EP2399028A2 - ANNEAU MAGNÉTIQUE& xA; - Google Patents

ANNEAU MAGNÉTIQUE& xA;

Info

Publication number
EP2399028A2
EP2399028A2 EP09755908A EP09755908A EP2399028A2 EP 2399028 A2 EP2399028 A2 EP 2399028A2 EP 09755908 A EP09755908 A EP 09755908A EP 09755908 A EP09755908 A EP 09755908A EP 2399028 A2 EP2399028 A2 EP 2399028A2
Authority
EP
European Patent Office
Prior art keywords
magnetic
magnet
guide
magnet system
ring
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Withdrawn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
EP09755908A
Other languages
German (de)
English (en)
Inventor
Klaus Bodenstein
Detlef Lange
Dieter Rupprich
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.)
NGT NEW GLOBAL TECHNOLOGY GMBH
Original Assignee
Avantis Ltd Hong Kong
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 Avantis Ltd Hong Kong filed Critical Avantis Ltd Hong Kong
Publication of EP2399028A2 publication Critical patent/EP2399028A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention is directed to a magnet system of a multi-pole generator, in particular a wind turbine or wind turbine, comprising a magnetic ring with a carrier on the outer circumference or inner circumference strung together single permanent magnets are arranged in regularly changing polarity orientation.
  • wind turbines or wind turbines of recent type are in development, in which the generator is an integral part of the Windradrotornabe and in this case an internal stator interacts with an external rotor.
  • a generator is described in DE 102 39 366 Al.
  • a plurality of permanent magnets must be arranged on the inside thereof. This is not unproblematic, especially in the case of the large dimensions of a generator of a wind energy plant or of a wind power plant.
  • the permanent magnets have a high magnetic force and must be accurately placed in the vicinity of metals. Small carelessness can lead to the fact that adjacent permanent magnets attract and then are no longer detachable from each other or together also attach to an adjacent metal, from which they are also no longer solvable.
  • EP 1 845 604 A2 For smaller motors it has been proposed in EP 1 845 604 A2 to use as a mounting aid a carrier device made of plastic in the form of a tubular carrier sleeve as a lost aid.
  • the individual permanent magnets On the outside of this carrier sleeve, the individual permanent magnets are placed separately by plastic segments and glued and then pushed together with the carrier sleeve in the return tube or the return ring of the external rotor or generator. Subsequently, the carrier sleeve is then removed mechanically by unscrewing to the surface of the permanent magnets, so that only remain between the ⁇ inzelpermanentmagneten existing plastic segments.
  • Such a method is applicable to small engines, but not to wind turbine generators that can have a diameter of several meters.
  • the excitation system of a multi-pole generator comprises a plurality of rows of annularly arranged individual permanent magnets, which are composed to reduce eddy current losses corresponding to the total axial length and thus the power of the generator to form a magnetic system to a magnetic wheel.
  • This magnetic wheel has along its circumference a plurality of magnetic segments with alternating polarity orientation, so that in the assembly position of the individual magnetic rings to the magnetic wheel homopolar magnetic segments of adjacent rows exert a repulsive force effect on each other.
  • the adjacent rows of the annularly arranged Einzelpe.mmanentmagnete have in addition due to the magnetic forces endeavor to align themselves with a stable north-south position and thus show a tendency to twist against each other.
  • the invention has for its object to provide a mounting option that allows in montagejon simple and inexpensive way to equip an external rotor or an inner rotor of a generator of a wind turbine with a variety of closely spaced individual permanent magnets.
  • this object is achieved in that the outer or the inner peripheral surface of the carrier has receiving elements on or in each of which a clip-like holding element is arranged, wherein each two spaced-apart holding elements between them a Einzelpermanentmagneten on the carrier hold on and / or set.
  • the invention thus provides, in a simple and cost-effective manner, a means of mounting single permanent magnets by which they can be mounted on the rotor, i. on the outer rotor or inner rotor, a generator of a wind turbine or wind turbine can be arranged.
  • the invention provides in principle ago that initially individual magnetic rings are produced, which are then subsequently joined together to form a magnetic wheel, wherein the magnetic wheel is then subsequently inserted into the Polradgephase the generator.
  • a clamp system in which clamp-like holding elements are inserted into the carrier, which subsequently forms the return ring of the rotor, and in each case receive a single permanent magnet and hold it against the carrier.
  • This is a simple installation option which prevents the single permanent magnets from bonding to each other or to the metal return ring or support in any position other than intended.
  • the individual permanent magnets can each be inserted in a simple manner between two Gareleniente from the side.
  • the holding elements consist for example of zinc die-casting and provide the necessary mechanical stability of the individual permanent magnets on the carrier.
