CA2187096C - Three-phase electric machine with interlaced conductor layers - Google Patents
Three-phase electric machine with interlaced conductor layers Download PDFInfo
- Publication number
- CA2187096C CA2187096C CA002187096A CA2187096A CA2187096C CA 2187096 C CA2187096 C CA 2187096C CA 002187096 A CA002187096 A CA 002187096A CA 2187096 A CA2187096 A CA 2187096A CA 2187096 C CA2187096 C CA 2187096C
- Authority
- CA
- Canada
- Prior art keywords
- conductor
- phase
- layer
- layers
- winding
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/26—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of printed conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings 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)
- Coils Of Transformers For General Uses (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
In prior art three-phase electric machines with a layered winding, the conductor elements either make non-optimum use of the space in the slot or the conductors for each phase are in the form of large elements designed to be fitted into each other and whose manufacture is complicated and costly. The invention calls for the conductors (5-7) for each phase in the three-phase conductor layer (11) to be identical in construction and for the construction to be repeated every four pole pitches. While the phase conductors (5-7) occupy the full height of the layer within the magnetic field, two phase conductors (5-7) superposed one above the other in the slot share the space at the coil ends (9). At the slot exit, the conductor cross-section increases and only later, at the coil end (9), halved from only one side at each passage through the coil end. In order to alternate the layer halves, contact surfaces are available which are large in comparison to the conductor cross-section and the two winding ends (9) are uniformly utilized by virtue of the plaiting of the layers. The production of three-phase conductor layers by laying alternate conducting and insulating layers is particularly suitable for small electromagnetic machines, giving uniform space utilization and hence high effectiveness and a high power density at low cost, and requiring only a few operations.
Description
> ,-Pi~IN THIS :~:W:;
EXT TR~hid3r~ ~ 1 ~ ~ ~ 9 b TITLE
$ACRCiROUND OF THE INVENTION
1. Fiend of the Invention The invention concerns a three-phase electric machine with an interlaced winding as well as a production process.
EXT TR~hid3r~ ~ 1 ~ ~ ~ 9 b TITLE
$ACRCiROUND OF THE INVENTION
1. Fiend of the Invention The invention concerns a three-phase electric machine with an interlaced winding as well as a production process.
2.
From GB 13 29 205 conductor lanes for linear machines are known which are manufactured as cast parts in a mould. Because the conductor parts are individually manufactured and then assembled, expensive moulds for prefabrication with low tolerances are required. Further, the height of said conductor parts decreases sharply at the end of the groove, thereby resulting in a small critical cross section. The conductor parts of all phases are stacked flat in the winding overhangs, thereby creating large voids and, in case of three-phase conductor layers, three partial layers in said winding overhangs.
The invention is, therefore, based on the objective to advance the development of a three-phase electric machine with a layered winding in which the conductor lanes of said winding are in part arranged in a soft magnetic body in such a manner that uniform utilization of space is achieved and manufacture is simplified.
BUMLLARY OF HE INVENTTnN
In accordance with the invention, the uniform utilization of space in a three-phase electric machine with a layered winding, the conductor lanes (5-7) of said winding being arranged in a soft magnetic body and said conductor lanes of different phases being arranged within a conductor layer (11) is achieved by arranging partial conductor sections (14-17) of a conductor lane (6) which are sequentially placed in direction of the progression within a winding overhang (9) in layer halves (12, 13) of the conductor layer (1l) at different distances to the air gap and where all conductor lanes (5-7) are of identical structural shape, as well as by manufacturing all three conductor lanes of a three-phase winding layer concurrently in one process by alternately applying layers of insulating material and conductor material.
All conductor lanes of a three-phase conductor layer are of identical structural shape, with the configuration of the conductor lanes repeating every four pole pitches and each conductor lane in this period possessing in both winding overhangs two partial conductor sections in two different halves of the layer. In the magnetic field, a conductor lane occupies always the entire height of the layer, thereby avoiding transitions between two halves of the layer within the pass-through through a winding overhang. However, the three-phase conductor layer consists in the winding overhangs of only two partial layers. Additionally, the winding overhangs are being completely and uniformly utilized, because in each half of the winding overhang partial sections of the conductor lanes are arranged tangentially in sequence and are separated only by thin insulating layers. A narrowing of the cross section at the transition of the winding overhang at the groove is avoided by initially enlarging the width of the conductor parallel to the groove width when said conductor is exiting the groove and by bisecting the conductor height farther within the winding overhang.
