• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an otor (1) of rotating electrical machine (10), comprising a rotor magnetic mass (3) and at least two permanent magnets (7) defining a pole (11) of the rotor, the two permanent magnets (7) being disposed on either side of a radial axis (Y) of said pole in a housing (8) common formed in the rotor magnetic mass (3) and traversed by the radial axis (Y) of the pole.
    公开号:FR3019948A1
    申请号:FR1453218
    申请日:2014-04-10
    公开日:2015-10-16
    发明作者:Jacques Saint-Michel
    申请人:Moteurs Leroy Somer SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to rotating electrical machines, especially synchronous machines, and more particularly the rotors of such machines. The invention is concerned with permanent magnet rotors, which use flux concentration. Thanks to this, the induction obtained in the gap is greater than the induction in the magnets. The permanent magnet rotors comprise a rotor magnetic mass in which are housed the permanent magnets, which are engaged in housing oriented most often radially. In known rotors, in order to obtain sufficient induction levels in the air gap and to have compact machines, it may be necessary to use magnets with a high energy density, which is therefore expensive. Indeed, such magnets are made with rare earths. In other machines, low-energy magnets made of ferrite are used, but such machines have the disadvantage of requiring high polarity or very large diameter rotors to obtain induction levels in the air gap. comparable to what can be achieved with magnets with high volumic energy. A machine with high polarity requires high frequencies, which results in significant losses in the motor in the form of losses iron and in the inverter in the form of switching losses. Such machines with high polarity and with low energy density magnets are therefore used at limited speeds. Also known are rotating electrical machines comprising non-radial permanent magnets, arranged for example V or U in housings that can be arranged in rows separated by bridges of magnetic material. The presence of these bridges may cause magnetic leakage, which can adversely affect the resulting electromagnetic torque. This problem can be even more important when low energy magnets are used. Thus, rotors of rotating electrical machines do not make it possible to supply machines of relatively low polarity, for example less than eight or even six poles, with efficient use of magnets, in particular ferrite and / or low-level magnets. energy density, and with sufficient electromagnetic torque. There is therefore a need to benefit from a rotating electric machine rotor allowing a more efficient use of the magnets, especially ferrite magnets and / or low energy density, and possibly with a polarity that is not necessarily high. The invention aims to meet all or part of this need and it succeeds, according to one of its aspects, thanks to a rotor of rotating electrical machine, comprising a rotor magnetic mass and at least two permanent magnets defining a pole of the rotor, the two permanent magnets being disposed on either side of a radial axis Y of said pole in a common housing formed in the rotor magnetic mass and traversed by the radial axis Y of the pole. In one exemplary embodiment of the invention, the two permanent magnets 10 are each arranged entirely on the same side of the radial axis of the pole. The two permanent magnets being disposed in a common housing, the rotor has no bridge of magnetic material between these two magnets and bypassing the flow of the magnets, so that the magnetic leakage can be reduced. By "radial axis of the pole" is meant a Y axis of the pole oriented radially, that is to say along a radius of the rotor. It can be an axis of symmetry for the pole. This radial axis can intersect the summit of the pole. A housing may be U-shaped or V-shaped. The rotor may comprise for the same pole at least two housings, a housing having lateral branches parallel to the lateral branches of the other housing. A housing may further comprise a central branch connecting the two lateral branches, which may be devoid of magnet. The central branch may be arc-shaped centered on the axis of rotation of the rotor. The rotor may comprise another V-shaped housing. The rotor may comprise at least one spacer disposed in the housing between the two permanent magnets. The presence of the spacer makes it possible to guarantee the opening of the housing between the two permanent lovers, and to prevent the walls of the housing from coming closer under the effect of the mechanical forces brought into play during operation. Thus, the mechanical strength of the rotor can be improved and the torque transmission favored, which can in particular be useful in the event of a higher rotational speed, for example in the case where the peripheral speed of the rotor (tangential velocity taken at outer diameter of the rotor) is greater than 70 m / s. This spacer can also improve the centering of the rotor, or minimize the use of unbalance. The spacer may be disposed on the radial axis Y of the pole. The spacer may be in contact with the magnets, or on the contrary, not be in contact with the magnets. The spacer is amagnetic. Thus, the presence of the spacer is not a possible passage for the magnetic flux. The spacer may be in cross section of a general shape chosen from the following list: circular, polygonal, square, rectangular, trapezoidal, this list not being limiting. The spacer may extend along a longitudinal axis parallel to the axis of rotation of the rotor. The spacer may comprise one or more longitudinal notches, for example two, opposite each other. The spacer may include in particular two longitudinal notches each disposed on either side of a separation plane parallel to the axis of rotation of the rotor and perpendicular to the radial axis of the corresponding pole. The separation plane may be a plane of symmetry for the spacer, or not. The presence of these notches which cooperate with corresponding reliefs of the magnetic mass of the rotor can make it possible to ensure the wedging of the spacer in the housing and to avoid any displacement of the spacer under the effect of centrifugal forces. The spacer, more particularly the spacer with notches, can be housed in the central branch of the housing, in particular in the central branch in the form of an arc centered on the axis of rotation of the rotor. The spacer may be set back from the side branches of the housing.
    [0002] The rotor magnetic mass may comprise at least one pole piece connected to the rest of the magnetic mass by tangential bridges formed between each of the two ends of the housing and the outer surface of the rotor. The rotor may be devoid of material bridge other than tangential. By "tangential bridge" means a material bridge formed between a housing and the gap. In this case, the rotor is devoid of radial bridges as described above. This can significantly improve the electromagnetic performance.