  • the individual permanent magnets can be encapsulated with an adhesive or an adhesive, which then causes the necessary vibration resistance of the magnetic ring or of the individual permanent magnets arranged on a circular path.
  • an anaerobic adhesive which also enters small capillary openings, so that here a good connection between the brackets and the Einzelpermanentmagneten, but also between the Einzelpermanentmagneten and the carrier paths of a positive adhesive compound is formed.
  • a single individual permanent magnet has, for example, a length of 100 mm, whereby the axial extension of a single magnetic ring is essentially determined.
  • the magnets can be arranged from magnet ring to magnet ring relative offset from one another, so that the eddy current losses are reduced by the combination of relatively small rods and the staggered arrangement.
  • each retaining element mechanically separates adjacent individual permanent magnets from one another and prevents them from lying directly against each other.
  • adjacent holding elements are arranged at such a distance and the Einzelpermanentmagnete are dimensioned such that in each case a Einzelpermanentmagnet inserted laterally in the axial direction of the carrier in the formed between adjacent holding elements intermediate space is.
  • the Einzelpermanentmagnete should be made relatively small, it makes sense to combine each a plurality of homopolar aligned, juxtaposed individual permanent magnets to form a magnetic segment, which the invention also provides.
  • the carrier is or forms a return ring, which the invention also provides.
  • a particularly suitable material from which individual permanent magnets can be made are the rare earth metals.
  • the invention is therefore further characterized in that the Einzelpermanentmagnete are made of a rare earth metal.
  • a particularly favorable arrangement and alignment of the individual permanent magnets with respect to the magnetic wheel axis can be achieved according to another embodiment of the invention in that the receiving elements obliquely inclined running, in particular at an angle of 6 ° to 20 °, are formed.
  • the simple mounting method or simple mounting option according to the invention further characterized by the fact that individual magnetic rings assembled by stacking to the magnetic wheel become.
  • the invention is therefore further distinguished by the fact that a plurality of magnetic rings are joined together laterally in the axial direction coaxially adjacent to a magnetic wheel.
  • the carrier in particular in each of its side surfaces, at regular or irregular angular intervals along its circumference or the holding elements guide holes or
  • Guide element is inserted with a first guide portion, wherein a second guide portion of the respective
  • Guide element is inserted into a corresponding guide hole of an adjacent magnetic ring.
  • Guide elements are thus auf Anlagenbar adjacent magnetic rings and to arrange exactly aligned with each other.
  • Forming compound when pressing each other adjacent magnetic rings of an anaerobic curing adhesive Forming compound when pressing each other adjacent magnetic rings of an anaerobic curing adhesive.
  • Oxygen is extracted, leaving a high-strength
  • the invention provides in an expedient development that the guide holes or bores at all magnet rings or carriers or return rings at the same U ⁇ ifangsposition or angular position with respect to along the circumference arranged Einzelpermanentmagneten and / or magnet segments are formed.
  • the second guide section of the guide elements it is furthermore expedient for the second guide section of the guide elements to be laterally offset relative to the first guide section.
  • the invention provides in a development that the offset between the first guide portion and the second guide portion of the respective guide element is formed such that in the assembly position of the magnetic wheel, the individual permanent magnets and / or the magnetic segments of the same polarity orientation with respect to the magnetic wheel axis in the axial direction from magnetic ring to magnetic ring at an angle of 6 ° to 20 ° are arranged substantially obliquely or staggered manner.
  • the lateral offset between the first guide section and the second guide section of the guide elements can be substantially smaller than a circular ring section which is in each case swept by a magnet segment. This measure also causes a longer life and a more favorable electromechanical performance of the generator.
  • the invention further provides that the magnetic wheel is composed of a plurality of mutually stacked and formed by means of the guide elements to each other formed magnetic rings.
  • the invention also provides that the magnetic wheel by means of a shrink-adhesive connection material and / or non-positively along a circumferential
  • Receiving surface is connected to a Polradgephaseuse.
  • the receiving surface of the Polradgekoruses can both an inner circumferential surface and formed on the outside of the pole wheel
  • a magnet system with magnet segments curved in space or at an angle to the magnet system axis can also be provided by virtue of the fact that the guide holes formed in one side surface of a respective magnet ring are in the same direction as in a side surface of an adjacent magnet ring Reference to the arranged around the circumference of the magnetic rings magnetic segments are formed offset.
  • the offset between the guide holes of the two mutually adjacent magnet rings is formed such that in the assembled position of the magnet system or the magnet wheel, the magnet segments with the same polarity orientation of the individual Magnet rings with respect to the magnetic ring axis in the axial direction at an angle of 6 ° to 20 ° are arranged substantially obliquely.
