EP2471159A2 - Rotor à aimants permanents - Google Patents

Rotor à aimants permanents

Info

Publication number
EP2471159A2
EP2471159A2 EP10766234A EP10766234A EP2471159A2 EP 2471159 A2 EP2471159 A2 EP 2471159A2 EP 10766234 A EP10766234 A EP 10766234A EP 10766234 A EP10766234 A EP 10766234A EP 2471159 A2 EP2471159 A2 EP 2471159A2
Authority
EP
European Patent Office
Prior art keywords
pole
magnetic
permanent
magnetic circuit
permanent magnet
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.)
Withdrawn
Application number
EP10766234A
Other languages
German (de)
English (en)
Inventor
Joachim Sabinski
Hans Kuss
Konrad Kadletz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guthardt Uwe
Original Assignee
Guthardt Uwe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guthardt Uwe filed Critical Guthardt Uwe
Publication of EP2471159A2 publication Critical patent/EP2471159A2/fr
Withdrawn legal-status Critical Current

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
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect

Definitions

  • the invention relates to permanent-magnet internal rotor and
  • Permanent magnets with radial alignment of the magnetic poles.
  • the invention is assigned to the category of permanent magnet machines which have a buried, ie protected, arrangement of the magnets in the magnetic circuit. This excludes demagnetization of the magnets even for extreme operating states.
  • LäufererblechBe a Schenkelpolnic foundationrs with punched out poles and pole gaps.
  • the excitation is secured against the electrical excitation by means of permanent magnets.
  • the Läufererblechobi therefore has modified smaller pole gaps and closed grooves in the poles for
  • Ferromagnetic material consist, shorting bars
  • Pole gaps between the poles resulting in a reduction of machine parameters.
  • the laminated cores of the ferromagnetic rotor consist of circular blanks with a slightly wavy outer contour, in the region of the magnets with pronounced pole curvature and in the pole gaps with a slight counter-curvature.
  • the grooves for receiving the permanent magnets have tapered to the pole gaps hollow sections, which are so a magnetic
  • US 4 464 596 A describes a permanent magnet rotor with several sections.
  • the permanent magnets have radially oriented magnetic poles and are rod or
  • a pole piece is arranged, which consists of a
  • Sheet package exists.
  • the laminated core is welded to a non-magnetic insert or positively connected thereto.
  • the non-magnetic insert separates the permanent magnets from each other and is bolted to the rotor shaft.
  • Insertion is complex, brings magnetic inhomogeneities and a loss of strength in the rotor and holds the Uncertainty of a loosening of the screw connection in itself.
  • the rod-shaped or plate-shaped permanent magnets allow no influence on the pole field, whereby no reduction of harmonics can take place.
  • the invention is based on the object modifiable permanent-magnet rotor assemblies with tangential arrangement of the permanent magnets for a variety of shaft heights,
  • US 2008/0088194 A1 discloses a permanent magnet rotor which consists of a laminated core in which permanent magnets are embedded. One embodiment described provides that they form a common pole
  • Magnetic circuit main body and pole piece are separated from each other. A high installation effort is thereby avoided by the magnetic body forming laminations of whole
  • Sheet metal discs are made, which are pushed onto the rotor shaft and the permanent magnets in their interior in
  • Material width of a web between permanent magnet and pole gap can expect a low radial load capacity of the rotor, since the web is the radial load of the
  • Permanent magnets is a potting compound made of epoxy resin with aluminum filling. Compared to the air gap, the permanent magnets are shielded by soft iron shoes, formed from a laminated core. A shallow groove in the irons shoes is used to hold the magnets
  • Potting compound is held by a rivet.
  • the invention is based on the object modifiable permanent-magnet rotor assemblies with tangential arrangement of the permanent magnets for a variety of shaft heights,
  • the object of the invention is achieved by a
  • Permanent magnetic rotor with recessed and protected, approximately tangentially arranged permanent magnet with radial polarity, wherein at least one ferromagnetic
  • Air gap field shape can be influenced and in a predetermined form and intensity, in particular with an approximately sinusoidal shape, can be formed.
  • the pole anchor will be
  • pole shoes do not experience any weakening of their cross-section, since channels or bores for their stiffening or for assembly, the setting of
  • pole back anchors engage in a recess in this. While the pole pieces are preferably made of a ferromagnetic material, the material of the pole back anchors is non-magnetic. In the area in the pole piece and
  • Interlock pole anchor is therefore one
  • the magnetic field lines penetrate the area partially, but will be
  • the intensity of the magnetic field can thus be controlled. This can be done in the peripheral areas of the Polschuhs in a particularly advantageous manner the
  • the pole shoes have an unattenuated and in one embodiment in the region of the highest bending moment additionally reinforced cross-section, achieved a high mechanical strength and rigidity against deformation.
