solves the problem in a different manner. Although this invention is described with particularity in the appended claims, a more complete understanding of the invention may be obtained from the following detailed description of the specific embodiments taken in conjunction with the appended drawings wherein:
Fig. 1 shows a multi-turn coil after winding and application of the turn insulation, and Fig. 2 shows a multi-turn coil after forming and application of ground insulation in accordance with this invention, and
Fig. 3 shows the loop region of a multi-turn coil after removal of the turn insulation in accordance with this invention, and
Fig. 4 shows the loop region of a multi-turn coil after restoration of the turn insulation in accordance with this invention, and
Fig. 5 shows the loop region of a multi-turn coil after completion of the ground insulation in accordance with this invention, and
Fig. 6 is a flow chart illustrating in block diagram form a method of manufacturing and of installating a multi-turn coil in accordance with this invention, and
Fig. 7 is a flow chart illustrating in block diagram form a method of manufacturing a multi-turn coil in accordance with this invention, and
Fig. 8 is a flow chart illustrating in block diagram form another embodiment of a method of manufacturing a multi-turn coil in accordance with this invention, and Fig. 9 is a flow chart illustrating in block diagram form another embodiment of a method of manufacturing a multi-turn coil in accordance with this invention, and Fig. 10 is a flow chart illustrating in block diagram form a method of installation a multi-turn coil in accordance with this invention. The different embodiments of the current invention are resulting from different methods of insulation which are causing slight modifications of the inventive method. One difference consists in the way the conductors are initially insulated. Some conductors are initially insulated in a way that the wire insulation includes already the turn insulation and therefore during winding no turn insulation has to be applied. The other difference belongs to the insulation process used for the turn and ground insulation. One process is using a vacuum pressure impregnation (VPI) system for impregnating the insulation tapes with resin. At the other process the resin is contained in the tapes themselves. If not other stated the following description relays on conductors which need an additional turn insulation and on using a VPI system. A multi-turn coil in accordance with this invention is made by initially winding an insulated conductor whereas the conductor is insulated by the so called wire insulation. Fig. 1 shows a multi-turn coil after winding and application of the turn insulation. The straight slot region is indicated by 1 1 and the bent loop region is indicated by 10. Fig. 2 shows a multi-turn coil after forming and application of the ground insulation 15 to the slot regions 1 1 . The ground insulation 15 extends somewhat above the straight slot regions 1 1 but the bent loop regions 10 are free of ground insulation. The details concerning the loop region are shown in Fig. 3 to 5.
The current inventive method is based on the idea to apply the complete insulation system to the slot regions of the coil only before the coil is inserted in the stator core, whereas the loop regions are left without at least the ground insulation before insertion. The insulation in the loop regions will be completed after insertion of the coils into the stator core slots.
Fig. 3 shows the loop region of a multi-turn coil in the same situation as in Fig.2. The ground insulation 15 is finishing with a taper 16 before the loop region. In the loop region the turn insulation 14 has also been removed. A conductor without turn insulation is indicated by 12. Spacers 13 are located between the conductors in the loop regions. Preferably the spacers are made of flexible material. The spacers have been placed in these positions during winding of the coil. It is expedient if the spacers 13 are wrapped in release tape or coated accordingly for easy removal of the spacers. The starting points where the turn insulation has been removed are staggered on subsequent turns to facilitate the final application of turn insulation by distributing the insulation build-up after the coil has been inserted in the stator core slot.
After the coils have been installed in the stator core, the insulation of the loop regions will be completed. Fig. 4 shows the loop region of a multi-turn coil after installation into the stator core slots and restoration of the turn insulation 14. The turn insulation tape has been wound around the conductor turns to overlap the existing turn insulation. Fig. 5 shows the loop region of a multi-turn coil after completion of the ground insulation 15. This has been done by application of ground insulation tape with the resin brushed in between over the coil loop region to overlap with the existing taper on both sides.
Fig. 6 shows the two major steps of the current inventive method, whereas step 1 comprises the manufacturing of a multi-turn coil and step 2 comprises the installation of the coil into the stator core. According to the current invention step 1 leaves the loop regions of the coil at least without ground insulation. In one embodiment of the invention also the turn insulation is removed within the loop regions. At the end of step 2 the insulation of the multi-turn coil is completed in the loop regions.
Fig. 7 shows sub-steps of step 1 from Fig.6 for one embodiment of the current invention. This embodiment applies to the case where the conductors have to be insulated with separate turn insulation and VPI is used. Step 1 .1 comprises winding of the conductor, application of turn insulation, application of spacers between the turns within the loop regions and forming the coil. Step 1 .2 comprises the application of ground insulation within the slot regions. Step 1 .3 comprises the removal of turn insulation within the loop regions. Step 1 .4 comprises the impregnation of the insulation with resin. Step 1 .5 comprises removal of the spacers, washing the loop regions (removal of any resin) and insertion of wedges to maintain the spacing between the turns. It is expedient if the wedges are wrapped in release tape or coated accordingly to be easily removed. Step 1 .6 comprises curing of the insulation and removal of the wedges.
Fig. 8 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention. This embodiment applies to the case where the conductors have not to be insulated with separate turn insulation and VPI is used. Step 1 .1 comprises winding of the conductor, application of spacers between the turns within the loop regions and forming the coil. Step 1 .2 comprises the application of ground insulation within the slot regions. Step 1 .4 comprises the impregnation of the insulation with resin. Step 1 .5 comprises removal of the spacers, washing the loop regions (removal of any resin) and insertion of wedges to maintain the spacing between the turns. Step 1 .6 comprises curing of the insulation and removal of the wedges.
Fig. 9 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention. This embodiment applies to the case where the conductors have to be insulated with separate turn insulation and VPI is not used (resin is contained in the tapes). Step 1 .1 comprises winding of the conductor, application of turn insulation, application of spacers between the turns within the loop regions and forming the coil. Step 1 .2 comprises the application of ground insulation within the slot regions. Step 1 .3 comprises the removal of turn insulation within the loop regions. Step 1 .5 comprises removal of the spacers and insertion of wedges to maintain the spacing between the turns. Step 1 .6 comprises curing of the insulation and removal of the wedges.
Fig. 10 shows sub-steps of step 1 in Fig.6 for one embodiment of the current invention. This embodiment applies to the case where the conductors have not to be insulated with separate turn insulation and VPI is not used (resin is contained in the tapes). Step 1 .1 comprises winding of the conductor, application of spacers between the turns within the loop regions and forming the coil. Step 1 .2 comprises the application of ground insulation within the slot regions. Step 1 .5 comprises removal of the spacers and insertion of wedges to maintain the spacing between the turns. Step 1 .6 comprises curing of the insulation and removal of the wedges.
Fig. 1 1 shows sub-steps of step 2 in Fig.6. Step 2.1 comprises the installation of the coil into the stator core. Step 2.2 comprises the restoration of the turn insulation within the loop regions. Step 2.3 comprises the completion of the ground insulation within the loop regions. The sub-steps of step 2 are differing only slightly according to the different embodiments of the current invention. In the case where the conductors have to be insulated with separate turn insulation step 2.2 means the application of turn insulation tape according to Fig.4. In the case where the wire insulation comprises the turn insulation step 2.2 means repairing the wire insulation (including turn insulation) where damaged during installation of the coil into the stator core.
Finally it has to be stated that steps 2.2 and 2.3 are performed using an insulation system which cures at room temperature.