  • the advantageous effect described above can also be achieved by designing the offset between the guide holes of the two magnet rings adjacent to one another such that in the assembled position of the magnet system or the magnet wheel the magnet segments with the same polarity alignment of the individual magnet rings with respect to the magnet ring axis
  • the offset between the guide holes of the two magnetic rings adjacent to each other in the circumferential direction of the magnetic rings is substantially smaller than a circular section of a respective magnet segment.
  • a return ring can be mounted on the outer circumference or the inner circumference of the respective magnet rings.
  • the magnet segments are electrically conductive, it comes in these during operation of the generator to eddy current losses.
  • the eddy current losses are higher, the larger the pole face of a single magnet segment.
  • the individual magnet segments can each have a plurality of, preferably three, single-pole aligned single permanent magnets, which are fastened by means of holding elements to and / or in a return ring of a respective magnetic ring. As a result, there are essentially no gaps between the individual magnet segments.
  • the respective single permanent magnets are made of a rare earth metal.
  • FIG. 1 is a schematic representation of a plan view of a magnetic ring
  • 2 is an enlarged view of the detail A of FIG. 1
  • FIG. 3 is a perspective schematic representation of several magnetic rings prior to assembly to a magnetic wheel
  • FIG. 5 is a schematic perspective view of a magnetic ring composed of a plurality of magnetic rings
  • Fig. 7 shows an alternative embodiment of a
  • Fig. 8 is a return ring.
  • a wind turbine or wind turbine essentially comprises a rotor with hub and rotor blades and a nacelle surrounding the generator.
  • the conversion of the mechanical power generated by means of the rotor blades into electrical power takes place, for example, by means of a multi-pole generator, preferably a synchronous generator, which is operated at the rotational speed of the rotor and accommodated in the nacelle.
  • a multi-pole generator comprises a stator or stator with windings and a rotor surrounding the stator or Rotor (external rotor) or a runner or rotor (inner rotor) surrounded by the stand.
  • an external rotor which forms a magnetic system 1 shown in Fig. 9, which comprises a plurality of magnetic rings 2, 2a - 2j, 2 ', 2a', 2b ', 2c', which are assembled into a magnetic wheel 10, which inside is installed on a receiving surface 14 in a Polradgetude 11.
  • Each magnetic ring 2, 2a-2j, 2 ', 2a', 2b ', 2c' has a plurality of individual permanent magnets 4, 4 'arranged around the circumference of the respective magnetic ring, with three individual permanent-magnet magnets 4, 4 arranged side by side and aligned in the same pole 'form a magnetic segment 3, 3'.
  • the magnet segments 3, 3 'in turn are arranged side by side with alternating polarity orientation, as can be seen from FIG.
  • the south pole S and. the north pole N is aligned in each case in the radial direction, so that alternately in the circumferential direction in each case a magnetic segment 3 with external north pole region and internal south pole region and a magnet segment 3 'with external south pole region and internal north pole region follow one another.
  • Each magnet segment 3, 3 ' in turn, consists of a plurality of individual permanent magnets 4, 4', which are arranged side by side, each having the same polarity, in order to reduce the eddy current losses, which would otherwise be very high for large pole surfaces.
  • magnetic segments 3, 3 'with a different number of individual permanent magnets 4, 4' are also conceivable.
  • the single permanent magnets 4, 4 ' are made of a rare earth metal, in particular, made of a high-permeability sintered metal powder using these metals.
  • the return ring 5a is composed of individual metal segments 16, which adjacent to one another form the annular return ring 5a.
  • the individual metal segments 16 can be connected to one another via connecting straps and welded together. In particular, these are frictionally pressed together when the yoke ring 5a is inserted with the individual permanent magnets 4, 4 'inserted into the Polradgephaseuse 11 and then compressed along the receiving surface 14 on cooling of the heated Polradgephaseuses 11, as explained below.
  • each of these groove-shaped slots 12 a is a cross-section double-T-shaped Retaining element 6 used with the function of a clip. Between each two holding elements 6, a single permanent magnet 4, 4 'is then arranged in each case and fixed by the holding elements 6 on the inner side of the return ring 5a.
  • the holding elements 6 have a very small thickness extension, so that only an extremely narrow gap exists between adjacent individual permanent magnets 4, 4 '.
  • the return ring 5a has such a thickness or thickness that no magnetic force is detectable on its outer side when applied on its inner side Einzelpermanentmagneten 4, 4 ', and thus no magnetic force acts to the outside.
  • the receiving elements 12 can, as indicated in FIG. 7 by the holding elements 6 inserted therein, be inclined slightly inclined with a pitch of 6 ° -20 °. Also, the receiving elements 12 may be formed rail-shaped.
