WO2014128410A1 - Pièce mobile porte-aimants pour machine synchrone à aimants permanents - Google Patents
Pièce mobile porte-aimants pour machine synchrone à aimants permanents Download PDFInfo
- Publication number
- WO2014128410A1 WO2014128410A1 PCT/FR2014/050352 FR2014050352W WO2014128410A1 WO 2014128410 A1 WO2014128410 A1 WO 2014128410A1 FR 2014050352 W FR2014050352 W FR 2014050352W WO 2014128410 A1 WO2014128410 A1 WO 2014128410A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnets
- frame
- rows
- permanent magnets
- fastening strip
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- 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
- H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- 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
Definitions
- the present invention relates to the general technical field of motors or machines comprising permanent magnets and intended to generate an electric current.
- the present invention relates in particular to a moving magnet-holder part for a permanent-magnet synchronous machine, for example a machine of the motor or generator type, or any other rotating or non-rotating permanent-magnet electrotechnical machine.
- a preferred application of the invention relates more specifically to a traction motor rotor, for example a rail traction motor.
- Another application concerns for example various types of road vehicles.
- Synchronous machines with permanent magnets are composed of a moving part comprising a series of permanent magnets of alternating polarity and a fixed part called stator comprising a set of induction coils.
- the movable magnet holder can move linearly relative to the stator or rotate relative thereto. In the latter case, it is called rotor.
- these moving parts comprise successive rows of permanent magnets arranged vis-à-vis the stator windings. These rows, parallel to each other, are typically oriented perpendicular to the movement (that is to say in the axial direction in the case of a circular motion).
- the magnets are of the same polarity within the same row, but are of alternating polarity from one row to the other. It is thus also conceivable to achieve alternations of polarities with magnets of the same polarity arranged on two or three successive rows.
- the moving parts comprise a metal frame on which the magnets are fixed by gluing.
- the glue used must have characteristics compatible with the significant forces experienced by the magnets and whatever the operating temperature.
- these magnets are subjected to multiple forces that exert themselves in various directions. This is for example in the case of a rotating rotor: axial forces resulting from magnetic attractions and repulsions between the magnets, radial forces related to the looping of the magnetic field of the stator, centrifugal forces due to the rotation more or less rapid rotor and tangential shear forces due to torque.
- the glues used for fixing the magnets on the moving part of these machines must therefore be able to withstand such temperatures, while ensuring a good resistance of the magnets despite the significant constraints that are exerted thereon. Such high temperature withstand performance is difficult to obtain for an adhesive.
- the glues used are rigid glues which do not generally have sufficient elasticity to be compatible with this differential expansion.
- the glue film In case of deformation of the moving part caused by such differences in expansion or by external constraints or in the event of thermal runaway, for example due to converter malfunction, the glue film sometimes breaks between the frame. and magnets that can cause all or some of the magnets to slip on the stator. Such a rupture results in a sudden loss of performance of the synchronous machine, or even a complete block thereof.
- the object of the invention is to provide a moving part for synchronous machine does not have the aforementioned drawbacks and which comprises a mechanical fastening device of permanent magnets reliable and not affecting the performance of the machine.
- Another object of the invention is to complete the bonding of permanent magnets by ensuring perfect attachment of these magnets regardless of the operating temperature of the machine.
- Another object of the invention is to provide a synchronous machine moving part whose magnets are arranged in rows perpendicular to the movement, but which, thanks to the particular shape of the magnets and the mechanical fastening device of these magnets, allows a damping torque oscillations, comparable to that obtained with a propeller arrangement, while maintaining a better performance.
- the moving part according to the invention since its magnets are placed in rows perpendicular to the movement, the moving part according to the invention does not have the manufacturing difficulties of the parts of the prior art helically arranged. On the contrary, the invention teaches a method of laying and fixing permanent magnets on the frame of the moving part, particularly practical and advantageous.
- magnet in the broad sense, designating on the one hand elements made with conventional magnetic materials and on the other hand elements made of magnetizable materials.