This optimal space utilization is possible for three-phase conductor lanes only then, if the three conductor lanes are interlaced, i.e. the conductor lanes of a layer can not be manufactured independently of each other but only in a common process. Besides welding of prefabricated parts in the groove area, processes in which conductor layers and insulation layers are alternately produced are suitable. Thick layer and thin layer techniques enable the fully automated manufacture of 2187~~~
extremely flat mini and micro motors.
The drawings show advantageous embodiments of the invention.
BRIEF DESCRIPTT_ON OF TH8 DRAWINGS
Figure 1 shows the masks for the manufacture of the three-phase conductor layers.
Figure 2 shows the spatial construction of the conductor layers from Figure 1.
Figure 3 shows the sequence of three sections of a conductor lane from Figure 2, placed on top of each other.
DETAILED DESCRIPTION OF TH PREFERRED EMBODIME~1'T
Figure 1 shows on the left side the two conductor masks (1, 2) and on the right, somewhat smaller, the insulation masks (3, 4) for a 24-pole, three-phase conductor layer. Material is applied on a flat surface, filling existing indentations in the process. After exposure with the respective mask (1 - 4), the non-hatched surfaces are removed again. The hatched surfaces of the conductor masks (1 and 2), therefore, represent parts of the three conductor lanes (5 - 7). In each half of each layer, only two different structural shapes occur which can be assigned to the respective phases on the basis of the different hatching. In the insulation mask (3) for the center of the layer insulation material remains only in the winding overhangs (9), except for the three partial sections (8) in which a change of the layer occurs. on the other hand, the lower insulation mask (4) separates two identical, three-phase conductor layers and therefore, insulation material remains on the surfaces, except in the transition areas (8). The openings (10) within the layers are intended for a magnetic conductive material - e.g. iron powder or ferrite.
Figure 2 shows the construction of the three-phase interlaced conductor layer (11) from Figure 1 in a spatial depiction of a section of the circumference in which the differently hatched conductor lanes (5-7) of the two halves of the layer (12, 13) are shown as being assembled from flat cuts of sheet metal. On the right side of the illustration, the two halves of the layer have been pulled apart parallel to the depth of the groove in order to better clarify their shape. Each of the three conductor lanes (5-7) consists of four differently arranged partial conductor sections (14-17) which together bridge four pole pitches and in which each of the small groove bar sections (16, 17) for the groove pass-through without change of the halves of the layers, as well as the large conductor sections (14, 15) are identical. Since the three conductor lanes are identical, the entire three-phase conductor layer (11) consists of only two different partial conductor sections.
In Figure 3 the arrangement of the conductor lane (6) from Figure 2 is shown in all layers (21-23) of a winding which consists of three layers. Here that section of the circumference was chosen in which the current supply and current derivation (18, 19) as well as the change to another layer (20) occur.
Besides the two structural shapes (14, 15) and (16, 17) respectively, the winding contains only two additional shapes, (18 and 19). In the upper layer (21), the conductor lane progresses, beginning from the current supply (18), clockwise through the entire circumference of the machine minus one pole pitch. At the end, the last partial conductor section in the lower half of the layer is connected with the first partial conductor section in the upper half of the middle layer (22).
After another complete progression through the circumference, the conductor lane changes in the transition groove to the lower layer (23), from which, after the third progression through the circumference, the current derivation (19) occurs again in the transition groove. The three transition grooves of the machine should be executed in a position that is lower than the other grooves by one half the thickness of a conductor layer in order to avoid a narrowing of the conductor cross section in the last partial conductor section (19).
From GB 13 29 205 conductor lanes for linear machines are known which are manufactured as cast parts in a mould. Because the conductor parts are individually manufactured and then assembled, expensive moulds for prefabrication with low tolerances are required. Further, the height of said conductor parts decreases sharply at the end of the groove, thereby resulting in a small critical cross section. The conductor parts of all phases are stacked flat in the winding overhangs, thereby creating large voids and, in case of three-phase conductor layers, three partial layers in said winding overhangs.