    [0003] The magnets of a housing may be set back from the corresponding tangential bridges, and not be in contact with the latter. The absence of radial magnetic bridges between the two small magnets can reduce the mechanical strength of the rotor. In the case where the speed of rotation is sufficiently low, for example when the peripheral speed of the rotor is less than 70 m / s, the presence of tangential bridges may be sufficient to ensure the cohesion of the rotor. The rotor magnetic mass may comprise at least one pole piece independent of the rest of the rotor magnetic mass. By "independent", it should be understood that the pole piece is not formed integrally with the rest of the sheets.
    [0004] Thus, the rotor mass is in this case devoid of tangential bridges as defined above. The pole piece may be secured to the rotor mass by any other means, including a reported means, for example by a longitudinal tie therethrough and fixed to one or more end flanges of the rotor. The rotor may also include at least one holding tie of the pole piece. The tie rod may be configured to traverse the pole piece and be attached to one or more end flanges of the rotor. The rotor may comprise at least one end cheek, or even two end cheeks, to which may be attached, if necessary, spacers and tie rods. The rotor may further comprise one or more intermediate cheeks disposed in the magnetic mass, that is to say in the stack of magnetic sheets of the rotor magnetic mass. Rows of permanent magnets The permanent magnets may be arranged in concentric rows, in particular in two concentric rows, for example each disposed in a housing common to all the magnets of the row. The rows may each have a shape of V or U. By "row" means a succession of at least two permanent magnets. A row is in no way necessarily linear. On the contrary, a row can be U-shaped or V-shaped. This arrangement in several concentric rows makes it possible to improve the concentration of the flow without necessarily having to increase the size of the housings or the quantity of permanent magnets necessary to obtain a flow. equivalent.
    [0005] The disposition of the magnets in rows makes it possible to obtain in each pole of the machine a high saliency. This is called a high torque saliency machine, also called synchro-reluctant machine. By "saliency of a pole" is meant that the reluctance varies as one moves in the air gap along the pole during the rotation of the rotor. In an exemplary embodiment, the permanent magnets are arranged in V oriented towards the gap. For the same pole, a row of permanent magnets thus has two lateral branches and is devoid of central branch. The magnets of the lateral branches are in this case arranged in the lateral branches of the housing. The housing can have a U-shape, with a central branch which is in this case devoid of magnet. The V's of the same pole are arranged in a concentric manner, in other words the V's of the same pole are nested inside one another. The V are oriented towards the gap. By "V-oriented air gap" means that the V is open towards the air gap. Each side branch of a V can be foimed by a single permanent magnet. As a variant, each lateral branch of a V is formed by more than one permanent magnet, in particular by two magnets forming, for example, each branch of the V. Such a segmentation of the magnets can make it possible to improve the circulation of the flux in the rotor mass. and / or to introduce bridges to stiffen it. A branch of a V may be formed of several magnets, for example two. Two magnets of a branch of the V can be aligned. In a variant, the magnets forming a branch of a V may each extend along an axis, the two axes forming an angle α between them. This angle may be between 0 ° and 45 °.
    [0006] At least one row of permanent magnets may be devoid of a central magnet, or all the rows of a pole are devoid of a central magnet. By "central magnet" is meant a magnet disposed on the radial axis of the corresponding pole. Thus, in an alternative embodiment, the rows comprise only permanent magnets each disposed entirely on one side of the longitudinal axis of the corresponding pole.
    [0007] Shared permanent magnets The perennial magnets can define magnetic poles of the rotor, including a first pole and a second pole adjacent to the first pole, the first and second poles being of different polarities, permanent magnets specific to the first pole contributing solely to the polarity of the first pole and at least one shared permanent magnet contributing partly to the polarity of the first pole and partly to the polarity of the second pole.
    [0008] In this embodiment, the rotor comprises at least one permanent magnet shared between two consecutive poles. By "shared permanent magnet" is meant a permanent magnet common to the definition of two consecutive poles of the rotor. This magnet can thus be arranged in an interpolar axis. At least one permanent magnet defining said first pole also defines the second pole of the rotor adjacent to the first pole. The boundary between the two consecutive poles passes through at least one permanent magnet. When the permanent magnets are arranged in rows, the first pole of the rotor can be defined by at least a first row of clean permanent magnets and by at least a second row of shared permanent magnets, which second row also defines at least in part the second pole of the rotor adjacent to the first pole. In other words, the second row of permanent magnets simultaneously defines each of the two consecutive poles of the rotor between which it is located. The shared permanent magnet belongs to the second row of permanent magnets. In addition, it can be said in this case that each pole is defined by a number of non-integer rows, being equal to the number of first rows plus one half, in other words that the second row defining said pole counts for half, taking into account the use of the magnets of the second row to simultaneously define two consecutive poles of the rotor. Thus, for a given rotor diameter, the number of rows per pole may be higher, so that the total amount of permanent magnets may be larger, at equivalent bulk. In addition, the saliency ratio can be increased, since the magnets shared between two consecutive poles can form a barrier to the flow of the direct magnetic flux without affecting the magnetic flux in quadrature. At a constant amount of permanent magnets, the electromotive force may be greater and have fewer harmonics, since the zero crossing of the induction in the interpolar axis is angularly smaller.
    [0009] Thanks to the arrangement of the magnets in the rotor mass, sufficient induction levels in the air gap are obtained, even with a relatively low rotor polarity, for example less than 6, while not necessarily using strong magnets. energy density, such as magnets made of rare earths, but on the contrary low energy density, for example made of ferrite. The cost of the rotor can thus be reduced. In addition, the polarity of the rotor can be reduced if the application requires it. In fact, the rotor according to the invention makes it possible to increase the level of induction in the gap without increasing the polarity and by using magnets with a low energy density.