- magnetizable materials are for example made with ferrite-based materials or alloys of the genus SmCo, AINiCo or NdFeB.
- frame it should be understood inter alia, a support structure provided with a cylinder head.
- a moving magnet-holder part for permanent-magnet synchronous machine designed to move in front of a fixed stator comprising a set of induction coils.
- This movable piece comprises a metal frame and a series of permanent magnets secured to said frame, these magnets being arranged in rows parallel to each other and perpendicular to the movement of the moving part (that is to say arranged in an axial direction in the case of a circular movement), these magnets being of the same polarity within the same row.
- This mobile part also comprises at least one non-magnetic fastening strip placed longitudinally between two successive rows of permanent magnets and mechanically fixed to the frame.
- . extends over substantially the entire length of these two rows and contributes to blocking all the magnets of these two rows,. has a rounded convex side support base, which ensures the vertical locking of the magnets of these two rows, and an upper longitudinal extension which serves as a spacer between these two rows and ensures the lateral locking of the magnets of these two rows on the side of the fixing strip,
- each magnet of these two rows comprises, at its edge adjacent to the fastening strip, a concave rounded portion of height at least equal to half the total height of the magnet and of complementary shape to that the corresponding convex rounded flank of the support base of the fastening strip, in which the support base of the fastening strip is at least partially engaged.
- the movable magnet holder comprises a fixing strip between each row of permanent magnets.
- the fixing strip is fixed to the frame by screwing, by means of screws which pass through holes in the frame and are engaged in tapped holes of the fastening strip.
- the width of the upper longitudinal extension of the fastening strip is smaller than the diameter of these threaded holes in the fastening strip.
- said threaded holes are made in the base of support of the fastening strip, the upper longitudinal extension of the fastening strip being interrupted at these threaded holes.
- the convex rounded flanks of the support base of the fastening strip are involute in a circle or in an arc of a circle.
- the movable magnet holder is provided to move linearly or rotationally, in a machine type motor or generator.
- the movable magnet-holding part is a traction motor rotor.
- the permanent magnets are further fixed by gluing on the frame.
- the permanent magnets and at least a portion of the frame are coated with a resin for support, holding and protection, which improves the maintenance of said magnets .
- the fixing strip according to the invention advantageously makes it possible to mechanically immobilize the permanent magnets in all directions, possibly with the exception of the longitudinal blocking which can be ensured by the shoulders of the frame.
- the fastening strip may further comprise at at least one of its ends an extension serving as a stop for the last magnet of at least one of the two rows between which the fastening strip is placed. this extension thus ensuring the longitudinal locking of the magnets of this row.
- the ruler thus completes the bonding and guarantees a perfect fixation of the magnets even at high temperatures.
- the glue used can be chosen more flexible and more elastic, because it is only used to make a mattress between the magnets and the frame to ensure a homogeneous support, and to ensure the temporary retention of magnets until the implementation in place of fixing strips.
- the particular shape of the fastening strip and more specifically the rounded rounded shape of the flanks of its bearing base, as well as that complementary to the adjacent edge of the magnets make it possible to obtain a reduction then a gradual increase of the magnetic fields during displacement of the moving part in front of the stator and thus a softening of the torque ripple induced by the passage of one polarity to another.
- the magnet support part according to the invention presents in in addition to the advantage of including fixing means that do not alter or extremely weakly the magnetic field lines of a synchronous machine of the motor or generator type.
- the width of the strip is very important at its central portion, which is intended to be interposed between two magnets, and in which are housed the holding screws and the springs washer. This width is almost equivalent to half that of a magnet.
- the magnets are distant from each other, and the total area that can be devoted to the magnetic elements is greatly reduced. The magnetic flux decreases accordingly, which causes a decrease in the performance of the machine.
- this front strip has in the upper part of its side edges, inclined bearing surfaces that press against the upper part of the magnets which is beveled in a complementary manner, to ensure the vertical blocking of these magnets.
- the invention also proposes a particularly advantageous method of attaching magnets to the frame of a moving magnet-holder part for a permanent-magnet synchronous machine, designed to move in front of a fixed winding stator.