The invention is, therefore, based on the objective to advance the development of a three-phase electric machine with a layered winding in which the conductor lanes of said winding are in part arranged in a soft magnetic body in such a manner that uniform utilization of space is achieved and manufacture is simplified.
BUMLLARY OF HE INVENTTnN
In accordance with the invention, the uniform utilization of space in a three-phase electric machine with a layered winding, the conductor lanes (5-7) of said winding being arranged in a soft magnetic body and said conductor lanes of different phases being arranged within a conductor layer (11) is achieved by arranging partial conductor sections (14-17) of a conductor lane (6) which are sequentially placed in direction of the progression within a winding overhang (9) in layer halves (12, 13) of the conductor layer (1l) at different distances to the air gap and where all conductor lanes (5-7) are of identical structural shape, as well as by manufacturing all three conductor lanes of a three-phase winding layer concurrently in one process by alternately applying layers of insulating material and conductor material.
All conductor lanes of a three-phase conductor layer are of identical structural shape, with the configuration of the conductor lanes repeating every four pole pitches and each conductor lane in this period possessing in both winding overhangs two partial conductor sections in two different halves of the layer. In the magnetic field, a conductor lane occupies always the entire height of the layer, thereby avoiding transitions between two halves of the layer within the pass-through through a winding overhang. However, the three-phase conductor layer consists in the winding overhangs of only two partial layers. Additionally, the winding overhangs are being completely and uniformly utilized, because in each half of the winding overhang partial sections of the conductor lanes are arranged tangentially in sequence and are separated only by thin insulating layers. A narrowing of the cross section at the transition of the winding overhang at the groove is avoided by initially enlarging the width of the conductor parallel to the groove width when said conductor is exiting the groove and by bisecting the conductor height farther within the winding overhang.
This optimal space utilization is possible for three-phase conductor lanes only then, if the three conductor lanes are interlaced, i.e. the conductor lanes of a layer can not be manufactured independently of each other but only in a common process. Besides welding of prefabricated parts in the groove area, processes in which conductor layers and insulation layers are alternately produced are suitable. Thick layer and thin layer techniques enable the fully automated manufacture of 2187~~~
extremely flat mini and micro motors.
The drawings show advantageous embodiments of the invention.
BRIEF DESCRIPTT_ON OF TH8 DRAWINGS
Figure 1 shows the masks for the manufacture of the three-phase conductor layers.
Figure 2 shows the spatial construction of the conductor layers from Figure 1.
Figure 3 shows the sequence of three sections of a conductor lane from Figure 2, placed on top of each other.
DETAILED DESCRIPTION OF TH PREFERRED EMBODIME~1'T
Figure 1 shows on the left side the two conductor masks (1, 2) and on the right, somewhat smaller, the insulation masks (3, 4) for a 24-pole, three-phase conductor layer. Material is applied on a flat surface, filling existing indentations in the process. After exposure with the respective mask (1 - 4), the non-hatched surfaces are removed again. The hatched surfaces of the conductor masks (1 and 2), therefore, represent parts of the three conductor lanes (5 - 7). In each half of each layer, only two different structural shapes occur which can be assigned to the respective phases on the basis of the different hatching. In the insulation mask (3) for the center of the layer insulation material remains only in the winding overhangs (9), except for the three partial sections (8) in which a change of the layer occurs. on the other hand, the lower insulation mask (4) separates two identical, three-phase conductor layers and therefore, insulation material remains on the surfaces, except in the transition areas (8). The openings (10) within the layers are intended for a magnetic conductive material - e.g. iron powder or ferrite.
Figure 2 shows the construction of the three-phase interlaced conductor layer (11) from Figure 1 in a spatial depiction of a section of the circumference in which the differently hatched conductor lanes (5-7) of the two halves of the layer (12, 13) are shown as being assembled from flat cuts of sheet metal. On the right side of the illustration, the two halves of the layer have been pulled apart parallel to the depth of the groove in order to better clarify their shape. Each of the three conductor lanes (5-7) consists of four differently arranged partial conductor sections (14-17) which together bridge four pole pitches and in which each of the small groove bar sections (16, 17) for the groove pass-through without change of the halves of the layers, as well as the large conductor sections (14, 15) are identical. Since the three conductor lanes are identical, the entire three-phase conductor layer (11) consists of only two different partial conductor sections.