    [0010] Permanent magnets Permanent magnets are preferably rectangular in cross section. Alternatively, the width of a magnet taken in cross section perpendicular to the axis of rotation may taper when moving towards the air gap. The permanent magnets may be generally trapezoidal in cross section. In another variant, the magnets may be in curvilinear cross section, for example of ring-shaped shape. The permanent magnets may be between 4 and 20 mm wide. At least one magnet of a first row, or even less than half of the magnets of a first row, or all of the magnets of a first row, may be of a width greater than 4 mm, better still greater than 8 mm. , or even greater than 12 mm. The magnet or magnets of a second row of permanent magnets may be of the same width as the magnets of a first row, or alternatively of a different width, in particular of an upper width. Thus, at least one shared permanent magnet may be wider in cross section than a clean permanent magnet, being for example twice as large as a clean permanent magnet. Such a configuration can make it possible to minimize, or even better suppress, any circulation of the flux between two adjacent poles, in particular the direct magnetic flux, without affecting the magnetic flux in quadrature, and thus to reduce the harmonic rates. The yield can be improved. In addition, the number of bridges of material, especially radial bridges, can be reduced, so that the electromagnetic torque is improved. The first pole may comprise a single first row, or each of the rotor poles may comprise a single first row.
    [0011] Alternatively, said first pole may comprise at least two first rows, or each of the rotor poles may comprise at least two first rows, including two or even three or more. In one embodiment, the first pole has two first rows. Each of the rotor poles may comprise two first rows. The rotor may have a number of poles between 2 and 12, better still between 4 and 10. The number of poles of the rotor may be less than or equal to 8, or even less than or equal to 6, being for example equal to 4 or 6. Permanent magnets can be made of ferrites or with rare earths or with any other type of magnetic material. The permanent magnets can in particular be made at least partially of ferrite. They may for example not contain rare earths, or at least contain less than 50% rare earth en masse. The arrangement of the magnets makes it possible to concentrate the flux of the magnets and to obtain interesting performances with ferrite magnets.
    [0012] Housing A dwelling may be in cross section of a generally rectangular shape. At least one housing may extend radially over a length greater than the radial length of the corresponding magnet, in cross section. The shape of the cross-sectional housing can be chosen to optimize the waveform of induction in the gap. By way of example, at least one end of the housing in cross section perpendicular to the axis of rotation may be of rectangular, triangular or curved shape. The rows may be of decreasing length when moving towards the air gap, the longest being closer to the axis of rotation and the shorter side of the air gap. The arrangement of the housings and / or permanent magnets in a row is preferably symmetrical with respect to the radial axis of the pole. The housings may have a constant or variable width as they move along their longitudinal axis, in a plane perpendicular to the axis of rotation of the rotor.
    [0013] Rotor mass and shaft The rotor may comprise a shaft extending along the axis of rotation, on which the rotor magnetic mass is arranged. The shaft may be made of a magnetic material, which advantageously makes it possible to reduce the risk of saturation in the rotor mass and to improve the electromagnetic performances of the rotor. The shaft may comprise a magnetic sleeve in contact with the rotor mass, the sleeve being mounted on an axis, magnetic or not. In a variant, the rotor may comprise a non-magnetic shaft on which the rotor mass is arranged. The shaft may for example be made at least partly in a material of the following list, which is not limiting: steel, stainless steel, titanium or any other non-magnetic material. The rotor mass may in one embodiment be disposed directly on the non-magnetic shaft, for example without intermediate rim. Alternatively, especially in the case where the shaft is not non-magnetic, the rotor may comprise a rim surrounding the rotor shaft and coming to bear on the latter.
    [0014] The rotor mass extends along the axis of rotation and is arranged around the shaft. The shaft may comprise torque transmission means for driving in rotation of the rotor mass. The rotor mass may be formed of a stack of magnetic sheet layers. The stack of magnetic sheet layers may comprise a stack 20 of magnetic sheets, each in one piece, each sheet forming a layer of the stack. A sheet may comprise a succession of sectors connected by tangential material bridges. For example, each rotor plate is cut from a sheet of magnetic steel, for example 0.1 to 1.5 mm thick steel. The sheets can be coated with an electrical insulating varnish on their opposite faces before assembly within the stack. The insulation can still be obtained by a heat treatment of the sheets. Alternatively, the rotor mass may comprise a plurality of pole pieces 30 assembled on the rotor shaft, which in this case is preferably non-magnetic. The assembly can be made by dovetails on a machine shaft, or alternatively by means of tie rods as mentioned above. Each pole piece may comprise a stack of magnetic sheets. The distribution of the housings is advantageously regular and symmetrical, facilitating the cutting of the rotor sheet and the mechanical stability after cutting when the rotor mass consists of a superposition of rotor plates. The number of housings and magnets depends on the polarity of the rotor. The rotor mass may comprise any number of dwellings, for example between 4 and 96 dwellings, better still between 8 and 40 dwellings, and even between 12 and 32 dwellings. Magnets can be buried in the rotor mass. In other words, the magnets are covered by portions of magnetic sheets at the gap. The surface of the rotor at the air gap can be entirely defined by the edge of the magnetic sheet layers and not by the magnets. The housing does not open then radially outward. The rotor mass may comprise one or more holes to lighten the rotor, to allow its balancing or for the assembly of the rotor plates constituting it. Holes may allow the passage of tie rods now integral with the sheets. The sheet layers can be snapped onto each other. The housings can be filled at least partially with a non-magnetic synthetic material. This material can lock up the magnets in the housings and / or increase the cohesion of the sheet package. The rotor mass may comprise, where appropriate, one or more reliefs contributing to the proper positioning of the magnets, especially