- magnetizable elements in the case where magnetizable elements are used, magnetize said magnetizable elements so that they constitute permanent magnets.
- the method according to the invention consists in fixing the elements on the frame, also by gluing in advance of the fixing operation by strips.
- the method according to the invention consists in screwing the strips directly on the frame.
- the invention also teaches a synchronous machine with permanent magnets characterized in that it comprises a moving magnet-holder part as described above.
- Figures 1 and 2 are side views, respectively in perspective and plane, of a synchronous machine with permanent magnets consisting of an outer stator and an inner rotor according to a first variant of the invention
- FIG. 3 is a side perspective view of the rotor of the synchronous machine of Figure 1, a fixing strip according to the invention has been shown in the dissociated state;
- Figure 4 is a planar side view of the rotor of Figure 1;
- Figure 5 is a perspective side view of an outer rotor according to another embodiment of the invention, a fixing strip has been shown in the dissociated state;
- Figure 6 is a cross-sectional view of the lower portion of the outer rotor of Figure 5;
- Figure 7 is an enlargement of the detail circled in Figure 6; .
- Figure 8 is a perspective view of the rotor of Figure 5 which is not shown the frame;
- Figure 9 is an enlargement of the left detail circled in Figure 6 in which the screws are not shown;
- Figure 10 is an enlargement of the right-hand detail circled in Figure 8.
- Figures 1 1 to 15 are views, respectively in perspective, in cross-section, in longitudinal section, plane side and planar from above, an example of fastening strip according to the invention
- Figure 16 is a cross-sectional view of the upper part of the rotor of Figure 5, section through the screws of the fasteners;
- FIG. 17 is a graph showing the induction produced in the air gap by the magnets, with in broken lines the case of a conventional rotor without a fixing strip, in continuous line the case of a rotor with rounded-edge strips according to the invention and dashed the case of a rotor with sloping flanks;
- Figure 18 is a perspective view of another example of fastening strip according to the invention.
- Figures 19 is a top view in perspective of the fastening strip of Figure 18 placed between two rows of magnets.
- FIGS. 1 to 4 show a first example of a synchronous machine 1 with permanent magnets according to the invention.
- This synchronous machine 1 conventionally comprises a fixed part called stator 2 and a moving part 3.
- the movable part 3 represented is a rotor 4 which moves by turning relative to stator 2.
- the stator 2 shown is an external stator which comprises a peripheral frame 5 in a box, for example substantially parallelepiped, which encloses a hollow central chamber 6 of cylindrical shape, intended to house the rotor 4.
- the central chamber 6 cylindrical is open on each of its circular faces 7 and thus delimits an interior through volume for the reception of the rotor 4.
- the stator 2 also comprises a series of induction coils 8, also called coils, arranged all around the central chamber 6 and in the immediate vicinity thereof appropriately to achieve the desired induction phenomenon.
- the movable part 3 which, in the variant shown in Figures 1 to 4, is an inner rotor 4, that is to say placed inside the stator 2.
- the rotor 4 comprises a frame 9, preferably metallic, of cylindrical shape and of diameter slightly smaller than that of the central cylindrical chamber 6 of the stator 2.
- magnets 10 which are fixed on the outer face 1 1 of the longitudinal wall 12 of its cylindrical frame 9.
- These magnets 10 are preferably flat and of parallelepipedal general shape with a low height and substantially rectangular or square bases.
- the magnetic poles of these magnets 10 are located at their bases, one being of North polarity and the other South.
- the permanent magnets 10 are arranged in rows 13, parallel to each other and oriented in the axial direction of the cylinder.
- All the permanent magnets 10 of the same row 13 are of the same polarity, that is to say that they are arranged so as to present the base of the same pole (North or South) of the same side. They have for example all their base of North polarity directed towards the longitudinal wall 12 of the frame 9 and their base of South polarity directed towards the outside of the rotor 4, thus forming a row called "South row” 14, or conversely their base of South polarity directed towards the frame 9 and their base of North polarity directed towards the outside of the rotor 4, thus forming a row called "North row" 15.