  • Permanent magnetic rotor and the stator can be achieved.
  • the permanent magnets which are preferably arranged in the region between the magnetic circuit main body and the pole shoe, in a particularly preferred embodiment have a shape which is approximately adapted to the radius of the permanent magnet rotor.
  • Magnetic circuit main body and / or the pole piece and / or the pole eye anchor each formed from a laminated core and therein recesses provided which receive the permanent magnets.
  • Pollückenankers the ability to produce from layer to layer changing magnetic properties in the transition region between pole piece and pole anchor. This results in a particularly uniform transition region and a smooth course of the isolines of the intensity of the magnetic field at the edge regions of the pole shoes towards the pole gaps.
  • the pole pieces have recesses which are for
  • Magnetic circuit main body has recesses in the direction of the pole pieces. These recesses are all in one
  • the magnetic circuit main body and the pole piece together
  • the magnetic circuit main body and the region of the pole shoes are made so thin that it only carries the loads during assembly. As a result, losses caused by the
  • the connecting bridge is used only during assembly with its carrying properties, as the
  • Pole shoes are each positively connected.
  • a plane of the laminated core consists of an electrical sheet with the magnetic circuit main body with recesses, wherein in the recesses part of a Pollückankers engages and thus with the
  • Magnetnikста stresses are positively connected and a further part of the pole eye anchor is disposed in a recess of a pole piece and between the with the
  • Pole shoe forms a recess in which later at least one permanent magnet is provided.
  • Polschuhs is formed, wherein at least two differently shaped recesses are formed with preferably open contour, in which the at least two different, the recesses correspondingly shaped embodiments of
  • Pollückenankers are arranged. Pollückanker and pole shoes grab because of their corresponding forms so
  • Embodiment are used alternately. Alternatively, however, it is envisaged to use a single embodiment or more than two embodiments. From the use of different embodiments, in alternation
  • a development of the invention provides that the
  • Permanent magnets formed. The separation of the magnets prevents their short circuit in terms of the magnetic field, increase the magnetic surface, as well as the
  • At least one spacer element is designed as a pole shoe anchor, the pole piece with the magnetic circuit main body
  • Such a mechanical connection is particularly preferably designed as a positive connection, for example by an I-shaped pole shoe anchor. If only a single Polschuhanker provided in the pole piece, this is preferably arranged in the middle of the pole piece, since here is the
  • a centrally arranged spacer element and arranged in the middle Polschuhankers complement in a particularly favorable manner, especially since in the middle of the highest bending moment occurs in the pole piece. But it is also envisaged to use more than one Polschuhanker on a pole piece, especially if they also magnetically separate more than two permanent magnets by their property as spacers.
  • Avoidance of eddy currents requires electrical isolation. Otherwise, the existing to avoid eddy currents from layered sheets elements would be electrically connected to each other and the effect of electrical isolation, which should avoid eddy currents in the entire element would be repealed. Therefore, an insulation of permanent magnets, for example by a paint, is advantageous and known.
  • the isolation by a ceramic coating brings with it special advantages.
  • a ceramic insulation has a smaller layer thickness than alternative solutions, for example a lacquer, so that the air gap inevitably resulting from the insulating layer becomes smaller towards the pole piece and the transition of the magnetic flux from the permanent magnet into the pole shoe is improved.
  • a ceramic coating is more resistant to mechanical damage, so that mounting restrictions and extra care during assembly are not required. This simplifies assembly.
  • the poles are in the region of the pole center
  • a first constructive measure is a
  • Design also marks the center of the pole piece, a material accumulation of magnetically active material. This results in a permanent magnet of greater thickness. This has a stronger magnetic field in the area of thickening.
  • Permanentmagnet followedr towards leads to an increase in the magnetically active surface, which particularly advantageous to a reinforcement of the pole field, in particular in the region of the Polmitte, leads.
  • pole shoes are separated by pole gaps.
  • the magnetic flux breaks off directly at the end of the pole piece. From this
  • a transition region is provided to overcome these disadvantages, which in the particularly preferred embodiment, an approximately sinusoidal drop in the magnetic flux between the center of the pole piece and the center of the pole piece
  • Pollückenankers generated. Pollückanker and pole shoes attack each other in such a way that in the direction of the
  • Transition region the magnetic properties of ferromagnetic increase at the beginning of the transition region
  • this is Waste sinusoidal, but other possibilities for the design of the transition area are provided.
  • a less hard drop of Polfeldes be generated by appropriate coverage of the materials.
  • the object of the invention is further achieved by a method for mounting a permanent magnet rotor with recessed and protected, approximately tangentially arranged permanent magnet with radial polarity, wherein the
  • ferromagnetic pole pieces are positively connected directly to the non-magnetic pole-back anchors, wherein the magnetic circuit main body and / or the non-magnetic
  • Pole anchor z. B. by setting mandrels and / or setting strips of individual sheets are constructed.