in the radial direction. The rotor mass may have an outer contour which is circular or multilobed, a multi-lobed shape may be useful for example to reduce torque ripples or current or voltage harmonics. The rotor can be cantilevered or not. The rotor can be made of several rotor pieces aligned in the axial direction, for example three pieces. Each piece can be angularly shifted relative to the adjacent pieces ("step skew" in English). Machine and stator The invention further relates to a rotating electrical machine, such as a synchronous motor or a synchronous generator, comprising a rotor as defined above. The machine can be reluctant. It can constitute a synchronous motor. The machine can operate at a nominal peripheral speed (tangential velocity taken at the outer diameter of the rotor) which may be greater than or equal to 100 meters per second. Thus, the machine according to the invention allows operation at high speeds if desired. For example, a rotor with a diameter of 100 mm can operate safely at a speed of 20,000 revolutions per minute. The machine can have a relatively large size. The diameter of the rotor may be greater than 50 mm, more preferably greater than 80 mm, being for example between 80 and 500 mm. The rotor can be inside or outside. The machine may also include a stator, which may be concentrated winding or distributed. The machine may in particular comprise a stator with distributed winding, in particular when the number of poles of the rotor is less than 8. In a variant, the stator may be wound on teeth. The stator may comprise notches for receiving the windings which are closed on the air gap side, being in particular open on the opposite side to the gap. In addition, the stator may include diamond-shaped notches, which may improve the filling of the notches and thus the electromagnetic performance. Finally, it is possible to use wires having a flattened cross-section, being in the shape of a flat surface, so as to increase the copper surface relative to the useful surface of the notch in cross section. The invention can be better understood when read. of the following detailed description of non-limiting exemplary embodiments thereof, and on examining the appended drawing, in which: FIG. 1 is a cross-section, schematically and in part, of a rotor; According to the invention, FIG. 2 illustrates the variation of the resulting torque as a function of the presence or absence of material bridges, and FIGS. 3 to 6 are views similar to FIG. 1, illustrating variants of FIG. production.
    [0015] FIG. 1 illustrates a rotary electrical machine 10 comprising a rotor 1 and a stator 2. The stator 2 comprises, for example, a distributed winding 22. It comprises notches 21 open towards the gap, in which the electrical conductors are arranged. of the winding 22. This stator makes it possible to generate a rotating magnetic field driving the rotor in rotation, in the context of a synchronous motor, and in the case of an alternator, the rotation of the rotor induces an electromotive force in the windings. of the stator. The rotor 1 shown in FIG. 1 comprises a rotor magnetic mass 3 extending axially along the axis of rotation X of the rotor, this rotor mass being for example formed by a stack of magnetic sheets stacked along the X axis, the plates being for example identical and superimposed exactly. They can be held together by clipping, rivets, tie rods, welds or any other technique. The magnetic sheets are preferably magnetic steel. All grades of magnetic steel can be used. The rotor mass 3 comprises a central opening 5 for mounting on a shaft 6. The shaft 6 may, in the example in question, be made of a non-magnetic material, for example non-magnetic stainless steel or aluminum, or on the contrary be magnetic .
    [0016] The rotor 1 comprises a plurality of permanent magnets 7 arranged in housings 8 of the rotor magnetic mass 3. In the example described, the permanent magnets 7 are arranged in two rows 9a, 9b defining the six poles 11 of the rotor. Each of the rows 9a, 9b comprises two permanent magnets 7, which are each arranged on either side of a radial axis Y of said pole 11.
    [0017] The permanent magnets 7 are both arranged in a common housing 8 formed in the rotor magnetic mass 3 and traversed by the radial axis Y of the pole. This housing 8 extends from the air gap in the direction of the shaft, then back to the gap. The housings 8 have a shape of V or U. The permanent magnets 7 are arranged in V oriented towards the gap. For a same pole, a row of permanent magnets thus comprises two lateral branches. The V's of the same pole are arranged in a concentric manner, in other words the V's of the same pole are nested inside one another. A V in the example describes a flared shape towards the gap, the lateral branches of V being non-parallel to each other. All rows of a pole are devoid of a central magnet. The permanent magnets 7 are rectangular in cross section. They may be made of ferrite or alternatively of rare earths, for example of neodymium or other type. Preferably, the magnets are made of ferrite. In the example illustrated in Figure 1, the rotor comprises tangential bridges 16 formed between a housing 8 and the gap. It is devoid of bridge material other than tangential and in particular is devoid of radial bridges. In order to explain the interest of a rotor having only tangential bridges 16, FIG. 2 illustrates the resultant torque (in Nm) as a function of the angle of adjustment in degrees for different rotors. The best results are obtained in terms of torque with a rotor according to the invention having only tangential bridges 16 (curve T), compared to a rotor without bridges (curve S) or to a rotor having both radial bridges and tangential bridges (curve R). As can be understood from the examination of this figure 2, the presence of radial bridges is particularly harmful to the creation of torque, while the presence of tangential bridges is favorable to the couple. One explanation may lie in the fact that the presence of tangential bridges may make it possible to reduce the magnetic disturbances in the magnetic mass at the gap. The rotor of Figure 1 further comprises two spacers 12 and 14 each disposed in one of the housings 8 between the two corresponding permanent magnets 7. The spacer 12 is disposed in the housing 8 closest to the shaft, and it is in cross section of slightly trapezoidal shape. It further comprises two longitudinal notches 13 allowing its wedging in the housing not cooperation with corresponding ribs of the rotor mass. The spacer 14 is disposed in the housing 8 closest to the air gap, and is in circular cross section. It is devoid of longitudinal notch. The rotor magnetic mass 3 comprises for each pole a pole piece 17 connected to the rest of the magnetic mass by the tangential bridges 16 formed between each of the two ends of the housing and the outer surface of the rotor.