- the magnets 10 tend to repel each other within the same row 13, but to attract from one row to the other.
- several successive rows 13, for example two or three, comprise magnets 10 of the same polarity.
- the permanent magnets 10 of the rotor 4 are found in the vicinity and vis-à-vis the induction coils 8 of the stator 2 and can cooperate with them.
- the passage of an electric current in the induction coils 8 of the stator 2 causes a rotational movement of the rotor 4 in the case of a synchronous machine 1 used as a motor, and the rotation of the rotor 4 causes the appearance an alternating current in the induction coils 8 of the stator in the case of a synchronous machine 1 used as a generator.
- synchronous machines 1 comprising an inner stator 2 and an outer rotor 4.
- the stator 2 is of smaller diameter than the rotor 4 and is intended to be placed inside the latter.
- the induction coils of the stator are located on its periphery towards the outer rotor.
- FIGS. 5 to 10 An example of an outer rotor 4 has been shown in FIGS. 5 to 10. It comprises a frame 9, preferably metallic, of cylindrical shape which delimits in its hollow interior volume a reception space 16 for the stator 2.
- It comprises a plurality of permanent magnets 10 which are this time fixed on an inner face 17 of the longitudinal wall 12 of its cylindrical frame 9, so as to end up in the position of use, close and vis-à-vis screw induction coils 8 of the stator placed in the receiving space 16.
- the permanent magnets 10 are arranged in rows 13, parallel to each other and oriented in the axial direction of the cylinder.
- All the permanent magnets 10 of the same row 13 are of the same polarity. They have for example all their polarity basis North directed towards the longitudinal wall 12 of the frame 9 and their base of South polarity directed towards the inside of the rotor 4, thus forming a "South row” 14. Conversely, if their base of South polarity is directed towards the frame 9 and their North polarity base is directed towards the inside of the rotor 4, they form a "North row" 15.
- the movable part 3 comprises according to the invention at least one fastening strip 18 which is an elongate piece which extends longitudinally between two successive rows 13 of permanent magnets 10.
- the movable part 3 preferably comprises several, and preferably a fastening strip 18 between each of its rows 13 of permanent magnets 10.
- the fastening strips 18 extend parallel to the rows 13 of permanent magnets 10, and therefore in a direction substantially perpendicular to the movement of the movable part 3. They are thus arranged in the axial direction of the cylindrical rotor 4 in the embodiments. represented.
- the fastening strips 18 preferably extend over substantially the entire length of the rows 13 of permanent magnets 10. A single fastening strip 18 can thus be sufficient to effect the locking of the magnets 10 along the entire length of the row 13.
- the fastening strips 18 are made of a non-magnetic material, for example non-magnetic stainless steel.
- the fastening strip 18 comprises a support base 19 extended by an upper longitudinal extension 20.
- the bearing base 19 has a lower face 21, for example flat, and convex convex side flanks 22.
- These lateral flanks 22 are advantageously rounded, and more preferably in involute of circle or arc of circle. Curved shapes without sharp corners, are preferred because they make it possible to avoid the concentrations of field lines.
- a rounded shape is also largely preferable to a simple inclined shape as will be demonstrated with reference to FIG. 17.
- the upper longitudinal extension 20 of the fixing strip 18 has for example a section of generally rectangular shape, with an upper face 23.
- the width of the longitudinal extension 20 is as small as possible, while remaining sufficient to ensure a satisfactory mechanical strength, so as to leave as much room as possible for the magnets 10 which are thus very close to each other .
- the surface of the magnetic elements is thus maximum, which guarantees a very high magnetic flux and improved performance for the synchronous machine.
- the area occupied by the fastening strips 18 represents only about 5% of the total area, the rest being occupied by the magnetic elements.
- the lateral flanks 22 of the support base 19 come to rest on the longitudinal upper edges 25 of the magnets 10 magnets, and thus ensure the vertical (or axial) locking of the magnets 10 on which they rest.
