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WO2014083687A1 - Système à machine électrique rotative et système de production d'énergie éolienne - Google Patents

Système à machine électrique rotative et système de production d'énergie éolienne Download PDF

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Publication number
WO2014083687A1
WO2014083687A1 PCT/JP2012/081104 JP2012081104W WO2014083687A1 WO 2014083687 A1 WO2014083687 A1 WO 2014083687A1 JP 2012081104 W JP2012081104 W JP 2012081104W WO 2014083687 A1 WO2014083687 A1 WO 2014083687A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotating electrical
electrical machine
stator
power
Prior art date
Application number
PCT/JP2012/081104
Other languages
English (en)
Japanese (ja)
Inventor
大地 川村
順弘 楠野
守 木村
雅寛 堀
佐藤　大祐
Original Assignee
株式会社日立製作所
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 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP2014549732A priority Critical patent/JP5852750B2/ja
Priority to PCT/JP2012/081104 priority patent/WO2014083687A1/fr
Publication of WO2014083687A1 publication Critical patent/WO2014083687A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/042—Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts
    • 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
    • H02K99/00—Subject matter not provided for in other groups of this subclass
    • H02K99/10—Generators
    • 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 present invention relates to a rotating electrical machine system and a wind power generation system, and in particular, is installed in a first rotating electrical machine (main generator) and a second rotating electrical machine (auxiliary generator), and rotates together with a rotor.
  • the present invention relates to a rotating electrical machine system and a wind power generation system suitable for a device including a power converter.
  • the AC excitation type rotating electrical machine is installed in a nacelle on the tower of the windmill, and it is necessary to perform regular maintenance in a limited space in the nacelle. Maintenance reduction such as was demanded.
  • Patent Document 1 As a brushless AC excitation synchronous rotating electrical machine, for example, there is one described in Patent Document 1.
  • a rotary exciter and a power converter are provided coaxially with an AC excitation synchronous generator to rectify the electric power of the power system to DC, and energize the stator of the rotary exciter. After the power is supplied to the rotor, the power converted by the power converter is supplied to the rotor of the AC excitation synchronous generator to perform the power generation operation.
  • the power converter since the power converter is attached to the rotor, the power converter rotates as the rotor rotates.
  • Patent Document 1 power can be supplied from the power system to the AC excitation synchronous generator, but the voltage of the power system is rectified by the rectifier and then supplied to the rotary exciter, so that the rectifier is installed. Therefore, electric power cannot be supplied from the AC excitation synchronous generator to the power system. Therefore, the operation range becomes narrower than that of a conventional general AC excitation synchronous generator. That is, both power supply from the power system to the generator and power supply from the generator to the power system cannot be performed.
  • the present invention has been made in view of the above-described points, and an object of the present invention is to provide a rotating electrical machine system in which the operating range is not narrowed, and the power converter can be sufficiently cooled and performance is not deteriorated. It is to provide a wind power generation system.
  • a rotating electrical machine system of the present invention has a first stator having a first stator winding and a stator core, a first rotor winding and a rotor core, A first rotating electric machine comprising a first rotor disposed on an inner diameter side of the first stator with a predetermined gap, a second stator winding and a second core having a stator core; A second rotating electrical machine comprising a second rotor having a stator, a second rotor winding, and a rotor iron core, and disposed on the inner diameter side of the second stator via a predetermined gap; A power converter that is electrically connected to the first and second rotating electrical machines and that is installed on one of the first and second rotor cores so as to rotate during rotation.
  • the first stator having the first stator winding and the stator core, the first rotor winding and the rotor core, and a predetermined gap on the inner diameter side of the first stator.
  • a first rotating electric machine composed of a first rotor, a second stator winding and a second stator having a stator core, a second rotor winding and a rotor core
  • a second rotating electrical machine comprising a second rotor disposed on the inner diameter side of the second stator via a predetermined gap, and electrically with the first and second rotating electrical machines
  • a power converter connected to and installed in any one of the first and second rotors so as to rotate during these rotations, the first and second rotor cores,
  • Each of the first and second shafts is connected to the rotary shaft via a first arm extending in the radial direction.