    [0018] In an alternative embodiment illustrated in Figure 3, the rotor magnetic mass 3 comprises pole pieces 17 independent of the rest of the rotor magnetic mass.
    [0019] The rotor comprises at least one retaining tie 18 of the pole piece 17. LI may also comprise at least one end cheek, better two end cheeks, to which may be attached, if necessary, the spacers and any tie rods . In the example described with reference to FIG. 1, the rotor comprises spacers 12, 14 arranged in the housings 8 between the two corresponding permanent magnets 7. Of course, it is not beyond the scope of the present invention if it is otherwise, and if the rotor is devoid of spacer, or tie rod, or both. By way of example, FIG. 4 illustrates a rotor comprising housings 8 receiving only the permanent magnets 7, but being devoid of any spacer spacer. Likewise, this rotor does not have a tie rod passing through the pole pieces. In an alternative embodiment, the permanent magnets 7 may be arranged in two rows 9a, 9b defining the six poles 11 of the rotor, including a first pole and a second pole adjacent to the first pole, the first and second poles being of different polarities. The polarity of the first pole of the rotor is defined by one (or more) first rows 9a of permanent magnets 7 own and by a second row 9b of permanent magnets 7 shared, which second row 9b also partly defines the polarity of the second pole of the rotor adjacent to the first pole. FIGS. 5 and 6 illustrate machines 10 comprising such a rotor. The shared permanent magnet 7 contributing to the polarity of the first pole also contributes to the polarity of the second pole of the rotor adjacent to the first pole. The second row 9b of permanent magnets 7 thus simultaneously defines the polarities of each of the two consecutive poles of the rotor between which it is located. The boundary between the two consecutive poles passes through at least said shared permanent magnet 7. In these examples illustrated in FIGS. 5 and 6, each of the poles of the rotor comprises a single first row. The first row of each of the poles is in these examples disposed in V, the concavity of the row being oriented towards the apex of the pole, that is to say towards the gap. It could of course be otherwise, the rotor may include for example two first rows, or more. The embodiment illustrated in FIG. 5 also differs from that illustrated in FIG. 1 in that the stator 2 comprises notches 21 for receiving the coils which are faked on the air gap side. In addition, these notches 21 are open on the opposite side to the air gap. The stator 2 comprises a monobloc dental star 25 and an annular raised yoke 26. The stator is winding distributed fractionally, having notches 21 formed in the dental star 25. The notches 21 are of trapezoidal cross section and the teeth 27 separating the notches have edges parallel to each other. The filling of the notches 21 is done from the outside. After the winding, the whole is inserted into the annular bolt insert 26. The embodiment variant illustrated in FIG. 6 differs from that of FIG. 5 in the configuration of the stator, which comprises notches 21 in the form of diamond tips, which can improve the filling of the notches 21 and thus the electrical performance. The stator of FIG. 4 further comprises a yoke 29 equipped with semi-circular longitudinal ribs 31 intended to house conduits 30 for circulating a cooling liquid. Of course, the invention is not limited to the embodiments which have just been described. For example, the sheets can be made with holes to allow the passage of connecting rods of the laminations of the rotor mass. In addition, the described rotors can be combined with any of the described stators. The expression "comprising ua" must be understood as being synonymous with "comprising at least one" .20
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Rotor (1) of rotating electric machine (10), comprising a rotor magnetic mass (3) and at least two permanent magnets (7) defining a pole (11) of the rotor, the two permanent magnets (7) being arranged on one side and another of a radial axis (Y) of said pole in a housing (8) common formed in the rotor magnetic mass (3) and traversed by the radial axis (Y) of the pole.
    [0002]
    2. Rotor according to the preceding claim, wherein the housing is U-shaped or V.
    [0003]
    3. Rotor according to any one of the preceding claims, comprising for the same pole (11) at least two housings, a housing having lateral branches parallel to the lateral branches of the other housing.
    [0004]
    4. Rotor according to any one of the preceding claims, comprising at least one spacer (12, 14) disposed in the housing (8) between the two peiinanents magnets (7).
    [0005]
    5. Rotor according to the preceding claim, the spacer being disposed on the radial axis of the pole (11).
    [0006]
    6. Rotor according to one of the two preceding claims, wherein the spacer (12) comprises one or more longitudinal notches (13), in particular two notches opposite one another.
    [0007]
    7. Rotor according to any one of the preceding claims, wherein the rotor magnetic mass (3) comprises at least one pole piece (17) connected to the rest of the magnetic rotor mass (3) by tangential bridges (16) formed between both ends of the housing (8) and the outer surface of the rotor.
    [0008]
    8. Rotor according to any one of claims 1 to 6, wherein the rotor magnetic mass comprises at least one pole piece (17) independent of the rest of the rotor magnetic mass (3)
    [0009]
    9. Rotor according to one of the two preceding claims, comprising at least one holding tie rod (18) of the pole piece (17).
    [0010]
    10. Rotor according to any one of the preceding claims, the peimanent magnets being arranged in concentric rows (9a, 9b), in particular in two concentric rows.
    [0011]
    11. Rotor according to any one of the preceding claims, the permanent magnets (7) defining magnetic poles (11) of the rotor, including a first pole and a second pole adjacent to the first pole, the first and second poles being of different polarities. , permanent magnets specific to the first pole contributing only to the polarity of the first pole and at least one shared permanent magnet partly contributing to the polarity of the first pole and partly to the polarity of the second pole.