  • the D ' dimensioning of yoke ring 5a, the magnet segments 3, 3' and the individual permanent magnets 4, 4 ' is coordinated so that uniformly distributed around the inner circumference of the yoke ring 5a around an even number of magnet segments 3, 3', wherein then each magnet segments 3, 3 'with the same or identically aligned polarity are diametrically opposed.
  • the procedure is now that between the individual holding elements 6, first the magnetic segments 3 with the same polarity orientation on the inside of the return ring 5a are arranged and then the magnetic segments 3 'are inserted with the opposite polarity only in the interstices then existing.
  • the yoke ring 5a is thin-walled and composed of individual sheet metal segments 16.
  • Fig. 9 equipped with a magnetic wheel 10 Polradgetude 11 eleven magnetic rings 2 - 2j lined up to form the magnetic wheel 10.
  • the respective adjacent magnetic rings additionally due to the magnetic forces of the magnet segments 3, 3 'with the same polarity or the same polarity orientation on the effort to align themselves to a stable north-south position, ie so far to rotate relative to each other so that each attractive Magnet segments 3, 3 'of unequal Polarticiansauscardi abut each other.
  • the magnetic rings 2, 2 ', 2a' - 2c ', 2a - 2j must be guided during their assembly to a magnetic wheel 10 and held in their relative position to each other.
  • a plurality of guide holes 7 are formed uniformly along the circumference in each return ring 5a of each magnet ring in each of the two side surfaces 8a, 8b.
  • the guide holes 7 may be formed either at regular or irregular angular intervals along the circumference in the respective side surface 8a, 8b. It is only important that in the installed state adjacent to each other arranged magnetic rings 2 formed guide holes 7 in the assembly position of the respective magnetic rings to each other corresponding to, ie aligned or with a bridged by a guide element 9 offset from each other, are aligned or alignable.
  • a respective guide hole 7, which may also be a blind bore in the assembly of the magnetic wheel 10 is in each case a rod-shaped or rod-shaped guide member 9 is inserted with its first guide portion 9a.
  • a second guide section 9b of the guide element 9 then protrudes this guide hole 7 of the magnetic ring 2 and serves to guide a Kirstapelnden on the respective magnetic ring further magnetic ring.
  • the second guide portion 9b is inserted into a guide hole 7 of the magnet ring to be stacked, for example the magnet ring 2a, so that the magnetic ring 2a to be stacked can be pressed against the magnet ring 2 without the two magnetic forces acting as a result Magnet rings 2, 2a to each other.
  • the attachment of the mutually adjacent magnetic rings 2, 2 ', 2a' - 2c ', 2a - 2j takes place by means of a material connection to the corresponding side surfaces 8a, 8b, which include the side surfaces of the return ring 5a and the individual permanent magnets 4, 4'.
  • at least one of the adjoining side surfaces 8a or 8b of a magnetic ring is coated with an anaerobic adhesive before the stacking of the individual magnetic rings, which forms the integral connection to the applied magnetic ring 2, 2 '.
  • the adhesive is an anaerobic adhesive in the form of a one-component adhesive that cures under oxygen exclusion.
  • the hardener component contained in the adhesive remains inactive as long as it is in contact with the oxygen in the air.
  • the curing takes place very rapidly, especially with simultaneous metal contact. Due to the capillary action of the liquid adhesive even the smallest gaps in the joint area are filled.
  • the cured adhesive is then anchored in the surface roughness of the side surfaces 8a, 8b of the magnet rings which are to be connected to one another.
  • the curing process is initiated by the contact of the adhesive with the metal surfaces of the two side surfaces 8a, 8b of the mutually adjacent metal rings, so that the metal surfaces thus act as a catalyst.
  • an activator on at least one of the two adjacently disposed side surfaces 8a, 8b before coating with the anaerobically hardening adhesive the magnetic rings to be connected are applied.
  • the application of an activator is recommended because such passive materials have little or no catalytic effect necessary for curing the anaerobic adhesive. Even with metals with high passive properties, such as chrome and stainless steel, it is advisable to use an activator to avoid false bonding.
  • An adhesive bond of this kind additionally seals the connection point against corrosive media.
  • such an anaerobic adhesive has good resistance to mechanical vibration and good resistance to dynamic fatigue life.
  • the guide holes 7 formed in the side surfaces 8a, 8b of a respective magnetic ring 2, 2 ', 2a-2j, 2a'-2c' are at the same initial position with respect to the magnet rings around the circumference of a magnetic ring Magnet segments 3, 3 'formed.