  • the ferromagnetic magnetic circuit main body, the non-magnetic pole-back armature and the ferromagnetic pole shoes are constructed.
  • Pollückanker layer by layer together with the ferromagnetic pole piece or be mounted immediately after this.
  • Permanent Magnetic Rotor learns from the prior art known skewing that it is twisted about its axis. Here baskets are used. This is done from layer to layer, an offset in the direction of the skew or torsion of the permanent magnet rotor.
  • Magnetic circuit main body and pole piece used that it connects both elements both form-fitting, as well
  • Elongation of the permanent magnet rotor prevents or reduces, and thus the air gap between the permanent magnet rotor and stator can be reduced as well as a higher speed
  • the onset of the permanent magnets is advantageously carried out using spacers, z. B. hard tissue.
  • the present invention has the special
  • Circulation speeds is suitable and that around the
  • Permanent magnetic rotor in particular over the pole pieces of the individual poles, constructed air gap field in its shape and
  • Expression can largely be adjusted according to the specifications, in particular while avoiding hard jumps in the course of
  • Fig. 1 shows a permanent magnet excited rotor with a
  • Fig. 2 shows a permanent magnet excited rotor with a
  • Fig. 3 is a permanent magnet excited rotor with a
  • Fig. 4 schematically a halved view of a
  • Fig. 5 shows schematically a halved view of a
  • Fig. 6 schematically a halved view of a
  • Permanent magnet rotor with pole shoes connected to a magnetic circuit main body
  • FIG. 7a shows schematically a view of an embodiment of a permanent magnet rotor according to the invention with symmetrical
  • Fig. 7b schematically a halved view of a
  • Fig. 7c schematically a halved view of a
  • Fig. 7d schematically a halved view of a
  • Fig. 8a schematically shows a view of an embodiment of a permanent magnet rotor according to the invention with asymmetric
  • Fig. 8b schematically a halved view of a
  • Fig. 8c schematically a halved view of a
  • FIG. 8d schematically a halved view of an embodiment of an inventive
  • FIG. 9 shows schematically a view of an embodiment of a permanent magnet rotor according to the invention with additional permanent magnet
  • 10a is a quarter-view of an embodiment of a permanent magnet rotor according to the invention with a slanted construction
  • Fig. 10b schematically a halved view of a
  • Fig. 10c schematically a halved view of a
  • Fig. 10d schematically a halved view of a
  • the permanent magnet rotor has protected and sunk arranged, tangentially oriented permanent magnets 1, which lie in cavities or groove areas, which by a
  • Magnetic circuit body 5.2 are formed by pole anchor 2.1 to 2.13 and by pole shoes 5.1.
  • the magnetic circuit body 5.2, the pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can have a wide variety of shapes.
  • the pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can have a wide variety of shapes.
  • the pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can have a wide variety of shapes.
  • Magnetic circuit main body 5.2 in cross section square. At the four corners of the magnetic circuit body 5.2 recesses for fastening elements for the non-magnetic pole-back anchors 2.1 to 2.13 are provided.
  • the permanent magnets 1 lie flat on the outer sides of the magnetic circuit main body 5.2.
  • the Polschuh 5.1 and the magnetic circuit base body 5.2 groove regions formed the permanent magnets 1 are isolated or not isolated.
  • square shape of the magnetic circuit main body 5.2 are at least two adjacent permanent magnets 1, the permanent magnets 1 and the pole pieces 5.1 between the permanent magnet 1 on each magnetic base body side by one or more doppel - 1 - shaped, non - magnetic
  • the pole shoe anchors 3.1 to 3.3 are in the pole piece 5.1 and in the magnetic circuit main body
  • the pole shoe anchors have 3.1 to 3.3
  • Magnetic circuit main body 5.2 such.
  • Embodiment 13 or in an external rotor variant.
  • Magnetic base 5.2 rich and thus lock the pole piece 5.1 on the magnetic base 5.2.
  • Cross section are also provided at the corners recesses for fasteners for non-magnetic pole pole anchor 2.1 to 2.13.
  • the already described non-magnetic pole shoe anchors 3.1 to 3.3 are available.
  • On each outer side of the magnetic circuit main body 5.2 are two or more permanent magnets 1 flat against, over which more two or more permanent magnets 1 are arranged, separated by spacer elements 4 and by specially shaped pole pieces 5.1. Centered between the permanent magnets 1 on each Magnetic base body side lying double - 1 - shaped non - magnetic pole shoe anchors 3.1 to 3.3, in the pole piece 5.1 and in
  • Magnetic circuit main body 5.2 are anchored.
