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
• • 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
  • H02K1/278—Surface mounted magnets; Inset magnets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K1/00—Details of the magnetic circuit
  • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
  • H02K1/22—Rotating parts of the magnetic circuit
  • H02K1/27—Rotor cores with permanent magnets
  • H02K1/2706—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
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
  • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • 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
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49009—Dynamoelectric machine
  • Y10T29/49012—Rotor

Definitions

• the invention relates to a rotor for an electric machine, e.g. an electric generator or an electric motor, with a base body and a plurality of fixed to the base body, permanent magnets carrying support bodies.
• an electric machine e.g. an electric generator or an electric motor
• connection between the rotor base body and the support body by means of a positive connection, in which in the main body of the rotor, a groove is made in the form of a dovetail into which a formed on the support bodies dovetail-shaped pin can be introduced.
• a positive connection in which in the main body of the rotor, a groove is made in the form of a dovetail into which a formed on the support bodies dovetail-shaped pin can be introduced.
• the object of the invention is therefore to provide a rotor for an electric machine, which is easier but equally safe to assemble.
• Fig. 1 is a perspective view of a rotor according to the invention
• FIG. 2 is a detail of an axial view of the rotor according to a particularly preferred embodiment of FIG. 1;
• FIG. 3 shows a detail of an axial view during an assembly phase of the rotor from FIG. 1;
• Fig. 4 is a radial view of the rotor during another assembly phase
• FIG. 5 shows a detail of an axial view of the rotor according to an alternative embodiment shown in FIG. 2;
• FIG. 6 shows a section of an axial view of the rotor according to another alternative embodiment shown in FIG. 2.
• the basic idea of the invention is, instead of a groove to be milled in the main body of the rotor 10, to form the supporting bodies 30a, 30b of the permanent magnet 40 in such a way that the two spaced apart first support body 30a with their mutually facing flanks form a receptacle into which a second with respect to its edges complementarily formed support body 30b can be inserted, whereby in the radial direction a positive connection between the first support body 30a and second support body 30b is achieved.
• first attaching two relatively widely spaced first support body 30a to the main body 20 of the rotor 10 is that at a greater working distance between the permanent magnet 40 acting attraction and repulsion forces are minimized and the support body 30a can be handled so better. At the same time, the safety at work is increased.
• Fig. 1 shows a particularly preferred designed rotor according to the invention.
• the rotor 10 has a main body 20, on which the supporting bodies 30a, 30b carrying the permanent magnets 40 are fastened.
• the first support bodies 30a are arranged alternately with the second support bodies 30b on the circumference of the main body 20 of the rotor 10.
• the receptacle formed by the first support bodies 30a is preferably dovetail-shaped, wherein the second support body 30b itself is designed as a dovetail.
• the first support bodies 30a is preferably dovetail-shaped, wherein the second support body 30b itself is designed as a dovetail.
• Supporting body 30 a and the second support body 30 b have a spring connection, as this in
• Fig. 5 and 6 is shown.
• the spring connection can also be used as a groove and
• Spring connection may be formed, wherein preferably an element 70 is inserted into the grooves provided in the (nearly) identically designed support bodies 30a, 30b.
• the element 70 is either with the first support body 30a or with the second
• Support body 30b firmly connected.
• first and second support bodies 30a, 30b are formed with the same overlapping surface, with first and second support bodies 30a, 30b being particularly preferred identical and wherein the permanent magnets 40 are secured to the first and second bodies 30a, 30b on opposite sides.
• first support bodies 30a can also be designed to be sector-shaped in cross-section and the second support body 30b to be complementary thereto.
• the second support bodies 30b are inserted into the receptacles formed by the first support bodies 30a so that the second support bodies 30b are securely held in the receptacle and prevented by the receptacle from yielding to the attractive forces of the first support bodies 30a.
• Base body 20 of the rotor 10 introduced and fixed at a distance from each other such that a second support body 30b can be accommodated between the first support bodies 30a.
• the first support body 30a form a receptacle for the second support body 30b with their aligned flanks.
• the second support body 30b is inserted into the receptacle formed by the first support bodies 30a, wherein the flanks of the second support body 30b are complementary to the flanks of the first support body 30a, so that such a radial positive connection between the first and second support body 30a, 30b takes place , the
• the second support body 30b directly on the base body 20, for example by means of screws 50, fixed.
• a fixation of the support body 30a, 30b with the base body 20 by means of screw 50 is in particular the possibility of the first support body 30a, for example, provided on the support body 30a stud bolts (not shown), not fully tightened during assembly on the base body 20, so initially still a game remains and thereby the highest possible manufacturing tolerances in the manufacture of the support body 30a, 30b are possible.
• the second support bodies 30b Only after the second support bodies 30b have been introduced into the receptacle formed by the first support bodies 30a, can the first and the second support bodies 30a, 30b be brought into their final position by tightening the screw connections 50 without jeopardizing occupational safety.
• all the first support body 30a required for a rotor 10 may first be fastened to the main body of the rotor 10, between which the second support bodies 30b are then successively inserted and fixed.
• first and the second support bodies 30a, 30b preferably have fastening means designed as (threaded) bores, which are arranged differently, so that first support bodies 30a differ from second support bodies 30b due to different "hole patterns" Holes (not shown) may then be used to fix fasteners 50. Also, this design contributes to increased occupational safety due to a better structured operation.
• the firm tightening of the support body 30a, 30b to the main body 20 of the rotor 10 to a closely interconnected unit in addition to the above-mentioned working aspects further has the advantage that air gap losses can be minimized.
• the method according to the invention is particularly preferably carried out in such a manner that, prior to fastening the first support body 30a, at least one space holder 60 (a so-called dummy, see FIG.
• the placeholder 60 has approximately the same dimensions as the second support body 30b, but it can also be provided that the placeholder is slightly larger than the second support body 30b in order to take into account manufacturing tolerances.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Permanent Field Magnets Of Synchronous Machinery (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Manufacture Of Motors, Generators (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (11)

Families Citing this family (13)

Citations (1)

Family Cites Families (21)

• 2008
  • 2008-12-23 DE DE102008063045A patent/DE102008063045A1/de not_active Withdrawn
• 2009
  • 2009-11-05 CN CN2009801413348A patent/CN102177639A/zh active Pending
  • 2009-11-05 WO PCT/DE2009/001567 patent/WO2010072189A1/de active Application Filing
  • 2009-11-05 RU RU2011114388/07A patent/RU2486653C2/ru not_active IP Right Cessation
  • 2009-11-05 CA CA2737443A patent/CA2737443A1/en not_active Abandoned
  • 2009-11-05 AU AU2009329573A patent/AU2009329573A1/en not_active Abandoned
  • 2009-11-05 KR KR1020117007846A patent/KR101197342B1/ko not_active IP Right Cessation
  • 2009-11-05 BR BRPI0923978A patent/BRPI0923978A2/pt not_active IP Right Cessation
  • 2009-11-05 EP EP09771684A patent/EP2368307A1/de not_active Withdrawn
  • 2009-11-05 US US13/126,373 patent/US8901794B2/en not_active Expired - Fee Related
  • 2009-11-05 JP JP2011530363A patent/JP2012504933A/ja active Pending

Patent Citations (1)

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