  • a magnet wheel 10 layered or stacked from a plurality of magnetic rings is formed with magnetic elements 3, 3 'arranged parallel to the magnetic ring axis or magnetic wheel axis or magnetic system axis, wherein magnetic segments of the same polarity orientation are lined up in line.
  • the Halteele ' ments 6 thus form a from Einzelpermanentmagnet 4, 4' to Einzelpermanentmagnet 4, 4 'abutting magnetic rings straight and parallel to the Magnetradlteilsachse extending line, as for a consisting of eleven magnetic rings 2 - 2j magnetic wheel 10 of the magnetic system 1 in FIG 9 is shown.
  • the second guide section 9b adjoins the first guide section 9a of the respective guide element 9 is formed laterally offset in the circumferential direction of the respective magnetic rings.
  • Such a guide element 9 is shown in Fig. 4.
  • the offset between the first guide portion 9a and the second guide portion 9b of the guide member 9 is formed such that in the assembly position of a magnetic wheel 10, the magnetic segments 3, 3 'and / or the Einzelpermanentmagnete 4, 4' of the individual Magnetri.nge in the direction of the magnetic ring axis in the axial direction from magnet ring to magnet ring are offset from one another in each case.
  • the offset between the first guide portion 9a and the second guide portion 9b of the respective guide member 9 may be formed such that in the assembly position of the magnetic wheel 10, the magnet segments 3, 3 'of the same polarity alignment of the individual magnet rings with respect to the magnet ring axis in the axial direction Staggered arranged staggered.
  • the orientation of the receiving elements 12 determines this.
  • the offset between the first guide section 9a and the second guide section 9b of the guide element 9 in the circumferential direction of the magnet rings may in this case be substantially smaller than a circular section of a respective magnet segment 3.
  • the offset between the guide holes 7 in the mutually facing side surfaces 8a, 8b adjacent magnetic rings may in turn be designed such that in the assembly position of the magnetic wheel 10, the magnetic segments 3, 3 'with the same polarity orientation of magnetic ring to magnetic ring with respect to the magnetic ring axis in the axial direction are arranged at an angle of 6 ° to 20 ° substantially obliquely.
  • the offset between the guide holes 7 each adjacent magnetic rings is formed such that in the assembled position of the magnetic wheel 10, the magnet segments 3, 3 'the same polarity alignment of magnetic ring to magnetic ring with respect to the magnetic ring axis in the axial direction stepped manner are arranged.
  • the offset between the guide holes 7 of adjacent magnetic rings in the circumferential direction of the magnetic rings may be substantially smaller than a circular portion of a respective magnet segment.
  • the relative position of the Einzelpermanentmagnete 4, 4 'to each other from magnet ring to magnet ring by the corresponding design of the guide holes 7 in the respective side surfaces 8a, 8b and the design of the guide elements 9 set variable.
  • the individual permanent magnets 4, 4 'of magnetic ring to magnetic ring to be arranged offset from one another in each case and for the retaining elements 6 likewise to have a step-shaped offset from magnetic ring to magnetic ring.
  • the individual magnet segments 4, 4 'linearly arranged in a row to each other, so that the juxtaposed holding elements 6 then form a continuous line in the magnetic wheel 10, the obliquely inclined, with an angle of 6 ° - 20 ° or else straight, that are aligned parallel to the magnetic wheel axis passing through the Magnetradachse.
  • the embodiments described above relate to a magnet system 1 of an external rotor.
  • the invention provides a magnetic rotor 1 of the external rotor type comprising a magnet wheel 13 which is composed of individual magnet rings 2, 2 ', 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 2a'. - 2c 'with several magnetized magnet segments 3, 3 'of alternating polarity built-up magnetic wheel 10 and which can be used in a generator of a wind turbine.
  • the magnet wheel housing 11 with magnet wheel 10 inserted therein comprises magnetic system 1 thus consisting of individual, possibly electrically isolated magnet rings due to the connection by means of an adhesive, which are stacked according to the axial total length of the magnetic wheel 10 into a package and a thin-walled yoke ring 5a for guiding form the magnetic field lines and for shielding to the outside.
  • the package also receives its mechanical strength by means of brackets or struts or guide elements 9, which are preferably welded in magnetically unloaded zones.
  • the ring-shaped magnetic wheel 10 consisting of a plurality of magnetic rings is connected to the pole wheel housing 11 shown in FIG. 6 in the manufacture of the pole wheel 13, wherein the magnetic wheel 10 is mounted inside the pole wheel housing 11.
  • the Polradgefelduse 11 may consist of a magnetically ineffective material for reasons of weight saving.
  • a receiving surface 14 is formed in the inner periphery of the Polradgeprocessuses 11.