- the magnets 10 located on either side of the fastening strip 18 comprise, at their upper longitudinal edges 25 and their edge 24, a concave portion 26 of rounded shape complementary to that of the corresponding lateral flank 22 of the base of support 19 of the fastening strip 18, wherein the support base 19 of the fastening strip 18 at least partially engage.
- the height of the concave portion 26 of the magnet 10 must be of sufficient height, that is to say at least equal to half of the total height of the magnet.
- the fastening strips 18 are mechanically fixed to the frame 9 of the movable part 3 by any suitable fastening means, for example by screwing, riveting, bolting, crimping or any other similar means.
- the fastening means used may also be made of non-magnetic material.
- the fastening strips 18 are screwed to the frame 9 of the rotor 4 by a set of screws 27 and washers 28.
- Holes 19a and 9a are advantageously provided for this purpose respectively in the base 19 and in the support. the chassis 9.
- the holes 19a are for example holes provided with a thread to cooperate with the screws 27.
- the longitudinal upper extension 20 of the fastening strips 18 is narrower than the diameter of the tapped holes 19a of the fastening strip 18.
- the longitudinal upper extension 20 is preferably interrupted at these threaded holes 19a which are made solely in the base 19 of the fixing strip 18.
- the fixing strip 18 according to the invention can be securely fixed to the frame 9 with few screws 27.
- a screw placed at the end of the magnets is sufficient and it is therefore not necessary to machine the magnets 10 especially to be able to pass additional screws 27 between pairs of magnets juxtaposed.
- the number of parts to put in place is limited and the installation process extremely simple and fast
- Another variant of the invention has been shown in FIGS. 18 and 19.
- the fastening strip 18 has at one of its ends 29, or preferably at both ends 29, an extension 30 which serves as a stop for the last 31 of the magnets 10 of at least one of the two rows 13 between which the fixing strip 18 is placed.
- This extension 30 thus ensures the longitudinal locking of the magnets 10 of this row 13 of magnets.
- the extension 30 may, as shown, protrude on both sides of the fastening strip 18 and thus simultaneously ensure the longitudinal locking of the magnets 10 of the two rows 13 of magnets between which the fastening strip 18 is inserted.
- Permanent magnets 10 may also consist of elements of magnetizable material. The assembly of these elements is thus facilitated insofar as the magnetization of said elements occurs after their mounting on the frame 9.
- the invention also relates to a method of fixing permanent magnets on a frame 9 of a moving magnet-holder part as presented above. This method is implemented using the following steps:
- said method comprises the following steps:
- the magnetizable elements or the permanent magnets 10 are for example fixed on the frame 9, by a bonding operation beforehand and in addition to the fixing operation by the fastening strips 18.
- the method according to the invention consists in screwing the fastening strips 18 directly on the frame 9 or on a bolt attached to a frame 9.
- FIG. 7 shows, by way of example, the use of a support resin 18a, making it possible to form a flexible connection and to retain the magnets 10 before mounting the fastening strips 18.
- a portion of the support resin 18a is advantageously pushed into the interstices between the magnets 10 and the fastening strips 18.
- the polymerization of the support resin 18a thus distributed contributes to the maintenance and protection of the assembly thus formed.
- FIG. 17 illustrates the damping effect of the torque oscillations obtained with the device according to the invention.
- the curves shown in the graph of FIG. 17 represent the induction produced in the gap by the magnets 10 in three different cases.