  • the magnetic circuit main body 5.2 may also have a polygonal cross-section with recesses for fastening elements for non-magnetic pole back anchors 2.1 to 2.13. Between two pole bridge anchors 2.1 to 2.13, on the outside of the magnetic circuit main body 5.2 with different size of permanent magnets 1.1 in an arcuate arrangement with or without non-magnetic packing 8 between the
  • Permanent magnet 1 per rotor pole or the same size
  • pole shoes 5.1 and this pole pieces 5.1 holding pole back anchors 2.1 to 2.5 are locked on the magnetic circuit body 5.2.
  • Pole shoes 5.1, possibly the non-magnetic, triangular-shaped packing 8 and the magnetic circuit body 5.2 also form groove areas in which the permanent magnets 1.1 and 1.2 are isolated or not isolated. With this constructive solution, machines can be realized with a number of poles equal to and greater than two.
  • the magnetic circuit main body 5.2 may also have a circular cross section in section. Again, here are
  • Pollückanker provided 2.1 to 2.13, wherein between two pole anchor anchors 2.1 to 2.13 on the outside of
  • Magnetic circuit main body 5.2 arcuate permanent magnets 1 with or without spacers 4 between the
  • Permanent magnets 1 abut and by specially shaped pole pieces 5.1 and this pole pieces 5.1 holding pole anchor 2.1 to 2.13 and possibly non-magnetic pole shoe anchor 3.1 to 3.3 are locked on the magnetic circuit main body 5.2.
  • the rotor shaft 9 can with bulges 9.1 and / or
  • Sections 9.2 be provided and the magnetic circuit main body 5.2 may have a necked body, as sintered or as a cast body complementary bulges and cuts. As a result, are kept very flat
  • Magnetic circuit main body 5.2 possible. On the outside of the magnetic circuit main body 5.2 are two permanent magnets 1 in a straight line arrangement per rotor pole, separated by an amagnetic spacer element 4, flat fitting. By specially shaped pole shoes 5.1 and this pole pieces 5.1 holding pole back anchor 2.13, the permanent magnets 1 are locked on the magnetic circuit body 5.2.
  • the pole-back anchors 2.1 to 2.13 can be made of insulated, non-insulated, set, non-magnetic sheets or of solid non-magnetic materials, such as non-magnetic or non-magnetic non-magnetic
  • Materials such as fiber-reinforced high-performance plastics with composite material.
  • At pole anchor 2.1. to 2.12 in a lamellae embodiment are preferably setters 7.1 to 7.5 in the form of bars 7.1 or flat 7.2, 7.4 and 7.5 of non-metallic high performance materials with reinforcing profiles inside or made of non-magnetic metallic materials 7.3
  • pole anchor 2.1 to 2.12 made of fiber-reinforced high-performance plastic used.
  • the pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can be designed as a whole or over the length as segments.
  • the pole-back anchors 2.1 to 2.13 are preferably bolted to the magnetic circuit main body 5.2 by means of non-magnetic screws or embedded by means of non-magnetic wedges with embedded in Magnet Vietnamese Kochschreibêt 5.2 threaded tine.
  • the threaded hole strips can also be arranged in the rotor shaft 9 or a screw connection takes place directly in the rotor shaft 9.
  • the pole shoes 5.1 advantageously have pole shoe reinforcements 6.1. up to 6.3 in the form of reinforced pole side edges 6.1, from bars 6.2 or from flat strips 6.3.
  • the pole-back anchors 2.1 to 2.13 have a triangular shape in section, wherein a triangular point with a flattened shape is directed in the direction of the magnetic circuit main body 5.2 and the two other triangular points may have the most varied shapes.
  • a triangular point with a flattened shape is directed in the direction of the magnetic circuit main body 5.2 and the two other triangular points may have the most varied shapes.
  • Pole anchor2.1 with angled ends, which are in the
  • non-magnetic packing 8 as polling anchor anchor 2.6 with branched off below the ends anchoring lugs, as Pollückanker 2.7 with a continuous threaded hole, as Pollückenanker 2.8 with a threaded blind hole, as
  • Pollückanker 2.9 with a vogelschwingenar term form with a through hole with internal thread, the ends of which engage in parallel to the permanent magnets 1 grooves of the pole piece 5.1, as Pollückenanker 2.10 with a
  • vogelschwingenar term form with a through hole, the ends of which engage in parallel to the permanent magnet 1 grooves of the pole piece 5.1, as Pollückenanker 2.11 with a stair-like mounting aid with integrated
  • pole back anchor 2.12 with angled ends and sides adapted to the permanent magnets 1 and additional mechanical attachment of the pole shoes
  • the pole-back anchors 2.1, 2.2, 2.4 to 2.12 have screw connections to the magnetic circuit main body 5.2, with the variants of a United gland through the
  • pole-back anchors 2.3 and 2.13 are locked by wedges on the magnetic circuit main body 5.2.
