Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
  • H02K3/28—Layout of windings or of connections between windings
• • 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
  • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
  • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
  • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
• • 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
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/12—Machines characterised by the modularity of some components
• • 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 relates to a dynamoelectric machine having a stator, which, viewed in the circumferential direction, has a plurality of segments, which mechanically produce a stator, with a three-phase winding system embedded in slots of the stator.
• harmonics of the air-gap field can not be reduced during operation of the dynamoelectric machine.
• These harmonics are responsible, inter alia, for causing the winding to produce a comparatively large cogging torque.
• the cogging torque must be kept as low as possible.
• the winding system is designed as a single-layer break hole winding, such that the cogging torques of the dynamoelekt ⁇ cal machine are reduced,
• Coil width wherein the coil width represents the distance of the two grooves in which the forward or return conductor of a coil is located
• the reduction of the cogging torque is as ⁇ achieved among other things by that at least one segment of the stator comprises two coils of the single ⁇ Lich three-phase system U, V, W.
• the common perma ⁇ nent magnets which are offered and manufactured in cuboidal shape in large numbers - and correspondingly inexpensive, can be used.
• Such a stator with its rotor is particularly suitable for large Windkraftge ⁇ generators whose generator diameter is two, three four or even over five meters. It is in particular direct drive wind turbine generators, in which the wind turbine drives the rotor of the dynamoelectric machine directly, without any intermediate connection of a Getrie ⁇ bes would be necessary.
• a rotor 108 In a stator bore is located substantially concentrically arranged a rotor 108, which is designed in this illustration as an inner rotor and on its the air gap 114 of the wind generator 100 side facing permanent magnets 110 has.
• the poles formed by the permanent magnets 110 are either - considered in circumferential direction - einstü ⁇ one piece or composed of several individual magnets constructed. This is meets both segmented and non-segmented Roto ⁇ ren - as well as internal and external rotors. This is also applicable to external or internal permanent magnets 110.
• These permanent magnets 110 are arranged in the axial extending Ta ⁇ rule in the laminated core of the rotor 108 and are referred to as a buried permanent magnets. In the circumferential direction, only one, in particular ⁇ cuboid, permanent magnet is provided per magnetic pole 107. These magnets are beneficial ⁇ way in particular for economic reasons.
• these magnets can also be arranged on the rotor surface. Then they are by appropriate measures, bandages and / or adhesive and / or mechanical mounts to the laminated core of the rotor 108 to be ⁇ consolidate to accommodate the centrifugal forces can.
• the grooves 102 of a segment 103 of the stator 101 are either designed parallel-sided as shown, ie the groove width is constant. In a further embodiment, these grooves 102 are conical, ie in the direction of the groove bottom, the groove width increases. The flanks of the teeth are parallel. Ternative in implementation of the second Al, the cavities in the direction of the groove base are reinforced pour, or it can there explicitly cooling channels vorgese ⁇ hen be.
• the segment boundaries of the stator 101 advantageously extend within a tooth, so that a mechanical protection of the winding system 105 during transport and Mon ⁇ days is given.
• the winding system 105 in the open grooves can be additionally fixed by Nutver gleich institute.
• the number of phases is. At least individual segments 103 have only two phases of the three-phase system U, V, W.
• the stator 101 thus has 54 slots. Accordingly, the rotor 108 corresponding thereto has twenty magnetic poles 107.
• the rotor 108 is segmented in this embodiment.
• the segmented hollow body 106 forms the magnetic conclusion of the permanent magnets 110.
• the number of magnetic poles is not equal to the number of this rotor segment 115 opposite grooves. This also reduces the cogging moments.
• the segmented stator 101 as shown FIG 7 is basically provided ⁇ kept, for example, by suitable mechanical support members 121 on the housing 120th
• the rotor 108 ⁇ ser arrangement can be considered as one piece or in the circumferential direction be executed segmented.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Energy (AREA)
• Sustainable Development (AREA)
• Permanent Magnet Type Synchronous Machine (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Windings For Motors And Generators (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

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ID=47833030

Family Applications (1)

Country Status (3)

Cited By (4)

Families Citing this family (4)

Family Cites Families (6)

• 2012
  • 2012-02-22 DE DE102012202735.1A patent/DE102012202735B4/de not_active Expired - Fee Related
• 2013
  • 2013-02-18 WO PCT/EP2013/053182 patent/WO2013124239A2/fr not_active Ceased
  • 2013-02-18 EP EP13707822.6A patent/EP2805406A2/fr not_active Withdrawn

Non-Patent Citations (1)

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