Claims

Claims
1. Method of fabricating a dynamoelectric machine utilizing multi-turn coils comprising manufacturing of a multi-turn coil including turn and ground insulation (15) and installation of said coil into the stator core of said machine characterized in that the loop regions (10) of said coil have no ground insulation during installation and the ground insulation (15) at the loop regions (10) is completed after installation of the coil.
2. Method of fabricating a dynamoelectric machine utilizing multi-turn coils according to claim 1 characterized in that a separate turn insulation (14) is applied and VPI is used, comprising winding of a conductor, application of turn insulation, application of spacers (13) between the turns within the loop regions (10), forming the coil, application of ground insulation (15) within the slot regions (1 1 ), removal of turn insulation (14) within the loop regions (10), impregnation of insulation with resin, removal of the spacers (13), washing the loop regions (10), insertion of wedges, curing of insulation, removal of wedges, installation of the coil into the stator core, restoration of the turn insulation (14) within the loop regions (10) and completion of ground insulation (15) within the loop regions (10).
3. Method of fabricating a dynamoelectric machine utilizing multi-turn coils according to claim 1 characterized in that no separate turn insulation (14) is applied and VPI is used, comprising winding of a conductor, application of spacers (13) between the turns within the loop regions (10), forming the coil, application of ground insulation (15) within the slot regions (1 1 ), impregnation of insulation with resin, removal of the spacers (13), washing the loop regions (10), insertion of wedges, curing of insulation, removal of wedges, installation of the coil into the stator core, repair of wire insulation within the loop regions (10) if needed and completion of ground insulation (15) within the loop regions (10).
4. Method of fabricating a dynamoelectric machine utilizing multi-turn coils according to claim 1 characterized in that a separate turn insulation (14) is applied and insulation tapes containing resin are used, comprising winding of a conductor, application of turn insulation (14), application of spacers (13) between the turns within the loop regions (10), forming the coil, application of ground insulation (15) within the slot regions (1 1 ), removal of turn insulation (14) within the loop regions (10), removal of the spacers (13), insertion of wedges, curing of insulation, removal of wedges, installation of the coil into the stator core, restoration of the turn insulation (14) within the loop regions (10) and completion of ground insulation (15) within the loop regions (10).
5. Method of fabricating a dynamoelectric machine utilizing multi-turn coils according to claim 1 characterized in that no separate turn insulation (14) is applied and insulation tapes containing resin are used, comprising winding of a conductor, application of spacers (13) between the turns within the loop regions (10), forming the coil, application of ground insulation (15) within the slot regions (1 1 ), removal of the spacers (13), insertion of wedges, curing of insulation, removal of wedges, installation of the coil into the stator core, repair of wire insulation within the loop regions (10) if needed and completion of ground insulation (15) within the loop regions (10).
PCT/EP2015/059000 2015-04-27 2015-04-27 Method of making multi-turn coils Ceased WO2016173608A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2984122A CA2984122C (en) 2015-04-27 2015-04-27 Method of making multi-turn coils
US15/569,899 US10523076B2 (en) 2015-04-27 2015-04-27 Method of making multi-turn coils
PCT/EP2015/059000 WO2016173608A1 (en) 2015-04-27 2015-04-27 Method of making multi-turn coils

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Application Number Priority Date Filing Date Title
PCT/EP2015/059000 WO2016173608A1 (en) 2015-04-27 2015-04-27 Method of making multi-turn coils

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WO2016173608A1 true WO2016173608A1 (en) 2016-11-03

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Publication number Priority date Publication date Assignee Title
DE102017119248A1 (en) 2017-08-23 2019-02-28 Voith Patent Gmbh Method for producing insulated winding elements
WO2019038166A1 (en) 2017-08-23 2019-02-28 Voith Patent Gmbh METHOD FOR PRODUCING INSULATED WINDING ELEMENTS

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US10523076B2 (en) 2019-12-31
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CA2984122A1 (en) 2016-11-03

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