  • the pole-back anchors 2.7 to 2.9 are preferably for
  • pole-back anchors 2.1 to 2.13 and the pole-shoe anchors 3.1 to 3.3 advantageously have alignment and assembly aids 10.1 to 10.6 for alignment and anchoring thereto
  • These installation and assembly aids can be cylindrical 10.1, dovetailed 10.2, triangular 10.3, 10.4 stepped, angled 10.5 or triangular trapezoidal 10.6, and can be used during installation
  • Pole anchor 2.1 to 2.13 to the desired location.
  • the pole-back anchors 2.1 to 2.13 are designed so that any method of gluing and soaking for
  • Lock pole shoes 5.1 on the magnetic circuit main body 5.2 In the constructive variant with pole shoe anchors 3.1 to 3.3, these are in the pole head 5.1 and in the
  • Magnetic base body 5.2 are taken, possibly with the aid of Ausl - ichtungs - and assembly aids 10.1 to 10.6. Subsequently, the permanent magnets are 1
  • Figure 4 shows schematically a halved view of a
  • Permanent magnet 1.3 wherein the thickness across the width B the permanent magnet 1.3 changes.
  • the permanent magnets 1.3 are in a particularly preferred embodiment
  • both permanent magnets 1.3 are kept at a distance, whereby the assembly is facilitated.
  • Another division of the permanent magnets 1.3 is provided, for example, a tripartite division.
  • the permanent magnets 1.3 have a curvature that is stronger than the radius of the permanent magnet rotor 20.1 in the region of
  • Permanent magnets 1.3 The curvature of the permanent magnets 1.3 is used to reduce these in the middle of the pole piece 5.4 further in the direction of axis A. Another effect results from the curvature of the
  • Magnetic surface on the convex curved side and thus an overall stronger magnetic field compared to planar permanent magnets can be constructed.
  • pole shoes 5.4 are held in position by the recesses 23.1 disposed at their ends.
  • the pole-back anchors 2.14 engage in the recesses 23.1, which have a corresponding shape.
  • a particular advantage of this solution is that the pole pieces 5.4 do not require any holes or receptacles that hold them in position during operation or during assembly. So can on disturbing
  • Magnetic circuit main body 21.1 a recess 22.1 in the area of the pole anchor 2.14, in which engages the pole anchor 2.14.
  • the embodiment shown here has between the lastaufmonyden areas of the pole back anchor 2.14 and the magnetic circuit 21.1 Festetzer 7.6. These ensure a favorable load distribution and avoid too high compressive stresses in the material. This is particularly advantageous if the materials that were used for the production of the magnetic circuit main body 21.1 and / or the pole back anchor 2.14, were selected primarily because of their magnetic properties and the
  • the Festetzer 7.6 are executed in a preferred embodiment of the invention as wedges and serve according to the
  • Magnetic circuit main body 22.1 and pole back anchor 2.14 assembled by means of setting mandrels.
  • the circular blanks of the magnetic circuit main body 21.1 have recesses 10.8 and those of the pole shoe anchors 2.14 have recesses 10.7.
  • Magnetic circuit main body 21.1 is provided.
  • Another alternative embodiment provides massive pole back anchors 2.14.
  • An alternative embodiment uses prefabricated
  • Pole shoes 5.4 These are designed as laminated cores.
  • the recess 23.1 in the pole shoes 5.4 further causes an overlap of the materials of pole anchor 2.14 and pole shoes 5.4 in a transition region between
  • Pole anchor 2.14 and pole shoes 5.4 This results in no abrupt termination of the magnetic field towards the pole gap, which is inventively filled by the pole anchor 2.14. Instead, a soft, in his
  • the recess 23.1 in the special embodiment, has a direction of rotation of the permanent magnet rotor 20.1
  • the pole anchor 2.14 also has a foot rest 24.1 in the area of the foot of the pole anchor 2.15
  • FIG. 5 schematically shows a halved view of a
  • Permanentmagnet foundedrs 20.2 with centrally reinforced pole pieces 5.5 which is characterized by a particularly strong curvature of
  • Permanent magnet 1.4 is enabled. These, in turn, in another embodiment, in two parts executed, bulge in the area of the middle of the pole shoe 5.5 to the axis A. This inevitably leads to an increase in the height of the pole piece 5.5, which in particular results in an improved strength in this region subject to high stress on bending.
  • the arched to the axis A permanent magnets 1.4 also have an enlarged area. This surface enlargement is particularly strong in the middle of the pole piece 5.5, whereby a very strong magnetic field is produced in this area in a particularly advantageous manner.
  • Permanent magnets with locally, in particular centrally, thickened permanent magnets before.
  • the permanent magnets are curved approximately in Polmitte to the axis and at the same time significantly thicker than at the ends that point to the edge of the pole. This results in a greater material thickness and at the same time a larger one
  • the pole piece 5.5 is replaced by one in its area
  • a pole anchor 2.15 engages held.
