WO2019077261A1 - Machine électrique toroïdale polyphasée - Google Patents
Machine électrique toroïdale polyphasée Download PDFInfo
- Publication number
- WO2019077261A1 WO2019077261A1 PCT/FR2018/052572 FR2018052572W WO2019077261A1 WO 2019077261 A1 WO2019077261 A1 WO 2019077261A1 FR 2018052572 W FR2018052572 W FR 2018052572W WO 2019077261 A1 WO2019077261 A1 WO 2019077261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coils
- strip
- wire
- stator assembly
- stator
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/125—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets having an annular armature coil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- 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
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/022—Magnetic cores with salient poles
-
- 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
- H02K15/0431—Concentrated windings
-
- 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
- H02K3/28—Layout of windings or of connections between windings
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
Definitions
- the invention relates to the field of polyphase electrical machines and more particularly to an advantageous embodiment of machines called toroidal winding, or circumferential winding, that is to say machines in which the winding axes follow the direction circumferential stators of said machines.
- the invention also relates to a method of producing a toroidal type electrical machine, allowing significant gains in terms of number of parts and performance.
- the present invention aims to overcome the disadvantages of the state of the art by proposing a simplified embodiment and more economically viable.
- the invention aims to reduce the number of parts used to produce a toroidal electric machine.
- the invention provides an electric machine having a rotor comprising a set of permanent magnets and a stator comprising a stator strip of a soft ferromagnetic material, said strip carrying a coil body carrying a plurality of coils of wires so as to form a toroidal polyphase coiled stator assembly.
- the strip advantageously has a single discontinuity and periodically exhibits at least one partial cut between two consecutive wire coils in order to obtain a polygonal shape of said strip within said plurality of wire coils.
- the machine has: a rotor with two radial rows of permanent magnets located on either side, radially, of the coiled stator assembly,
- a rotor with a third row of magnets situated radially at the same level of the coiled stator assembly and above axially of said coiled stator assembly
- the invention relates to a three-phase machine.
- the set of wire coils is wound with a continuous wire to make a connection between said three phases, and the electrical assembly of the three phases is achieved by local cuts of the son.
- the polyphase coiled stator assembly is in a star or parallel arrangement with, for each phase, assemblies in series or parallel of several coils of wires.
- the invention also proposes a method of winding a stator assembly for an electric toroidal winding machine, comprising a sequence of steps that consist of:
- said machine is a three-phase machine and said linearly arranged coils are wound with a continuous wire and said continuous wire also carries the connection between said phases, and said continuous wire is then cut locally to achieve the electrical assembly of the three phases.
- the polyphase coiled stator assembly may be in a star or parallel arrangement with, for each phase, assemblies in series or parallel of several coils.
- FIGS. 1a, 1b and 1c respectively, an isolated view of a stator unwound from a machine according to the invention before insertion of the coil body, an isolated view of a linear matrix of strips and an isolated view a matrix of superimposed bands,
- FIGS. 2a, 2b and 2c isolated views of a cut of a stator strip unrolled from a machine according to the invention before insertion of the bobbin body
- FIGS. 3a and 3b are isolated views of an unwound coil body intended for a machine according to the invention and according to two different embodiments, - Figure 4 an isolated view of a coil body according to Figure 3a on which are wound electrical son,
- FIGS. 5a and 5b are isolated views of a coil body intended for a machine according to the invention, showing respectively an example of coil wire passage and flexible bridges of the coil body,
- FIG. 6 a view of a coil body according to the invention illustrating the winding of a particular machine
- FIGS. 7a and 7b insulated views of the respectively wound and unwinded coil body of FIG. 4, in which is inserted the unwrapped stator of FIG. 1 respectively after or before the winding of the body,
- FIGS. 8a to 8d isolated views of examples of closure of the stator assembly
- FIGS. 9a and 9b axial views of a machine according to the invention in two different embodiments
- FIGS. 10a, 10b and 10c are isolated sectional views of examples of machines according to the invention with different use of magnets
- FIGS. 11a, 11b, 11c, 11d and 1b are sectional views of examples of machines according to the invention with different use of magnets,
- FIGS. 12a, 12b and 12c views of a particular embodiment of the magnets of a machine according to the invention
- FIG. 13 an isolated view of a magnetized ring of a machine according to the invention according to a particular embodiment
- FIGS. 14a, 14b and 14c various views of an embodiment of an axial flow machine according to the invention
- FIG. 15 an exploded isolated view of an embodiment of a machine with two independent electrical networks
- FIG. 16 an alternative embodiment of a coil body according to the invention
- FIGS. 17a, 17b and 17c views of a first embodiment integrating ferromagnetic poles
- FIG 1a shows a strip (1) stator unwound from an electric machine according to the invention.