  • the receiving surface 14 may for example be a minimum depression or groove, which corresponds to the geometric dimension of the magnetic wheel 10 to Training a connection with the Polradgepatuse 11 is adjusted.
  • the Polradgepiece 11 is slightly heated to the Polradgephaseuse 11 and the magnetic wheel 10 can add.
  • the Polradgeprocessuse 11 is heated to a temperature at which the
  • the magnetic wheel 10 is then arranged in or on the receiving surface 14 formed in the inner circumferential surface of the pole wheel housing 11.
  • the pole wheel housing 11 is cooled or the pole wheel housing is allowed to cool, so that the pole wheel housing 11 is shrunk onto the magnet wheel 10.
  • Shrinking is thus based on the principle of thermal expansion, in which the two parts to be joined are not accurate, but the Polradgepatuse 11 slightly too small or the magnet wheel 10 are slightly too large, so that both parts at normal temperature, ie usually room - or ambient temperature, can not be connected.
  • the heated object expands and then shrinks again on cooling.
  • the pole wheel housing 11 shrinks during its cooling and is pressed onto the magnet wheel 10.
  • the cooling of the pole wheel housing 11 can take place, for example, at ambient temperature.
  • the outer peripheral surface of the magnetic wheel 10, ie the outer side of the return ring 5a, is coated with an adhesive 15.
  • the receiving surface 14 of the Polradgeophuses 11 may be coated with an adhesive.
  • both the outer peripheral surface of the magnetic wheel 10 and the receiving surface 4 of the Polradgeophuses 11 with an adhesive.
  • the coating of the outer circumferential surface of the magnetic wheel 10 or the receiving surface 4 of the pole wheel housing 11 or both surfaces together can be carried out at various times during the implementation of the joining process for connecting these two components. For example, the coating may be carried out prior to heating the pole wheel housing 11, before arranging the magnet wheel 10 or before cooling the pole wheel housing 11.
  • the adhesive used in the coating is also an anaerobic adhesive in the form of a one-component adhesive which cures at room temperature with exclusion of oxygen.
  • the hardener component contained in the liquid adhesive remains inactive as long as it is in contact with the oxygen in the air.
  • the Polradgefelduse 11 from a non-metallic material ie a first passive material for bonding
  • a first passive material for bonding consists of an activator can be applied to the receiving surface 14 of the Polradgephaseuses 11 before coating with the 'anaerobic curing adhesive 15.
  • the outer peripheral surface of the magnetic wheel 10 has a layer of non-metallic material, this surface can also be coated with an activator.
  • the application of an activator is recommended because passive materials have little or no catalytic effect, but this is necessary for the curing of the anaerobic adhesive. Even with metals with high passive properties, such as chrome and stainless steel, it is advisable to use an activator to avoid false bonding.
  • An adhesive bond of this type additionally seals the connection point of the pole wheel housing 11 and the magnetic wheel 10 against corrosive media.
  • such an anaerobic curing adhesive 15 has good resistance to mechanical vibration and good resistance to dynamic fatigue life.
  • the method may have an additional step, in which prior to arranging the magnetic wheel 10, the outer peripheral surface of the magnetic wheel 10, ie the outer surface of the return ring 5a, or the receiving surface 14 of the Polradgephinuses 11 by sand or shot blasting is roughened. It is also conceivable, both surfaces by means Sanding or sandblasting. As a result of this measure, the adhesion of the adhesive 15 and the load capacity of the connection formed between the pole wheel housing 11 and the metal wheel formed from return rings 5a improve.
  • the above-described method thus combines, upon cooling of the pole wheel housing 11, a bonding operation and a pressing operation, which together and at the same time exert their effect for producing the connection of the pole wheel housing 11 and the magnetic wheel 10.
  • the pole wheel housing 11 cools, it encloses the magnetic wheel 10 with a slight pressure in the manner of a frictional connection, the adhesive connection causing a material closure.
  • a recessed formed with a side edge receiving surface 14 also contribute positively locking shares.
  • the surface between the outer periphery of the magnetic wheel 10 and the receiving surface 14 of the Polradgephinuses 11 adhesive 15 is removed from the contact with oxygen, whereby it can harden and a high-strength compound in the form of a Stoff gleiches in the joint.
  • the individual permanent magnets 4, 4 'and the individual magnet segments 3, 3' of the magnet wheel 10 are pressed against one another and / or against the retaining elements 6.
  • the individual metal segments 16 of the carrier 5 are pressed or pressed against each other. All these elements thus possibly additionally form a connection with one another in the manner of a frictional connection.
  • a method for producing a pole wheel 13 of the external rotor type by means of a "shrink-bonding connection", the material-locking and frictional connections between the pole wheel housing 11 and the magnetic wheel 10 and between the individual magnet segments 3, 3 'and / or the individual permanent magnets 4, 4 'and the holding elements 6 of the magnet wheel 10.