  • the pole-back anchor 2.15 has these recesses 10.7, which are designed in the embodiment as circular holes on. Due to the shape of the shaft receiving 28 separate recesses for a setting mandrel in the magnetic circuit 21.2 are not required in the illustrated embodiment.
  • Pole-back anchor 2.15 also has a foot rest 24.2 in the area of the recess 22.2 receiving the foot of the pole-back anchor 2.15. This is shown in the
  • Embodiment formed at an acute angle is formed at an acute angle.
  • Other contours are provided in alternative embodiments, such as polygonal or rounded contours.
  • FIG. 6 schematically shows a halved view of one
  • Pole shoes 5.6 The connection consists in a web 25 which is arranged in the region of the pole gaps. The pole gaps are filled in by a pole anchor 2.16.
  • the connection consists in a web 25 which is arranged in the region of the pole gaps. The pole gaps are filled in by a pole anchor 2.16.
  • Permanent magnets 1.4 as shown in Figure 2, curved, allow the pole pieces 5.6 a central
  • the webs 25 are made very narrow, give the
  • Pole shoes 5.6 no mechanical function during operation. Rather, they serve only the cohesion of
  • the strength is achieved by the pole back anchor 2.16, both in the magnetic circuit body 21.3 and in
  • Pole 5.6 is anchored. While in the particular case
  • the magnetic circuit main body 21.3 and pole pieces 5.6 are constructed nested, the pole anchor 2.16 is made solid. This is preferably in the
  • Pollückankers 2.16 by this both the sheet stack in a direction along the axis A secures, as well as a firm connection between the magnetic circuit 21.3 and Polschuh 5.6 produced, in this embodiment, a bias is generated by the interference fit in Pollückanker 2.16, which at an axial load the yielding deformation of the permanent magnet rotor 20.3 counteracts.
  • the pole-back anchor 2.16 is preferably made solid with a corrugated surface to the air gap between permanent magnet rotor 20.3 and stator out. This allows high speeds of the permanent magnet rotor 20.3 in operation. In addition to a massive version of the pole back anchor 2.16 is provided in an alternative embodiment that this is carried out laminated. The outer surfaces can be ground here.
  • FIG. 7a schematically shows a view of an embodiment of a permanent magnet rotor 20.4 with symmetrical
  • Magnetic base body 21.4 anchored foot area does not differ from each other, is the pole anchor 2.17 in the recess 23.4 of the sheet of pole pieces 5.7
  • Magnetic circuit main body 21.4 as well as the
  • Magnetic circuit main body 21.4 completely assembled and then the pole anchor 2.17 and the pole pieces 5.7
  • Permanentmagnet literally used permanent magnets 1.5 are divided into two and have between the two parts, in the region of the center of the pole piece 5.7 a spacer 4.1.
  • the spacer 4.1 causes a distance between the two permanent magnets 1.5 from each other, thus avoids an otherwise possible friction of the magnets each other during assembly.
  • the spacer 4.1 must have non-magnetic properties. In addition to the two-part form shown here
  • Permanent magnets 1.5 other designs are provided, such as one-piece permanent magnets, which in a particularly preferred embodiment have a special shape and, for example, have a thickening in the middle or at the edge or a strong radius, the radius of the
  • the spacer elements 4.1 are formed I-shaped. The ends of the spacers 4.1 thus formed engage
  • each of the pole pieces 5.7 has a large length to cover the circumference of the permanent magnet rotor 20.4.
  • Polschuh several I-shaped running, designed as a pole shoe spacers 4.1 are arranged.
  • Figure 7b shows schematically a halved view of a
  • FIGS. 4b to 4d serve the purpose of FIG.
  • the pole-back anchors 2.17 shown in FIG. 7b have a broad head area, which requires very deep recesses 23.4 in the pole shoes 5.7.
  • the pole shoes are correspondingly short 5.7.
  • the recesses 10.8 serve in the same purpose in the
  • FIG. 7c shows schematically a halved view of a
  • Pole anchor 2.17 N and wide plates of pole shoes 5.7 N This represents the embodiment shown in Figure 4b, the subsequent layer in the laminated core.
  • the plates of the pole anchor 2.17 N have a narrow head, so that they engage comparatively less deeply in the pole shoes 5.7 N and here in their recesses 23.4 N.
  • the pole shoes 5.7 N thus have a greater length.
  • Figure 7d shows schematically a halved view of a
  • Figure 8a shows schematically a view of an embodiment of a permanent magnet rotor 20.5 with asymmetric
  • Polling Anchors 2.19 The asymmetry is in the head of the pole anchor 2.19, where, for example, an extended head area to the left and when turning the
  • Polling anchor 2.19 in the way that he comes to rest on his other, the first opposite plane pointing to the right.