    [0012]
    12. Rotor according to any one of the preceding claims, comprising a rotor mass (3) receiving the permanent magnets and a non-magnetic shaft (6) on which is disposed the rotor mass (3).
    [0013]
    13. Rotor according to any one of the preceding claims, having a number of poles (11) less than or equal to 8, see less than or equal to 6.
    [0014]
    14. A rotary electric machine (10) comprising a rotor (1) according to any one of the preceding claims and a stator (2), in particular distributed winding (22).
    [0015]
    15. Machine according to the preceding claim, wherein the stator (2) has notches (21) for receiving the windings (22) which are fennecs on the side of the air gap, including being open on the opposite side to the air gap.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3130059A2|2017-02-15|Rotor for a rotary electric machine
    EP3130061B1|2020-01-01|Stator for a rotary electric machine
    EP2814147B1|2018-04-25|Electrical machine with a plurality of air gaps and 3D magnetic flux
    EP1599930A2|2005-11-30|Rotary electric machine comprising a stator and two rotors
    FR2960355B1|2019-06-07|ROTARY ELECTRIC MACHINE WITH IMPROVED MAGNETIC RESISTANCE
    EP3130060A2|2017-02-15|Rotor for a rotary electric machine
    EP2209192A1|2010-07-21|Rotating electric machine, in particular for the starter of an automotive vehicle
    WO2018153738A1|2018-08-30|Axial flow rotating electric machine
    WO2016062844A1|2016-04-28|Polyphase motor having an alternation of permanent magnets and salient poles
    EP2817868A1|2014-12-31|Rotor of a rotating machine with flux concentration
    EP2781007A2|2014-09-24|Rotor with permanent magnets for a rotary electric machine
    EP2433349A1|2012-03-28|Vernier machine with inserted magnets
    WO2021123612A1|2021-06-24|Rotor for a rotating electrical machine
    EP3549238A1|2019-10-09|Electric machine comprising a rotor with angled interior permanent magnets
    WO2021123528A1|2021-06-24|Rotor of a rotary electric machine
    WO2021064315A1|2021-04-08|Rotor for a rotating electrical machine
    WO2021123539A1|2021-06-24|Rotor of a rotary electric machine
    EP3785349A1|2021-03-03|Rotor for a rotating electrical machine
    WO2022018363A2|2022-01-27|Rotary electric machine
    EP2781006A2|2014-09-24|Rotor of a rotary electric machine with flux concentration
    FR3019402A1|2015-10-02|OPTIMIZED PHASE COUPLING ELECTRICAL ROTARY MACHINE AND CORRESPONDING WINDING METHOD
    FR2905205A1|2008-02-29|Tubular electrical machine e.g. synchronous motor, for e.g. roller blind, has stator with one part having windings allowing to differently magnetize claws in direction of rotor rotation, where windings are included in revolution cylinder
    WO2011092654A1|2011-08-04|Rotor having permanent magnets
    同族专利:
    公开号 | 公开日
    CN106165261B|2020-03-20|
    US10432049B2|2019-10-01|
    EP3130059A2|2017-02-15|
    US20170040854A1|2017-02-09|
    WO2015155731A2|2015-10-15|
    WO2015155731A3|2015-12-23|
    FR3019948B1|2017-12-22|
    CN106165261A|2016-11-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4476736A|1979-09-21|1984-10-16|General Electric Company|Transmission for a laundry machine|
    GB2491573A|2011-05-31|2012-12-12|Cummins Generator Technologies|Two part stator for an electrical machine|
    US20130026871A1|2011-07-29|2013-01-31|General Electric Company|Electrical machine|
    EP2611002A2|2011-12-28|2013-07-03|Remy Technologies, LLC|Dual magnet rotor|
    EP2615724A2|2012-01-16|2013-07-17|Samsung Electronics Co., Ltd.|Rotor and motor including the same|RU2689311C1|2017-09-15|2019-05-27|Тойота Дзидося Кабусики Кайся|Rotating electrical machine|
    EP3767797A4|2018-03-16|2021-04-28|Gree Electric Appliances, Inc. of Zhuhai|Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric vehicle|US3126493A|1964-03-24|Permanent magnet motor |
    US3375383A|1965-02-02|1968-03-26|Trw Inc|Magnetic drive device|
    US3845547A|1971-05-12|1974-11-05|Gen Electric|Method of manufacturing a laminated assembly|
    US3840763A|1973-07-09|1974-10-08|Gen Electric|Low flux density permanent magnet field configuration|
    US4204314A|1977-11-14|1980-05-27|S.B.W. Engineers Limited|Method of making cast windings for electric motors|
    US4327302A|1979-09-21|1982-04-27|General Electric Company|Electronically commutated motor, stationary and rotatable assemblies therefore, and lamination|
    IT1219228B|1988-04-21|1990-05-03|Antonino Fratta|SYNCHRONOUS RELUCTANCE ELECTRICAL MACHINE EQUIPPED WITH INTRINSIC POWER SUPPLY MEANS|
    US5191256A|1989-12-15|1993-03-02|American Motion Systems|Interior magnet rotary machine|
    US5510662A|1993-05-26|1996-04-23|Kabushiki Kaisha Toshiba|Permanent magnet motor|