  • a "shrink-bonding connection” By means of the "shrink-bonding connection", there is a clear improvement against occurring shearing forces and bending moments, whereby the connected components are connected almost inseparably over the entire length.
  • a pole wheel 13 of the external rotor type having a magnetic wheel 10 having a plurality of magnetized magnet segments 3, 3 'of alternating polarity orientation and a pole wheel housing 11 manufactured according to this method can be used in a generator of a wind energy plant.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Wind Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un système magnétique (1) d'une génératrice multipolaire, en particulier d'éolienne, qui comprend un anneau magnétique (2, 2', 2a' - 2c', 2a - 2j) muni d'un support (5) à la périphérie extérieure ou intérieure duquel sont alignés des aimants permanents individuels (4, 4') avec un changement régulier de l'orientation polaire. L'invention vise à fournir un système qui permet, de manière simple et économique en termes de montage, d'équiper un rotor extérieur ou intérieur d'une génératrice d'éolienne d'une pluralité d'aimants permanents individuels placés à proximité les uns des autres. A cet effet, la surface périphérique extérieure ou intérieure du support (5) présente des éléments récepteurs (12) dans ou sur lesquels est respectivement placé un élément de retenue (6) en forme de pince, deux éléments de retenue (6) placés à distance l'un de l'autre maintenant et/ou fixant respectivement entre eux un aimant permanent individuel (4, 4') sur le support (5).
EP09755908A 2009-01-23 2009-11-19 ANNEAU MAGNÉTIQUE& xA; Withdrawn EP2399028A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009005956A DE102009005956A1 (de) 2009-01-23 2009-01-23 Magnetring
PCT/EP2009/065447 WO2010083905A2 (fr) 2009-01-23 2009-11-19 Anneau magnétique

Publications (1)

Publication Number Publication Date
EP2399028A2 true EP2399028A2 (fr) 2011-12-28

Family

ID=42282558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09755908A Withdrawn EP2399028A2 (fr) 2009-01-23 2009-11-19 ANNEAU MAGNÉTIQUE& xA;

Country Status (7)

Country Link
US (1) US20120032547A1 (fr)
EP (1) EP2399028A2 (fr)
KR (1) KR20110128177A (fr)
CN (1) CN102625879B (fr)
DE (1) DE102009005956A1 (fr)
RU (1) RU2011135718A (fr)
WO (1) WO2010083905A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2508749T3 (da) * 2011-04-04 2013-12-16 Siemens Ag Fremgangsmåde til montering af en elektrisk maskine
EP3026790B8 (fr) * 2012-08-31 2020-07-22 Lappeenranta-Lahti University of Technology LUT Machine électrique
CN106357075A (zh) * 2016-10-18 2017-01-25 安徽机电职业技术学院 场调制永磁风力发电机
EP3909114B1 (fr) * 2019-01-10 2024-09-18 Vestas Wind Systems A/S Ensemble rotor de générateur
CN113168178B (zh) * 2019-02-01 2024-07-12 苏州宝时得电动工具有限公司 自移动设备和磁性边界系统
JP7293701B2 (ja) * 2019-02-08 2023-06-20 株式会社デンソー 回転電機
CN116426893B (zh) * 2023-06-13 2023-08-18 上海陛通半导体能源科技股份有限公司 磁控溅射设备及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020067092A1 (en) * 2000-12-04 2002-06-06 Crapo Alan D. Magnetization of permanent magnet rotors with offset rotor sections

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474536A (en) * 1945-02-17 1949-06-28 John E Lundegard Variable hydraulic pump or motor
US2435911A (en) * 1945-10-29 1948-02-10 Gen Ind Co Small fractional horsepower shaded pole synchronous motor
JPS5541192A (en) * 1979-08-29 1980-03-22 Matsushita Electric Ind Co Ltd Method of manufacturing motor
US4678954A (en) * 1986-03-05 1987-07-07 Kabushiki Kaisha Toshiba Rotor with permanent magnets having thermal expansion gaps
US5111094A (en) * 1991-09-03 1992-05-05 General Motors Corporation Permanent magnet rotor having magnet retention apparatus
JPH0638414A (ja) * 1992-07-14 1994-02-10 Daido Steel Co Ltd リング状磁石をそなえたロータ
US6037696A (en) * 1993-12-29 2000-03-14 Samot Engineering (1992) Ltd. Permanent magnet axial air gap electric machine
US5584119A (en) * 1994-11-07 1996-12-17 General Electric Company Apparatus for setting skew angle
US6211589B1 (en) * 1995-06-07 2001-04-03 The Boeing Company Magnetic systems for energy storage flywheels
DE19610754C1 (de) * 1996-03-19 1997-03-27 Voith Turbo Kg Rotor für eine elektrische Maschine, insbesondere Transversalflußmaschine
US5793136A (en) * 1996-06-05 1998-08-11 Redzic; Sabid Differential motor/generator apparatus
JP2001190050A (ja) * 1999-04-01 2001-07-10 Asmo Co Ltd 回転磁界型電動機
JP2003222124A (ja) * 1999-07-14 2003-08-08 Sumitomo Electric Ind Ltd スピンドルモータ
CN2427927Y (zh) * 2000-06-16 2001-04-25 胜喆工业股份有限公司 具磁极互反呈间隔排列磁铁旋转磁极的发电机
DE60233129D1 (en) * 2001-04-19 2009-09-10 Bell Helicopter Textron Inc Rotorsystemschwingungsdämpfer
ZA200202936B (en) * 2001-05-04 2002-11-22 Inventio Ag Permanent magnet electric machine.