  • the foot region of the pole back anchor 2.19 is designed symmetrically and fits into the recess 22.5 in the magnetic circuit main body 21.5 in one as well as in another position.
  • the asymmetrical design of the pole anchor 2.19 makes it possible in an advantageous manner, with only a single element of an alternating construction with a
  • asymmetric pole anchor 2.19 allows the asymmetric pole anchor 2.19 to be alternately turned on one of its two sides and mounted in position.
  • Magnetic circuit main body 21.5 received by a setting mandrel, not shown, while the recesses 10.7 of
  • Recesses 23.6, 23.7 are kept safe both during assembly and during operation.
  • Figure 8b shows schematically a halved view of a
  • the pole-back anchor 2.19 has an extension of the head portion, which is aligned in the figure counterclockwise as shown here.
  • the pole-back anchor 2.19 has a foot region, which is aligned towards the axis A, anchored to the magnetic-circuit main body 21.5 and, in the preferred embodiment, radially symmetrical.
  • the extension of the head of the pole back anchor 2.19 engages in a correspondingly recessed recess 23.7 of the pole piece 5.9.
  • the pole piece 5.9 likewise has an asymmetry, since the recess 23.7 arranged at one end is correspondingly deeper
  • Figure 8c shows schematically a halved view of a
  • Permanentmagnet Congressr 20.5 is constructed, each rotated by 180 degrees, ie in the other position, installed.
  • Figure 8d shows schematically a halved view of a
  • Sheet metal packs from the same sheet metal parts for the pole anchor 2.19 and the pole shoes 5.9, each from layer to
  • Figure 9 shows schematically a view of an embodiment of a permanent magnet rotor 20.6 with additional Permanent magnet arrangement 1.7, 1.7 N , 1.8 in the middle of the pole piece. It is under the from the above
  • Layer of permanent magnets 1.7 an additional layer of permanent magnets arranged 1.8. This is arranged according to the preferred embodiment in the direction of the axis A in a recess in the magnetic circuit main body 21.6 and consists per pole of a single permanent magnet 1.8. Alternative embodiments provide to arrange the additional permanent magnet 1.8 elsewhere,
  • Thick easy-to-manufacture permanent magnets 1.7, 1.7 N , 1.8 used. It is particularly preferred if, between the permanent magnets 1.7, 1.7 N, a gap spaced apart by a spacer aid 4.2 is created, which is the assembly
  • a pole shoe 2.20 again has an asymmetrical shape in the head area and is alternately mounted layer by layer in an alternating position. This is represented in FIG. 6 by invisible dashed lines, which represent the underlying layer mounted in another layer.
  • the pole piece 5.10 is asymmetrically designed accordingly.
  • FIG. 10a schematically shows a quarter-view of an embodiment of a permanent magnet rotor 20.7 with a slanted construction. A slanted construction of a
  • Permanentmagnet devisrs 20.7 is known per se from the prior art. A skewing is achieved by the in the laminated core
  • Sheet metal package are provided. The one shown in Figure 7a
  • Skew direction 27 corresponds to a skew in the counterclockwise direction.
  • a skew in the counterclockwise direction corresponds to a skew in the counterclockwise direction.
  • a skew in the counterclockwise direction corresponds to a skew in the counterclockwise direction.
  • Clock display provided. Due to the intended skew can be used for aligning and mounting the laminated core no more setting mandrels, as they can not be inserted into a helically deformed hole. Instead, in the particularly preferred embodiment of the method for producing a permanent magnet rotor 20.7, a setting basket is used which has setting racks. The setting strips are arranged in the basket and run on the inside or
  • the magnetic circuit main body 21.7 at least one recess 10.10, in which engages the setting bar.
  • the pole-back anchor 2.21 has a recess 10.9, which likewise corresponds to the setting bar on the setting basket, which is not shown, however, according to the prior art.
  • the pole piece 5.11 does not require assembly aid by setting strips, but it engages with its recesses 23.8 and 23.9 in the pole anchor 2.21.
  • the permanent magnets 1.7, 1.8 are by a
  • Insulation layer in the most preferred Embodiment by a ceramic insulation layer 30, electrically insulated.
  • a ceramic insulation offers over other types of insulation, for example by a paint, the advantage that it is particularly thin and also very hard, that is insensitive to damage during assembly is. Further advantages of a ceramic
  • Insulation consists in a very high heat resistance, which maintains its insulating properties even at high operating temperatures, and in an improved
  • Figure 10b shows schematically a halved view of an embodiment of a first plane of a
  • the pole anchor 2.21 are designed with asymmetrical head and have the recess 10.9, in which the setting strips engage in the alignment and assembly.
  • Sheet stack has the magnetic circuit main body 21.7.