In Figure 3 the arrangement of the conductor lane (6) from Figure 2 is shown in all layers (21-23) of a winding which consists of three layers. Here that section of the circumference was chosen in which the current supply and current derivation (18, 19) as well as the change to another layer (20) occur.
Besides the two structural shapes (14, 15) and (16, 17) respectively, the winding contains only two additional shapes, (18 and 19). In the upper layer (21), the conductor lane progresses, beginning from the current supply (18), clockwise through the entire circumference of the machine minus one pole pitch. At the end, the last partial conductor section in the lower half of the layer is connected with the first partial conductor section in the upper half of the middle layer (22).
After another complete progression through the circumference, the conductor lane changes in the transition groove to the lower layer (23), from which, after the third progression through the circumference, the current derivation (19) occurs again in the transition groove. The three transition grooves of the machine should be executed in a position that is lower than the other grooves by one half the thickness of a conductor layer in order to avoid a narrowing of the conductor cross section in the last partial conductor section (19).
Claims (5)
1. ~A three-phase electric machine with a layered winding, the conductor lanes (5-7) of said winding being partially arranged in a soft magnetic body, said conductor lanes being of different phases and being arranged within a conductor layer (11), wherein all conductor lanes (5-7) of a three-phase conductor layer (11) are of identical design and wherein partial conductor sections (14-17) of a conductor lane (6) which are placed sequentially in direction of the progression within the winding overhang (9) are arranged in halves of layers (12, 13) of the conductor layer (11) at different distances to the air gap.
2. ~A three-phase electric machine in accordance with claim 1, wherein the conductor height of the conductor lanes (5-7) in the magnetic field of the height of the layer and in the partial areas arranged parallel to the groove width corresponds to one half the height of the layer, and wherein the change of the conductor height occurs at a distance in front of the face of the soft magnetic body that corresponds to approximately half the width of the groove.
3. ~A multi-phase electric machine in accordance with claim 1, wherein the connection (20) of partial conductor sections (14-17) of a conductor lane (6) from three-phase conductor layers (21-23) which are stacked parallel to the groove depth occurs at locations of the conductor which lie in the magnetic field.
4. ~A process for the manufacture of a three-phase electric machine with a layered winding, the conductor lanes (5-7) of said winding being arranged in a soft magnetic body, said conductor lanes being of different phases and being arranged in one conductor layer (11), wherein all three conductor lanes of a three-phase winding layer are manufactured concurrently in one process by alternating application of layers of insulating material and conductor material.
5. ~A process for the manufacture of a three-phase electric machine in accordance with claim 4, wherein for the manufacture of a three-phase conductor layer only four masks, two each for the insulation layers and the conductor layers, are successively employed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19944411750 DE4411750C2 (en) | 1994-04-06 | 1994-04-06 | Three-phase electrical machine with interwoven conductor layers |
| DEP4411750.7 | 1994-04-06 | ||
| PCT/DE1995/000457 WO1995028027A1 (en) | 1994-04-06 | 1995-04-05 | Three-phase electric machine with plaited conductor layers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2187096A1 CA2187096A1 (en) | 1995-10-19 |
| CA2187096C true CA2187096C (en) | 2004-06-29 |
Family