    JP2875497B2|1995-06-30|1999-03-31|アスモ株式会社|Motor stator|
    US6047460A|1996-01-23|2000-04-11|Seiko Epson Corporation|Method of producing a permanent magnet rotor|
    JPH10271716A|1997-03-21|1998-10-09|Matsushita Electric Ind Co Ltd|Stator core of motor and its manufacture|
    TW364234B|1997-04-14|1999-07-11|Sanyo Electric Co|Rotor for an electric motor|
    US6124660A|1997-05-26|2000-09-26|Denso Corporation|AC generator for vehicles|
    DE69811564T3|1997-05-26|2009-04-30|Denso Corp., Kariya-shi|Alternator for motor vehicles|
    US6181043B1|1997-12-10|2001-01-30|Denso Corporation|Alternator for vehicle|
    US6008559A|1997-07-22|1999-12-28|Matsushita Electric Industrial Co., Ltd.|Motor using a rotor including an interior permanent magnet|
    JPH11103546A|1997-09-29|1999-04-13|Fujitsu General Ltd|Permanent magnet motor|
    JPH11215748A|1998-01-23|1999-08-06|Toshiba Corp|Permanent magnet type rotating machine|
    JP2000050542A|1998-07-23|2000-02-18|Okuma Corp|Reluctance motor|
    JP4089072B2|1998-10-23|2008-05-21|三菱電機株式会社|Permanent magnet embedded motor|
    FR2801142B1|1999-11-12|2008-05-30|Leroy Somer|ELECTRIC ROTATING MACHINE SHEET WITH RELATED ELEMENTS|
    JP2002078259A|2000-08-31|2002-03-15|Yamaha Motor Co Ltd|Permanent magnet rotor|
    JP2002112476A|2000-09-28|2002-04-12|Hitachi Ltd|Permanent magnet rotating electric machine|
    JP2002354730A|2001-05-25|2002-12-06|Hitachi Ltd|Permanent magnet electric rotating machine|
    US6703746B2|2002-03-01|2004-03-09|General Motors Corporation|Interior permanent magnet rotor|
    EP1528657B1|2002-08-08|2015-02-11|Aisin Aw Co., Ltd.|Coil forming method and coil forming device|
    JP2004096850A|2002-08-30|2004-03-25|Toyo Electric Mfg Co Ltd|Rotor for induction start type synchronous dynamo-electric machine|
    JP3894483B2|2002-09-04|2007-03-22|三菱電機株式会社|Winding member of rotating electrical machine, method of manufacturing winding assembly, and apparatus for manufacturing winding member|
    JP3982446B2|2003-04-16|2007-09-26|株式会社日立製作所|Manufacturing method of rotating electrical machine|
    DE10345417A1|2003-09-30|2005-05-12|Minebea Co Ltd|Permanent magnet rotor for electric motor has magnets in rotor connected together in pairs at their inner ends by auxiliary magnets|
    JP2005124361A|2003-10-20|2005-05-12|Toyota Industries Corp|Rotary electric machine and its manufacturing process|
    JP4419510B2|2003-10-20|2010-02-24|株式会社豊田自動織機|Motor, armature, or generator|
    US7474029B2|2004-06-14|2009-01-06|General Motors Corporation|Rotor magnet placement in interior permanent magnet machines|
    US7081697B2|2004-06-16|2006-07-25|Visteon Global Technologies, Inc.|Dynamoelectric machine stator core with mini caps|
    US7504754B2|2005-10-31|2009-03-17|Caterpillar Inc.|Rotor having multiple permanent-magnet pieces in a cavity|
    US7436095B2|2005-10-31|2008-10-14|Caterpillar Inc.|Rotary electric machine|
    WO2007055192A1|2005-11-09|2007-05-18|Kabushiki Kaisha Toshiba|Rotor for electric rotating machine and electric rotating machine|
    JP4815204B2|2005-12-01|2011-11-16|アイチエレック株式会社|Permanent magnet rotating machine and compressor|
    US7556082B2|2006-03-29|2009-07-07|Gm Global Technology Operations, Inc.|Interior permanent magnet rotors with multiple properties and methods of making same|
    JPWO2008020471A1|2006-08-15|2010-01-07|株式会社日立製作所|Rotating electric machine|
    EP2061132A4|2006-08-23|2016-06-08|Toshiba Kk|Permanent magnetic type electric motor|
    JP4910572B2|2006-08-30|2012-04-04|株式会社デンソー|Rotating electric machine for vehicles|
    JP5040303B2|2006-12-28|2012-10-03|株式会社日立製作所|Rotating electric machine|
    JP4404223B2|2007-03-20|2010-01-27|株式会社安川電機|Electromagnetic steel sheet forming body, electromagnetic steel sheet laminate, permanent magnet type synchronous rotating electric machine equipped with the same, permanent magnet type synchronous rotating electric machine, vehicle using the rotating electric machine, elevator, fluid machine, processing machine|
    JP2010534459A|2007-07-24|2010-11-04|パワーグループインターナショナルインコーポレイテッド|Apparatus and method for clamping and locking permanent magnets and using tilted concentrated flux magnets to improve cooling in rotating electrical machines|
    US7902710B2|2008-10-01|2011-03-08|Caterpillar Inc.|Electric machine|
    JP5131561B2|2009-03-13|2013-01-30|アイシン・エィ・ダブリュ株式会社|Coil manufacturing method, coil manufacturing apparatus, and coil|
    JP5131560B2|2009-03-13|2013-01-30|アイシン・エィ・ダブリュ株式会社|Coil manufacturing method and coil manufacturing apparatus|
    JP4743329B2|2009-03-31|2011-08-10|株式会社デンソー|Apparatus and method for forming stator coil conductor wire|
    JP2011097723A|2009-10-29|2011-05-12|Honda Motor Co Ltd|Method of manufacturing stator|