- This stator band (1) is generally in the form of a plate of soft ferromagnetic material, several of these strips being superposable in order to obtain a strip which forms the core of the stator.
- This stator band (1) comprises regularly spaced cuts (2) whose shape can be variable but allow the contact of the lateral flanks (3a, 3b), better visible in FIGS. 2a to 2c, during the winding of the stator band (1), while these flanks (3a, 3b) are disjoint in this unwound form.
- the shape of the cutoff (2) and the flanks (3a, 3b) is not limiting and FIGS.
- the angle formed by the cutoff (12) will preferably be close to 30 ° in order to allow contact of the flanks (3a, 3b).
- the angle formed by the cutoff (12) will preferably be close to 40 °.
- the stator strip (1) can be made from a linear continuous strip matrix (15) as shown in FIG. 1c, or from an array of superposed stripes (16) as shown in FIG. 1 b, without these examples being limiting in their possible achievements.
- FIG. 3a A second part of the object of the invention is appreciated in Figures 3a and 3b, showing a coil body (4) of an electric machine according to the invention and according to two different embodiments.
- This coil body (4) is in the form of a linear strip before mounting the stator and made of an electrically insulating material, preferably of the plastic type.
- the bobbin body (4) can optionally be loaded with ferromagnetic particles to improve the magnetic performance of the machine.
- the coil body (4) has a a multitude of reception zones (5), the number of which is preferably equal to the number of cuts (2) of the stator band (1) minus one unit.
- the coil body (4) also has a succession of pins
- the coil body (4) further has a longitudinal opening (9) therethrough.
- FIG. 3b A second example of a coil body (4) is given in FIG. 3b.
- This coil body (4) does not have a pin (6) but only IDC cavities
- FIG. 16 A third example of a coil body (4) is given in FIG. 16. This coil body (4) has forks (20) for welding the wires when this solution is preferred.
- Figure 4 shows the coil body (4) after winding a wire (8) conductor (typically copper, silver or aluminum). The winding method and the advantages of the coil body (4) are explained in FIGS. 5 and 6.
- FIG. 5a shows, for example, in an isolated view of a few reception zones (5) of the coil body (4), the theoretical path of a wire (8) around the pins (6) in the where the coil body (4) comprises such pins (6) in a clockwise (CW) or counterclockwise (CCW) direction relative to the longitudinal opening (9).
- the pins (6) serve to guide the wire (8) during the winding and ensure that it remains on the average fiber, that is to say in the plane cutting longitudinally the coil body (4) and passing through the IDC cavities (7) during winding.
- FIG. 5b illustrates the bridges (21) flexible between the receiving areas (5) of the coil body (4) and which ensure the continuous connection of the latter.
- These bridges (21) also give the degree of freedom to the body of coils (4) allowing it to deform during the shaping of the stator assembly (10).
- these bridges (21) are two in number between each receiving zone (5), and are situated on the lower part and the upper part of the body (5) on either side of the stator band (1) (not shown here) and symmetrically on the depth of the body (4).
- This embodiment of the bridges (21) is non-limiting and the shape, position and number of bridges (21) can be modified without departing from the scope of the invention.
- FIG. 6 shows that it is possible with the concept of the present invention to wind the entire coil body (4) with a single wire (8) in a single continuous operation.
- the three reel body strings (4) of this figure 6 represent one and the same reel body (4), but shown in three wire winding steps (8) for better understanding.
- a stator carrying 12 coils in an operation whose wiring is called "triangle-series-parallel", that is to say having 4 coils per phase and whose coils of a phase are in series one by one and in parallel two by two
- This winding "triangle-series-parallel" is given as an example and is in no way limiting. It is thus possible to achieve different wiring in accordance with the invention, although this wiring is preferably considered for its simplicity of implementation.
- the coil body (4) receives in its longitudinal opening (9) the superimposed unrolled stator strips (1) which are thus inserted into the coil body (4) in the direction given by the arrow thick in Figure 7a. It is also notable that it is possible, again according to the invention, to provide for the mounting of the stator strip (1) in the coil body (4) before the winding thereof, as illustrated in FIG. 7b.
- FIGS. 8a to 8d the joint is made by a weld (17)
- FIG. 8b the joint is made by the coil body (4)
- FIG. 8c the joint is made by an insert (18) at the body of coil (4)
- FIG. 8d the joint is formed by against-forms (19) at the level of the strip (1) of the stator.
- a dovetail principle can also be envisaged (not shown) at the stator strip (1).
- the joining and closing of the stator assembly can be achieved by overmoulding into an injectable material.
- Figures 9a and 9b show an electric machine according to the invention in two different embodiments, for example, once The stator strip (1) inserted into the coil body (4) and the stator assembly (10) wound so that the flanks (3a, 3b) are joined.
- the stator strip (1) has a polygonal shape within said plurality of wire coils.
- the machine according to the example of Figure 9a is a three-phase machine having 9 coils and two rotors (1 1a, 1 1b) formed by multipole magnet rings (13a, 13b) alternating polarities North and South - here 5 pairs of poles for each rotor- and ferromagnetic yokes (12a, 12b).
- the rotors (1 1 a, 1 1 b) are located respectively radially outside and inside, of the stator assembly (10), and are advantageously integral with each other.
- the machine comprises 12 coils and 4 pairs of poles per rotor (1 1 a, 1 1 b).
- the shape of the multipole magnet rings (13a, 13b) may be variable and in particular have radial extensions (14), as shown in FIGS. 10a to 10c, in order to increase the active surface area of the magnets (13a, 13b) opposite the wound wire (8).
- the bobbin body (4) is not illustrated to simplify understanding.
- the invention allows to use an inner magnet (13b) and outer (13a), as shown in Figure 1 1a, but also to use in addition an axial magnet (13c) located axially relative to the assembly stator (10), as shown in Figures 1 1 b, or to use a radial magnet and an axial magnet, as shown in Figure 1 1 c.
- the magnets (13a, 13b and 13c) are integral with each other. According to the invention, it is possible to use only one inner magnet (13b) as shown in FIG. 11d or a single external magnet (13a) as shown in FIG.
- the various magnetic rings used for a machine according to the invention can be rigid rings or be made in the form of a flexible strip (19), illustrated in FIG. 12a, cut to form a magnet (13d), and magnetized to make a magnetic strand illustrated in Figure 12b, then shaped and positioned inside the ferromagnetic yoke (12a) as shown in Figure 12c.
- the magnetization of the magnets of a machine according to the invention can be carried out radially unidirectionally as shown in Figures 9a, 9b and 9c or be performed in a sinusoidal evolution of the magnetization angle as presented in Figure 13 - Thick arrows showing the local magnetization direction in the magnet.
- FIGS 14a to 14c are illustrations of an embodiment of the invention of an axial flow machine.
- the stator strip (1) consists of a plurality of ferromagnetic sheets stacked according to the width of the strip (1) and the magnets (13f, 13g) are located, after assembly of the stator assembly (10), of part and of other of the latter, axially.
- FIG. 15 illustrates the concept of this particular embodiment with two different stator sets (10a, 10b) which are made separately in the same way as previously presented and then assembled together, for example, the techniques presented in FIGS. 8a to 8d.
- Figures 17a and 17b show the body of coils (4) respectively with and without the conductive son wound (8) for a machine stator having 6 pole pieces and 6 son coils (8).
- These bodies (4) have inserted pole pieces (23) whose geometry is given as an example in FIG. 17c.
- each pole piece is in the form of portions of stacked sheets. It can also be envisaged that these polar pieces are massive. In the spirit of the invention, these pole pieces (23) are inserted mechanically before or after the winding of son (8) in the coil body (4).
- FIG. 18a shows a second example where pole pieces (23) are reported in the coil body (4) for a machine having here 12 pole pieces (23) and 12 son coils (8).
- FIG. 18b is a longitudinal sectional view of FIG. 18a, in which the two breaks (2), in particular, are separated between the coils of wires (8) in order to allow the winding of the stator assembly to realize a rotating machine.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Windings For Motors And Generators (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201880067931.XA CN111316536A (zh) | 2017-10-17 | 2018-10-16 | 环形多相电机 |
| EP18803743.6A EP3698454A1 (fr) | 2017-10-17 | 2018-10-16 | Machine électrique toroïdale polyphasée |
| JP2020521571A JP2020537864A (ja) | 2017-10-17 | 2018-10-16 | トロイダル型多相電気機械 |
| US16/755,917 US11967870B2 (en) | 2017-10-17 | 2018-10-16 | Toroidal polyphase electric machine |
| KR1020207014021A KR20200073262A (ko) | 2017-10-17 | 2018-10-16 | 토로이드형 다상 전기 장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1759751A FR3072517B1 (fr) | 2017-10-17 | 2017-10-17 | Machine electrique toroidale polyphasee |
| FR1759751 | 2017-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019077261A1 true WO2019077261A1 (fr) | 2019-04-25 |
Family
ID=61521580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2018/052572 Ceased WO2019077261A1 (fr) | 2017-10-17 | 2018-10-16 | Machine électrique toroïdale polyphasée |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11967870B2 (fr) |
| EP (1) | EP3698454A1 (fr) |
| JP (1) | JP2020537864A (fr) |
| KR (1) | KR20200073262A (fr) |
| CN (1) | CN111316536A (fr) |
| FR (1) | FR3072517B1 (fr) |
| WO (1) | WO2019077261A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3100399B1 (fr) * | 2019-08-27 | 2021-09-24 | Moving Magnet Tech | Machine à bobinage toroïdal |
| CN115398777A (zh) * | 2020-05-08 | 2022-11-25 | 住友电气工业株式会社 | 铁芯片、定子铁芯、定子、旋转电机及铁芯片的制造方法 |
| GB202211025D0 (en) * | 2022-07-28 | 2022-09-14 | Saietta Group PLC | Method and apparatus for forming a coil pack |
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| EP1324472A2 (fr) | 2001-12-25 | 2003-07-02 | Jiangxi Grand Tech Motor Co., Ltd. | Moteur électrique à rotor intérieur et extérieur avec enroulement d'entrefer et bobinage en anneau |
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| WO2015092408A2 (fr) * | 2013-12-18 | 2015-06-25 | Gyo Gym Limited | Améliorations apportées ou se rapportant à la production de votre propre énergie |
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| JP2017070111A (ja) * | 2015-09-30 | 2017-04-06 | 日本電産サンキョー株式会社 | ステータ、モータおよびポンプ装置 |
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| US8994244B2 (en) * | 2012-08-01 | 2015-03-31 | Nidec Motor Corporation | Motor stator with reduced coil configuration |
| CN106712329B (zh) * | 2016-12-15 | 2020-10-13 | 美的威灵电机技术(上海)有限公司 | 电机和具有其的水泵 |
-
2017
- 2017-10-17 FR FR1759751A patent/FR3072517B1/fr not_active Expired - Fee Related
-
2018
- 2018-10-16 EP EP18803743.6A patent/EP3698454A1/fr not_active Withdrawn
- 2018-10-16 CN CN201880067931.XA patent/CN111316536A/zh active Pending
- 2018-10-16 US US16/755,917 patent/US11967870B2/en active Active
- 2018-10-16 JP JP2020521571A patent/JP2020537864A/ja active Pending
- 2018-10-16 WO PCT/FR2018/052572 patent/WO2019077261A1/fr not_active Ceased
- 2018-10-16 KR KR1020207014021A patent/KR20200073262A/ko not_active Ceased
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20200073262A (ko) | 2020-06-23 |
| US11967870B2 (en) | 2024-04-23 |
| JP2020537864A (ja) | 2020-12-24 |
| CN111316536A (zh) | 2020-06-19 |
| EP3698454A1 (fr) | 2020-08-26 |
| FR3072517A1 (fr) | 2019-04-19 |
| FR3072517B1 (fr) | 2020-12-18 |
| US20200295641A1 (en) | 2020-09-17 |
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