  • FIG. 10c schematically shows a halved view of an embodiment of a plane of a permanent magnet rotor 20.7 with a skewed structure, where n is an even number and, after a number n / 2, exactly the case of alternating layers of the different variants (head extension of FIG. 10c
  • FIG. 7c shows the layer number 399, in which the head extension of the pole back anchor 2.21 points in the clockwise direction.
  • Embodiment 15 degrees, while the final
  • FIG. 10d schematically shows a halved view of one
  • Embodiment of a plane n of a permanent magnet rotor 20.7 NN with a skewed structure is in
  • the last level the level 800
  • the level 800 wherein for clarification of the total skew both the pole anchor 2.21 of the first level and the pole anchor 2.21 NN the last level, here the level 800, are shown.
  • the degree of skew is further illustrated by the plane 29 centerline 29 and the plane 800 centerline 29 NN .
  • the recesses 10.8 are larger in alternative embodiments or designed as a slot, so that even with a skew of the laminated core this can be clamped.
  • a bolt is passed through the recess 10.8, for example, and the laminated core clamped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention a pour but de réaliser des modules de rotor excités en permanence et modifiables avec une disposition tangentielle des aimants permanents pour des hauteurs d'axe, des vitesses de rotation et des sollicitations mécaniques et électromagnétiques très différentes, qui sont simples à fabriquer, de fournir de meilleures possibilités de réduire encore les pertes et de réaliser des résistances mécaniques plus élevées du rotor par rapport à l'état de la technique et notamment de permettre la formation d'un tracé approximativement sinusoïdal du champ polaire ainsi qu'une réduction des ondes harmoniques. Sur un corps de base circulaire d'aimant (5.2) sont prévues des encoches pour des éléments de fixation pour des ancres d'espacement interpolaire amagnétiques (2.1 à 2.13), les aimants permanents (1) sont plaqués sur les côtés extérieurs du corps de base circulaire d'aimant (5.2) et sont bloqués sur le corps de base circulaire d'aimant (5.2) par des pièces polaires (5.1) spécialement formées et des ancres d'espacement interpolaire (2.1 à 2.13) retenant ces pièces polaires (5.1), les ancres d'espacement interpolaire (2.1 à 2.13), les pièces polaires (5.1) et le corps de base circulaire d'aimant (5.2) forment des zones de rainure dans lesquelles les aimants permanents (1) sont disposés de manière isolée ou non isolée. Le domaine d'application de l'invention concerne la construction de machines électriques rotatives.
EP10766234A 2009-07-29 2010-07-29 Rotor à aimants permanents Withdrawn EP2471159A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910026287 DE102009026287A1 (de) 2009-07-29 2009-07-29 Permanentmagnetläufer mit geschützt und versenkt angeordneten, tangential ausgerichteten Permanentmagneten bei radialer Ausrichtung der Magnetpole als Innenläuferausführung oder Außenläuferausführung rotierender elektrischer Maschinen und Verfahren zur Montage dieser Permanentmagnetläufer
PCT/DE2010/075070 WO2011012132A2 (fr) 2009-07-29 2010-07-29 Rotor à aimants permanents

Publications (1)

Publication Number Publication Date
EP2471159A2 true EP2471159A2 (fr) 2012-07-04

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EP10766234A Withdrawn EP2471159A2 (fr) 2009-07-29 2010-07-29 Rotor à aimants permanents

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EP (1) EP2471159A2 (fr)
DE (1) DE102009026287A1 (fr)
WO (1) WO2011012132A2 (fr)

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AT513451B1 (de) * 2012-09-17 2014-07-15 Hitzinger Gmbh Permanentmagnetischer Rotor für eine Synchronmaschine und Synchronmaschine aufweisend diesen Rotor
KR102504423B1 (ko) * 2015-05-27 2023-02-28 엘지이노텍 주식회사 로터 및 이를 포함하는 모터
EP3107192B1 (fr) * 2015-06-16 2019-11-13 Pfeiffer Vacuum GmbH Pompe à vide
DE102016114362A1 (de) * 2016-08-03 2018-02-08 Feaam Gmbh Rotor für eine elektrische Maschine sowie elektrische Maschine
DE102017205858A1 (de) * 2017-04-06 2018-04-19 Magna powertrain gmbh & co kg Rotor für eine permanenterregte Synchronmaschine und Verfahren zur Herstellung eines solchen Rotors
DE102018201591A1 (de) * 2018-02-01 2019-08-01 Baumüller Nürnberg GmbH Rotor
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DE102020128552A1 (de) 2020-10-30 2022-05-05 Bayerische Motoren Werke Aktiengesellschaft Rotor für eine permanenterregte Synchronmaschine und permanenterregte Synchronmaschine

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Publication number Publication date
WO2011012132A3 (fr) 2011-03-31
DE102009026287A1 (de) 2011-02-10
WO2011012132A2 (fr) 2011-02-03

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