    JP5278546B2|2009-12-18|2013-09-04|トヨタ自動車株式会社|Stator|
    JP5494674B2|2009-12-22|2014-05-21|トヨタ自動車株式会社|Rotor and method for manufacturing rotor|
    JP5363403B2|2010-04-19|2013-12-11|トヨタ自動車株式会社|motor|
    JP5292360B2|2010-06-10|2013-09-18|トヨタ自動車株式会社|motor|
    WO2011155061A1|2010-06-11|2011-12-15|トヨタ自動車株式会社|Stator and method for manufacturing unit coil used for same|
    CN102986116B|2010-07-14|2015-11-25|株式会社丰田自动织机|Permanent magnetic baried type rotor and electric rotating machine|
    JP5328821B2|2011-02-03|2013-10-30|トヨタ自動車株式会社|Rotating machine rotor|
    US20140021823A1|2011-04-05|2014-01-23|Toyota Jidosha Kabushiki Kaisha|Stator and manufacturing method for stator|
    JP2013021840A|2011-07-12|2013-01-31|Honda Motor Co Ltd|Rotor of reluctance motor|
    DE112011105558T5|2011-08-26|2014-05-22|General Electric Co.|Permanent magnet rotor with combined laminated core and process for its composition|
    CN103023256B|2011-09-26|2017-03-01|辐射通量实验室私人有限公司|Magneto|
    US9755469B2|2011-10-27|2017-09-05|Toyota Jidosha Kabushiki Kaisha|Segment coil, stator including segment coil, and method of manufacturing segment coil|
    US8933606B2|2011-12-09|2015-01-13|GM Global Technology Operations LLC|Interior permanent magnet machine with pole-to-pole asymmetry of rotor slot placement|
    US10003232B2|2011-12-28|2018-06-19|Toyota Jidosha Kabushiki Kaisha|Rotary electric machine and stator manufacturing method|
    JP5948127B2|2012-04-23|2016-07-06|日立オートモティブシステムズ株式会社|Permanent magnet rotating electric machine and electric vehicle using the same|
    US8760025B2|2012-08-09|2014-06-24|GM Global Technologies Operations LLC|Interior permanent magnet machine having off axis centered arc geometry|
    US9941775B2|2012-11-01|2018-04-10|General Electric Company|D-ring implementation in skewed rotor assembly|
    US20140175916A1|2012-12-20|2014-06-26|Remy Technologies, Llc|Rotor assembly having liquid cooling|
    JP6146219B2|2013-03-29|2017-06-14|アイシン・エィ・ダブリュ株式会社|Concentric winding coil forming method and forming apparatus|
    EP3007319B1|2013-05-28|2020-10-28|Mitsubishi Electric Corporation|Rotary electric machine, and manufacturing method therefor|
    US10594182B2|2014-08-11|2020-03-17|Aisin Aw Co., Ltd.|Stator manufacturing method and stator|
    EP3145058B8|2014-09-01|2018-12-19|Aisin Aw Co., Ltd.|Stator assembling method and stator|
    CN107078580B|2014-09-18|2019-12-24|爱信艾达株式会社|Stator|
    WO2016104645A1|2014-12-26|2016-06-30|アイシン・エィ・ダブリュ株式会社|Stator production method and coil|
    WO2017014217A1|2015-07-23|2017-01-26|アイシン・エィ・ダブリュ株式会社|Stator and method of manufacturing stator|JP6327348B2|2014-08-11|2018-05-23|富士電機株式会社|Rotating electric machine|
    CN106030989B|2014-08-11|2018-09-11|富士电机株式会社|Electric rotating machine|
    DE102016212022A1|2016-07-01|2018-01-04|Volkswagen Aktiengesellschaft|rotor|
    US10491064B2|2017-02-17|2019-11-26|Ford Global Technologies, Llc|Electric machine rotor including nested V-shaped inner and outer pockets|
    FR3064130B1|2017-03-15|2019-06-07|Valeo Equipements Electriques Moteur|ROTOR OF ROTATING ELECTRIC MACHINE HAVING PERMANENT MAGNET HOLDING PIECES|
    US10530204B2|2017-06-13|2020-01-07|Roopnarine|Rotor for electric machines|
    RU2689319C1|2018-04-16|2019-05-27|Федеральное государственное унитарное предприятие "Крыловский государственный научный центр"|Synchronous electric machine with anisotropic magnetic conductivity of rotor|
    JP6933299B2|2018-05-09|2021-09-08|日産自動車株式会社|Rotor structure of rotating electric machine|
    US11095198B2|2018-09-28|2021-08-17|General Electric Company|Electric machine assembly with reduced rotor post leakage|
    CN109450133A|2018-11-06|2019-03-08|山东理工大学|A kind of oblique V-type set magnet permanent synchronization motor of electric car|
    DE102020103868A1|2020-02-14|2021-08-19|Schaeffler Technologies AG & Co. KG|Rotor and method of making a rotor|
    法律状态:
    2015-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-24| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-30| PLFP| Fee payment|Year of fee payment: 5 |
    2020-03-25| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-31| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453218A|FR3019948B1|2014-04-10|2014-04-10|ROTOR OF ELECTRIC ROTATING MACHINE.|FR1453218A| FR3019948B1|2014-04-10|2014-04-10|ROTOR OF ELECTRIC ROTATING MACHINE.|
    CN201580019046.0A| CN106165261B|2014-04-10|2015-04-09|Rotor for rotating electric machine|
    EP15724763.6A| EP3130059A2|2014-04-10|2015-04-09|Rotor for a rotary electric machine|
    US15/303,324| US10432049B2|2014-04-10|2015-04-09|Rotor for a rotary electric machine|
    PCT/IB2015/052592| WO2015155731A2|2014-04-10|2015-04-09|Rotor for a rotary electric machine|
    [返回顶部]