- the third case corresponds to a rotor whose magnets 10 are held by a fastening strip 18 with rounded lateral flanks 22 according to the invention.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Linear Motors (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2015134830A RU2641896C2 (ru) | 2013-02-20 | 2014-02-20 | Несущая магниты подвижная часть для синхронной машины с постоянными магнитами |
| KR1020157023644A KR20150138178A (ko) | 2013-02-20 | 2014-02-20 | 영구자석 동기기용 자석 구비형 이동 부품 |
| EP14713164.3A EP2959566B1 (fr) | 2013-02-20 | 2014-02-20 | Pièce mobile porte-aimants pour machine synchrone à aimants permanents |
| CA2901656A CA2901656A1 (fr) | 2013-02-20 | 2014-02-20 | Piece mobile porte-aimants pour machine synchrone a aimants permanents |
| US14/768,862 US10186919B2 (en) | 2013-02-20 | 2014-02-20 | Magnet-bearing moving part for permanent magnet synchronous machine |
| JP2015557508A JP6416791B2 (ja) | 2013-02-20 | 2014-02-20 | 永久磁石同期機用の磁石付可動部 |
| CN201480009288.7A CN105027400B (zh) | 2013-02-20 | 2014-02-20 | 用于永磁同步机的磁体承载运动部件 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1351422A FR3002378B1 (fr) | 2013-02-20 | 2013-02-20 | Piece mobile porte-aimants pour machine synchrone a aimants permanents. |
| FR1351422 | 2013-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014128410A1 true WO2014128410A1 (fr) | 2014-08-28 |
Family
ID=48140072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2014/050352 Ceased WO2014128410A1 (fr) | 2013-02-20 | 2014-02-20 | Pièce mobile porte-aimants pour machine synchrone à aimants permanents |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US10186919B2 (fr) |
| EP (1) | EP2959566B1 (fr) |
| JP (1) | JP6416791B2 (fr) |
| KR (1) | KR20150138178A (fr) |
| CN (1) | CN105027400B (fr) |
| CA (1) | CA2901656A1 (fr) |
| FR (1) | FR3002378B1 (fr) |
| RU (1) | RU2641896C2 (fr) |
| WO (1) | WO2014128410A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2515766A (en) * | 2013-07-02 | 2015-01-07 | David Rodger | Reducing bearing forces in an electrical machine |
| FR3042324B1 (fr) * | 2015-10-07 | 2017-10-20 | Lohr Electromecanique | Rotor porte-aimants a chassis monobloc pour moteur-roue |
| IT201600129613A1 (it) * | 2016-12-21 | 2018-06-21 | Bosch Gmbh Robert | Pompa elettrica a ingranaggi |
| IT201600130203A1 (it) * | 2016-12-22 | 2018-06-22 | Bosch Gmbh Robert | Pompa elettrica a ingranaggi |
| CN108777521B (zh) * | 2018-07-27 | 2019-09-06 | 北京金风科创风电设备有限公司 | 磁极模块、电机转子及制造该电机转子的方法 |
| JP7205188B2 (ja) * | 2018-11-21 | 2023-01-17 | 株式会社デンソー | 回転電機 |
| CN111181273B (zh) * | 2019-04-11 | 2021-11-26 | 浙江大学 | 永磁风力发电机的磁极固定装置及永磁风力发电机 |
| CN112366864B (zh) * | 2020-10-29 | 2021-10-01 | 上海电气风电集团股份有限公司 | 电机转子、电机及电机转子的安装方法 |
| JP7023401B1 (ja) * | 2021-04-28 | 2022-02-21 | 三菱電機株式会社 | 回転電機の回転子 |
| JP7672544B1 (ja) * | 2024-05-14 | 2025-05-07 | 三菱電機ビルソリューションズ株式会社 | 回転電機のローター |
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| WO2010109056A1 (fr) * | 2009-03-25 | 2010-09-30 | Abb Oy | Machine électrique à aimants permanents et aimant permanent pour machine électrique |
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| KR100664065B1 (ko) * | 2005-06-20 | 2007-01-03 | 엘지전자 주식회사 | 전동기의 마그네트 고정 구조 |
| RU56738U1 (ru) * | 2005-07-26 | 2006-09-10 | Открытое акционерное общество "Чебоксарский электроаппаратный завод" | Ротор электрической машины |