ID=6514686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002187096A Expired - Fee Related CA2187096C (en) | 1994-04-06 | 1995-04-05 | Three-phase electric machine with interlaced conductor layers |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0754362B1 (en) |
| JP (1) | JPH10501956A (en) |
| CN (1) | CN1145144A (en) |
| CA (1) | CA2187096C (en) |
| DE (1) | DE4411750C2 (en) |
| WO (1) | WO1995028027A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10476323B2 (en) | 2015-08-11 | 2019-11-12 | Genesis Robotics & Motion Technologies Canada, Ulc | Electric machine |
| US11043885B2 (en) | 2016-07-15 | 2021-06-22 | Genesis Robotics And Motion Technologies Canada, Ulc | Rotary actuator |
| US11139707B2 (en) | 2015-08-11 | 2021-10-05 | Genesis Robotics And Motion Technologies Canada, Ulc | Axial gap electric machine with permanent magnets arranged between posts |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011109129A1 (en) * | 2011-07-14 | 2013-01-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Electric energy converter and method for its production |
| CN106270164A (en) * | 2015-05-26 | 2017-01-04 | 苏州工业园区金鑫模具制造有限公司 | Automated mould quick-changing mechanism |
| CN105071573B (en) * | 2015-07-16 | 2017-05-31 | 擎声自动化科技（上海）有限公司 | A kind of stator structure with printed circuit board (PCB) winding |
| EP4071776A1 (en) * | 2021-04-08 | 2022-10-12 | Siemens Aktiengesellschaft | Printing screen and method for providing a printing screen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1180051B (en) * | 1957-11-13 | 1964-10-22 | S E A Soc D Electronique Et D | Asynchronous motor |
| FR1203503A (en) * | 1957-11-13 | 1960-01-19 | Electronique & Automatisme Sa | Advanced rotating electrical machines |
| GB1329205A (en) * | 1971-04-08 | 1973-09-05 | Morris Ltd Herbert | Linear induction motors |
| NL163075C (en) * | 1976-07-12 | 1980-07-15 | Gils Adrianus Van | LAMINATED WINDING FOR ELECTRIC MACHINES. |
| EP0091123B1 (en) * | 1982-04-05 | 1986-09-03 | Nippondenso Co., Ltd. | Three-phase flat coils |
| US4645961A (en) * | 1983-04-05 | 1987-02-24 | The Charles Stark Draper Laboratory, Inc. | Dynamoelectric machine having a large magnetic gap and flexible printed circuit phase winding |
| JPS61132053A (en) * | 1984-11-30 | 1986-06-19 | Fanuc Ltd | Disc type stator of ac motor and manufacture thereof |
| DE4125044A1 (en) * | 1991-07-29 | 1993-02-04 | Wolfgang Hill | ELECTRIC MOTOR DESIGNED AS A DISC RUNNER WITH RADIAL AND RADIAL PACKAGE ARRANGED TO THE ROTATIONAL AXIS |
| DE9305152U1 (en) * | 1993-04-03 | 1993-06-03 | Knoerzer, Karl-Heinz, 7818 Vogtsburg, De | |
| DE4321236C1 (en) * | 1993-06-25 | 1994-08-25 | Wolfgang Hill | Multiphase electrical machine having a winding made of flat moulded conductors |
-
1994
- 1994-04-06 DE DE19944411750 patent/DE4411750C2/en not_active Expired - Fee Related
-
1995
- 1995-04-05 CN CN 95192448 patent/CN1145144A/en active Pending
- 1995-04-05 CA CA002187096A patent/CA2187096C/en not_active Expired - Fee Related
- 1995-04-05 JP JP7526010A patent/JPH10501956A/en active Pending
- 1995-04-05 EP EP95915129A patent/EP0754362B1/en not_active Expired - Lifetime
- 1995-04-05 WO PCT/DE1995/000457 patent/WO1995028027A1/en active IP Right Grant
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10476323B2 (en) | 2015-08-11 | 2019-11-12 | Genesis Robotics & Motion Technologies Canada, Ulc | Electric machine |
| US11043862B2 (en) | 2015-08-11 | 2021-06-22 | Genesis Robotics And Motion Technologies Canada, Ulc | Electric machine |
| US11139707B2 (en) | 2015-08-11 | 2021-10-05 | Genesis Robotics And Motion Technologies Canada, Ulc | Axial gap electric machine with permanent magnets arranged between posts |
| US11043885B2 (en) | 2016-07-15 | 2021-06-22 | Genesis Robotics And Motion Technologies Canada, Ulc | Rotary actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995028027A1 (en) | 1995-10-19 |
| DE4411750A1 (en) | 1995-10-12 |
| CA2187096A1 (en) | 1995-10-19 |
| CN1145144A (en) | 1997-03-12 |
| JPH10501956A (en) | 1998-02-17 |
| EP0754362A1 (en) | 1997-01-22 |
| DE4411750C2 (en) | 1997-06-05 |
| EP0754362B1 (en) | 1999-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |