CN105827085B - A kind of magneto and wind power generation plant of variable radial air gap - Google Patents

A kind of magneto and wind power generation plant of variable radial air gap Download PDF

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Publication number
CN105827085B
CN105827085B CN201610336545.9A CN201610336545A CN105827085B CN 105827085 B CN105827085 B CN 105827085B CN 201610336545 A CN201610336545 A CN 201610336545A CN 105827085 B CN105827085 B CN 105827085B
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CN
China
Prior art keywords
air gap
support shaft
fixed support
magneto
pull bar
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CN201610336545.9A
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Chinese (zh)
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CN105827085A (en
Inventor
朱广辉
夏云清
柳微舒
何娟
杨智
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Xiangtan Electric Manufacturing Co Ltd
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Xiangtan Electric Manufacturing Co Ltd
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/386Wind energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02Details
    • H02K21/021Means for mechanical adjustment of the excitation flux
    • H02K21/022Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
    • H02K21/025Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/008Arrangements for controlling electric generators for the purpose of obtaining a desired output wherein the generator is controlled by the requirements of the prime mover
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2101/00Special adaptation of control arrangements for generators
    • H02P2101/15Special adaptation of control arrangements for generators for wind-driven turbines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects

Abstract

The present invention relates to a kind of magneto of variable radial air gap, it includes shell, rotating shaft, stator winding, fixed support shaft, air gap adjusts drive mechanism, sliding block and pull bar, rotor permanent magnet is fixed in rotating shaft, at the non-protruding end of motor, fixed support shaft is fixed together with outer casing end, the center line of the fixed support shaft overlaps with shaft centerline, air gap regulation drive mechanism is movably connected in fixed support shaft, and moved axially along fixed support shaft, it is connected by the air gap regulation drive mechanism of motor side with one end of two or the pull bar of more than two, the sliding block of stator winding end of the other end of pull bar with being fixed on non-protruding end is connected, the pull bar composition umbrella-shaped structure of two or more than two is with air gap regulation drive mechanism motion.The present invention is shunk to realize the change of the radial air gap between stator winding and rotor permanent magnet by the umbrella of pull bar, so as to change the rotating speed of magneto by the change of radial air gap so as to change the output current of generator.

Description

A kind of magneto and wind power generation plant of variable radial air gap
Technical field
The present invention relates to wind power generation field, more particularly to a kind of magneto and wind-power electricity generation of variable radial air gap Device.
Background technology
The motor of adjustable air gap traditional at present mainly includes disc-type permanent magnet motor and squirrel cage motor, the adjustable disk of air gap The adjustment of formula magneto is axial air-gap, and the disc-type permanent magnet motor manufacture difficulty of this adjustment axial air-gap is big, and cost is high, no It is suitable for wind power generation field, the air gap adjustment mechanism of the also squirrel cage motor of variable-air-gap uses spring-loaded, and bullet Spring poor reliability, the spring of the squirrel cage motor air gap adjustment mechanism of variable-air-gap is easily deformed after usage time is grown, and influences gas The precision of gap adjustment, so as to influence the performance of motor.
Wind power generation plant is broadly divided into band gear-box double-fed type magneto and non-gear box direct drive permanent magnetic generates electricity The major class of machine two.The magneto design of band gear-box double-fed type is simple, and in light weight, small volume, unit cost is relatively low, employs increasing Fast gear-box makes the rotating speed of wind wheel and the rotational speed matches with gear-box double-fed type magneto, but gearbox fault rate Height, noise are big, it is necessary to which periodic maintenance, adds operation expense and mechanical loss;Non-gear box direct-drive permanent-magnet generator In order to match low speed operation wind wheel, motor pole number design is very big, generally can become ten in the 100 ultra-Left right sides, the structure of generator Divide complexity, bulky, price is high, and also needs to use current transformer, and current transformer cost is high, and control is complicated.
The content of the invention
It is an object of the invention to overcome disadvantages described above, there is provided one kind is simple in construction, cost is relatively low, reliability is high, easy The magneto and wind power generation plant for a kind of variable-air-gap safeguarded.
The technical scheme is that:A kind of magneto of variable radial air gap, it includes shell, rotating shaft, rotor Permanent magnet, stator winding, in addition to fixed support shaft, air gap regulation drive mechanism, sliding block and pull bar, rotor permanent magnet are fixed on In rotating shaft, at the non-protruding end of motor, the fixed support shaft is fixed together with outer casing end, in the fixed support shaft Heart line is overlapped with shaft centerline, and the air gap regulation drive mechanism is movably connected in fixed support shaft, and is supported along fixed Axle moves axially, and is connected by the air gap regulation drive mechanism of motor side with one end of two or the pull bar of more than two, pull bar The sliding block of stator winding end of the other end with being fixed on non-protruding end is connected, the pull bar composition umbrella knot of two or more than two Structure is with air gap regulation drive mechanism motion.
The air gap regulation drive mechanism includes motor and Worm and worm-wheel gearing, and motor connects with worm gear Connect, worm gear is connected with worm engaging, and the worm screw is fixed together with fixed support shaft, the center line of the worm screw and fixed branch The center line for supportting axle overlaps, and motor driving turbine rotation, drives air gap regulation drive mechanism to be moved axially along worm screw.
A kind of wind power generation plant, it includes wind wheel, torque rotary speed sensor, magneto, power network, the permanent magnetism hair Motor is the magneto of variable radial air gap, in addition to brake, controller, the magneto of variable radial air gap Rotating shaft is connected with brake, and the electric current that the magneto of variable radial air gap is sent is directly transmitted to power network, the brake The other end is connected with torque rotary speed sensor, and the air gap regulation of the controller and the magneto of variable radial air gap drives Mechanism is connected by signal wire, and controller sends and connect to the air gap regulation drive mechanism of the magneto of variable radial air gap Controlled instruction, the controller are connected with brake by signal wire, and controller sends instruction countershaft to brake and carried out Control for brake, the controller are also connected with torque rotary speed sensor by signal wire, and the controller receives torque rotary speed biography The instruction of sensor.
The method have the benefit that because the stator winding end at non-protruding end can adjust driving machine with air gap The linear motion of structure and shunk by the umbrella of pull bar to realize the change of the radial air gap between stator winding and rotor permanent magnet Change, so as to change the rotating speed of magneto by the change of radial air gap so as to change the output current of generator, not only Reduce gear-box and also do not need frequency converter i.e. can be achieved it is grid-connected, whole generator and wind power generation device structure simply, into This is relatively low, reliability is high, easy maintenance.
Brief description of the drawings
Fig. 1 is a kind of magneto example structure schematic diagram of variable radial air gap of the present invention;
Fig. 2 is that air gap of the embodiment of the present invention adjusts driving mechanism structure schematic diagram;
Fig. 3 is a kind of wind power generation plant example structure schematic diagram of the present invention.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
1 and accompanying drawing 2 referring to the drawings, a kind of magneto of variable radial air gap, it includes shell 2, rotating shaft 1, rotor Permanent magnet 8, stator winding 3, in addition to fixed support shaft 7, air gap regulation drive mechanism 6, sliding block 4 and pull bar 5, rotor permanent magnet 8 are fixed in rotating shaft 1, and at the non-protruding end of motor, the fixed support shaft 7 is fixed together with the end of shell 2, the fixation The center line of support shaft 7 overlaps with the center line of rotating shaft 1, and the air gap regulation drive mechanism 6 is movably connected in fixed support shaft 7 On, and moved axially along fixed support shaft 7, adjust drive mechanism 6 and the pull bar 5 of two or more than two by the air gap of motor side One end be connected, the sliding block 4 of stator winding 3 end of the other end of pull bar 5 with being fixed on non-protruding end is connected, two or two Pull bar 5 above forms umbrella-shaped structure and moved with air gap regulation drive mechanism 6.
Wherein, the air gap regulation drive mechanism 6 includes motor 6-2 and Worm and worm-wheel gearing, motor 6-2 is connected with worm gear 6-1, and worm gear 6-1 engages connection with worm screw 6-3, and the worm screw 6-3 is fixed together with fixed support shaft 7, The center line of the worm screw 6-3 is overlapped with the center line of fixed support shaft 7, and motor 6-2 driving turbines 6-1 is rotated, and is driven Air gap regulation drive mechanism moves axially along worm screw.
During work, start the motor 6-2 in air gap regulation drive mechanism 6 housing 6-4, described motor first 6-2 driving turbines 6-1 is rotated, and because worm gear 6-1 engages connection with worm screw 6-3, worm screw 6-3 is fixed on one with fixed support shaft 7 Rise and center line overlaps, it is seen that motor 6-2 will drive air gap regulation drive mechanism 6 to be relatively fixed support shaft 7 and do straight line fortune It is dynamic, while air gap regulation drive mechanism 6 is connected with one end of the pull bar 5 of two or more than two, the other end of pull bar 5 and fixation Sliding block 4 in the end of stator winding 3 at non-protruding end is connected, and the pull bar 5 of two or more than two forms umbrella-shaped structure with air gap Regulation drive mechanism 6 is moved, so the straight line that the end of stator winding 3 at non-protruding end can adjust drive mechanism 6 with air gap is transported Dynamic and by pull bar 5 umbrella is shunk to realize the change of the radial air gap between stator winding 3 and rotor permanent magnet 8.
Referring to the drawings 3, the invention further relates to a kind of wind power generation plant, it include wind wheel 9, torque rotary speed sensor 10, Magneto 12, power network 3, the magneto be variable radial air gap magneto 12, in addition to brake 11, Controller 14, the rotating shaft of the magneto 12 of variable radial air gap are connected with brake 11, the permanent magnetism hair of variable radial air gap The electric current that motor 12 is sent is directly transmitted to power network 13, and the other end of the brake 11 is connected with torque rotary speed sensor 10, institute State controller 14 to be connected by signal wire with the air gap regulation drive mechanism of the magneto 12 of variable radial air gap, controller The air gap regulation drive mechanism of the magneto 12 of 14 pairs of variable radial air gaps sends and received control instruction, the controller 14 are connected with brake 11 by signal wire, and controller 14 sends instruction countershaft to brake 11 and carries out control for brake, described Controller 14 is also connected with torque rotary speed sensor 10 by signal wire, and the controller 14 receives torque rotary speed sensor 10 Instruction.
During work, the rotating speed and dtc signal of wind wheel 9 are sent controller 14 by torque rotary speed sensor 10, and controller 14 is right The air gap regulation drive mechanism of the magneto 12 of variable radial air gap sends and received control instruction, air gap regulation driving machine The control instruction that structure 12 is sent according to controller 14, to the stator winding 3 and rotor of the magneto 12 of variable radial air gap Radial air gap between permanent magnet 8 adjusts accordingly so that the electric current energy that the magneto 12 of variable radial air gap is sent Power network 13 is directly transmitted to, completes power generation process.During braking, brake 11 receives the instruction of controller, the controller 14 and system Dynamic device 11 is connected by signal wire, and controller 14 sends instruction countershaft to brake 11 and carries out control for brake, and completion was braked Journey.
The claimed scope of the present patent application is not only limited in the embodiment.All technical sides equivalent with the present invention Case belongs to protection scope of the present invention.

Claims (2)

1. a kind of magneto of variable radial air gap, it includes shell, rotating shaft, rotor permanent magnet, stator winding, its feature It is, in addition to fixed support shaft, air gap regulation drive mechanism, sliding block and pull bar, rotor permanent magnet are fixed in rotating shaft;In electricity The non-protruding end of machine, the fixed support shaft are fixed together with outer casing end, the center line of the fixed support shaft and rotating shaft Center line is overlapped, and the air gap regulation drive mechanism is movably connected in fixed support shaft, and is moved axially along fixed support shaft, It is connected by the air gap regulation drive mechanism of motor side with one end of two or the pull bar of more than two, the other end of pull bar and fixation It is connected in the sliding block of the stator winding end at non-protruding end, the pull bar composition umbrella-shaped structure of two or more than two is adjusted with air gap Drive mechanism is moved.
A kind of 2. magneto of variable radial air gap according to claim 1, it is characterised in that the air gap regulation Drive mechanism includes motor and Worm and worm-wheel gearing, and motor is connected with worm gear, and worm gear is connected with worm engaging, The worm screw is fixed together with fixed support shaft, and the center line of the worm screw overlaps with the center line of fixed support shaft, drives Motor drives worm gear wheel, drives air gap regulation drive mechanism to be moved axially along worm screw.
CN201610336545.9A 2016-05-20 2016-05-20 A kind of magneto and wind power generation plant of variable radial air gap Active CN105827085B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610336545.9A CN105827085B (en) 2016-05-20 2016-05-20 A kind of magneto and wind power generation plant of variable radial air gap

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Application Number Priority Date Filing Date Title
CN201610336545.9A CN105827085B (en) 2016-05-20 2016-05-20 A kind of magneto and wind power generation plant of variable radial air gap

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CN105827085B true CN105827085B (en) 2018-04-03

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US10476411B2 (en) * 2017-04-20 2019-11-12 GM Global Technology Operations LLC Electric machine having continuously-variable magnetic characteristics and method of controlling the same

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JP4361805B2 (en) * 2002-03-08 2009-11-11 ピー ゼップ ローレンス Brushless permanent magnet motor or alternator with variable axial rotor / stator alignment to increase speed tolerance
US7763989B2 (en) * 2009-07-07 2010-07-27 General Electric Company Method and apparatus for controlling the tip speed of a blade of a wind turbine
IT1399511B1 (en) * 2010-04-22 2013-04-19 Wilic Sarl ELECTRIC GENERATOR FOR A VENTILATOR AND AEROGENER EQUIPPED WITH THIS ELECTRIC GENERATOR
CN104935111B (en) * 2015-07-09 2018-12-28 兰州交通大学 A kind of rotating electric machine of machinery magnetism-regulating type
CN205622454U (en) * 2016-05-20 2016-10-05 湘潭电机股份有限公司 Variable radial air gap's permanent magnet generator and wind power generation set

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Inventor after: Xia Yunqing

Inventor after: Zhu Guanghui

Inventor after: Liu Weishu

Inventor after: He Juan

Inventor after: Yang Zhi

Inventor before: Zhu Guanghui

Inventor before: Xia Yunqing

Inventor before: Liu Weishu

Inventor before: He Juan

Inventor before: Yang Zhi