| DE102006049825B4 (de) * | 2006-10-21 | 2012-10-25 | Esw Gmbh | Anordnung zur Befestigung von Permanentmagneten an schnell drehenden Rotoren von elektrischen Maschinen |
| TWI343688B (en) * | 2007-07-13 | 2011-06-11 | System General Corp | Rotating shaft and motor rotor having the same |
| CN101212154A (zh) * | 2007-12-24 | 2008-07-02 | 湘潭电机股份有限公司 | 永磁风力发电机转子结构 |
| KR100901712B1 (ko) * | 2008-09-09 | 2009-06-10 | 보국전기공업 주식회사 | 발전기 및 전동기 로터 |
| US9515529B2 (en) * | 2009-08-18 | 2016-12-06 | Northern Power Systems, Inc. | Method and apparatus for permanent magnet attachment in an electromechanical machine |
| CN102577032A (zh) * | 2009-10-22 | 2012-07-11 | Tm4股份有限公司 | 设有焊接的磁体保持元件的永磁体转子组件 |
| CA2828527C (fr) * | 2011-02-28 | 2016-09-13 | Danfoss Power Solutuins (Us) Company | Construction de machine a aimant permanent sans balai autorisant des aimants a faible champ coercitif |
| EP2658090A1 (fr) * | 2012-04-26 | 2013-10-30 | Siemens Aktiengesellschaft | Ensemble d'engagement d'aimant de rotor |
-
2013
- 2013-02-20 FR FR1351422A patent/FR3002378B1/fr not_active Expired - Fee Related
-
2014
- 2014-02-20 EP EP14713164.3A patent/EP2959566B1/fr active Active
- 2014-02-20 KR KR1020157023644A patent/KR20150138178A/ko not_active Ceased
- 2014-02-20 JP JP2015557508A patent/JP6416791B2/ja not_active Expired - Fee Related
- 2014-02-20 RU RU2015134830A patent/RU2641896C2/ru not_active IP Right Cessation
- 2014-02-20 US US14/768,862 patent/US10186919B2/en not_active Expired - Fee Related
- 2014-02-20 CA CA2901656A patent/CA2901656A1/fr not_active Abandoned
- 2014-02-20 WO PCT/FR2014/050352 patent/WO2014128410A1/fr not_active Ceased
- 2014-02-20 CN CN201480009288.7A patent/CN105027400B/zh not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4973871A (en) * | 1989-08-23 | 1990-11-27 | Lucas Aerospace Power Equipment Corporation | Stator assembly having magnet retention by mechanical wedge constraint |
| US20060220483A1 (en) | 2005-03-30 | 2006-10-05 | Comprehensive Power, Inc. | Magnet retention on rotors |
| US7573168B2 (en) * | 2005-10-24 | 2009-08-11 | General Electric Company | Method and apparatus for assembling a permanent magnet pole assembly |
| US20090251023A1 (en) * | 2008-04-04 | 2009-10-08 | Mitsubishi Electric Corporation | Permanent magnet rotating electric machine and electric power steering device using the same |
| WO2010109056A1 (fr) * | 2009-03-25 | 2010-09-30 | Abb Oy | Machine électrique à aimants permanents et aimant permanent pour machine électrique |
Non-Patent Citations (1)
| Title |
|---|
| "Brushless Permanent-Magnet Motor Design", 1 January 1994, MCGRAW-HILL, ISBN: 978-0-07-026025-2, article DUANE C. HANSELMAN: "Brushless Permanent-Magnet Motor Design", pages: 117 - 121, XP055121095 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3002378A1 (fr) | 2014-08-22 |
| US10186919B2 (en) | 2019-01-22 |
| CN105027400A (zh) | 2015-11-04 |
| CA2901656A1 (fr) | 2014-08-28 |
| RU2015134830A (ru) | 2017-03-01 |
| RU2641896C2 (ru) | 2018-01-23 |
| EP2959566B1 (fr) | 2019-04-03 |
| JP2016507213A (ja) | 2016-03-07 |
| EP2959566A1 (fr) | 2015-12-30 |
| FR3002378B1 (fr) | 2016-06-10 |
| US20160006306A1 (en) | 2016-01-07 |
| JP6416791B2 (ja) | 2018-10-31 |
| CN105027400B (zh) | 2019-01-01 |
| KR20150138178A (ko) | 2015-12-09 |
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