US6710491B2 (en) * 2001-10-30 2004-03-23 Tonic Fitness Technology, Inc. Roller device with dynamic function
DE10236609A1 (de) * 2002-06-22 2004-01-08 Zf Friedrichshafen Ag Synchronmaschine und Verfahren zur Montage der Synchronmaschine
DE10239366A1 (de) 2002-08-28 2004-03-11 Klinger, Friedrich, Prof. Dr.-Ing. Windenergieanlage
DE10240580A1 (de) * 2002-08-29 2004-03-11 Claas Industrietechnik Gmbh Rotor eines elektrischen Antriebs und Verfahren zu seiner Herstellung
ES2233146B1 (es) * 2002-11-21 2006-06-01 Manuel Torres Martinez Alternador multipolar para aerogeneradores.
JP3954018B2 (ja) * 2003-01-15 2007-08-08 本田技研工業株式会社 ハイブリッド車両用電動機
DE602004025560D1 (de) * 2003-04-26 2010-04-01 Camcon Ltd Elektromagnetische ventilbetätigungsvorrichtung
DE10324664A1 (de) 2003-05-30 2004-12-30 Siemens Ag Rollen und Rollenmotoren
US6867524B2 (en) * 2003-06-04 2005-03-15 Ford Global Technologies, Llc Rotor skew methods for permanent magnet motors
JP4041443B2 (ja) * 2003-09-16 2008-01-30 本田技研工業株式会社 クローポール型モータのステータ
US7271519B2 (en) * 2003-10-02 2007-09-18 Lg Electronics Inc. Laminated body of motor and manufacturing method thereof
US7728481B2 (en) * 2003-10-02 2010-06-01 Lg Electronics Inc. Laminated body of motor and manufacturing method thereof
JP4311182B2 (ja) * 2003-12-08 2009-08-12 日産自動車株式会社 回転電機の回転子
US7157827B2 (en) * 2004-09-21 2007-01-02 A. O. Smith Corporation Spoke permanent magnet rotor
DE502005010177D1 (de) * 2005-07-29 2010-10-14 Siemens Ag Permanentmagnetrotor für eine bürstenlose elektrische Maschine
US20070080597A1 (en) * 2005-10-06 2007-04-12 Asmo Co., Ltd. Motor and manufacturing method thereof
US7573168B2 (en) * 2005-10-24 2009-08-11 General Electric Company Method and apparatus for assembling a permanent magnet pole assembly
US7626295B2 (en) * 2005-11-01 2009-12-01 Tokyo Parts Industrial Co., Ltd Flat eccentric rotor equipped with a fan and flat vibration motor equipped with a fan comprising same rotor
ES2354340T5 (es) * 2007-03-23 2017-10-20 Vestas Wind Systems A/S Método para establecer un generador de turbina eólica con uno o más rotores de imán permanente (PM), góndola de turbina eólica y turbina eólica
JP5123008B2 (ja) * 2008-03-05 2013-01-16 株式会社ミツバ ブラシレスモータ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020067092A1 (en) * 2000-12-04 2002-06-06 Crapo Alan D. Magnetization of permanent magnet rotors with offset rotor sections

Also Published As

Publication number Publication date
KR20110128177A (ko) 2011-11-28
WO2010083905A2 (fr) 2010-07-29
CN102625879B (zh) 2014-07-09
DE102009005956A1 (de) 2010-07-29
WO2010083905A3 (fr) 2010-11-25
RU2011135718A (ru) 2013-02-27
US20120032547A1 (en) 2012-02-09
CN102625879A (zh) 2012-08-01

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