  • the power converter is installed on the inner diameter side of the portion extending in the axial direction of the second arm, or the first or second rotor core Is connected to the rotating shaft through a first arm extending in the radial direction, and one end is connected to the middle of the first arm, and extends in the axial direction from the connecting portion, and the first or
  • the second rotor iron core is supported, has a second arm that is bent in the middle of extending from the support portion and is connected to the rotating shaft at the other end, and extends in the axial direction of the second arm.
  • the power converter is installed on the inner diameter side of the portion. .
  • a radially extending protrusion is formed on the outer diameter side of the portion extending in the axial direction of the second arm, and the protrusion is adjacent to one of the first and second rotor windings.
  • the protrusion is a heat radiating fin, and the heat radiating fin has a shape obtained by warping a thin plate.
  • the power converter includes a power forward converter that converts alternating current to direct current and a power reverse converter that converts direct current to alternating current, and the power forward converter and the power reverse converter are alternately arranged in the circumferential direction. It is characterized by being installed in.
  • the forward power converter and the reverse power converter are alternately arranged in the axial direction.
  • a plurality of the power forward converter and the power reverse converter are installed in the radial direction.
  • the power forward converter and the power reverse converter are installed at equal intervals.
  • a door for parts replacement is formed on a side surface of the rotating electrical machine frame that houses the first and second rotating electrical machines and the power converter.
  • the wind power generation system of the present invention includes a rotor that rotates by receiving wind to achieve the above object, the rotating electrical machine system according to any one of the above that is connected to the rotor via a main shaft, and the rotation A nacelle that houses the electric system and a tower that supports the nacelle, and the first and second rotating electric machines are rotated by the rotational force of the rotor, and the first and second rotating electric machines
  • the stator winding is connected to the power system side.
  • the present invention there is an effect that the operating range is not narrowed, and the power converter can be sufficiently cooled and performance is not deteriorated.
  • Embodiment 1 of the rotating electrical machine system of the present invention show Embodiment 1 of the rotating electrical machine system of the present invention.
  • a rotating electrical machine system 100 of the present embodiment includes a main generator 1 that is a first rotating electrical machine that functions as a generator for sending generated power to an electric power system, an exciter and a generator depending on operating conditions.
  • Auxiliary generator 2, which is a second rotating electrical machine that performs the two functions, and main generator 1 and auxiliary generator 2 are electrically connected to convert an AC signal into a DC signal or convert a DC signal into an AC signal.
  • the power converter 3 is provided.
  • the main generator 1 includes a main generator stator core 4 and a three-phase main generator stator winding 6 wound in a slot (not shown) provided in the main generator stator core 4.
  • a main generator rotor 1B composed of a three-phase main generator rotor winding 7 wound in a slot (not shown).
  • the auxiliary generator 2 has a three-phase auxiliary generator wound around an auxiliary generator stator core 8 and a slot (not shown) provided in the auxiliary generator stator core 8.
  • Auxiliary generator stator 2A composed of stator winding 10, auxiliary generator rotor core 9 arranged with a predetermined gap on the inner diameter side of auxiliary generator stator core 8, and this auxiliary generator rotor core 9 includes an auxiliary generator rotor 2 ⁇ / b> B including a three-phase auxiliary generator rotor winding 11 wound in a slot (not shown) provided in 9.
  • FIG. 1 shows a state in which a rotating electrical machine system 100 according to the present embodiment is mounted on a wind power generation system.
  • the rotor 12 rotates by receiving wind, and is connected to the rotor 12 and is also connected to the main generator rotor.
  • a shaft 13 serving as a rotation axis of the iron core 5 and the auxiliary generator rotor core 9 and a speed increaser 17 are illustrated, and the power converter 3 is an example mounted on the main generator rotor core 5. (The power converter 3 may be mounted on the auxiliary generator rotor core 9).
  • the power converter 3 includes a power forward converter 3a that converts an alternating current signal into a direct current signal and a power reverse converter 3b that converts the direct current signal into an alternating current signal.
  • the power generator 3a and the power reverse converter 3b are alternately arranged in the rotation axis circumferential direction at equal intervals on the main generator rotor core 5 (the power forward converter 3a and the power reverse converter 3b).
  • the converters 3b may be arranged on the auxiliary generator rotor core 9 alternately in the circumferential direction of the rotation axis and at equal intervals).
  • the amount of current to be conducted and the number of times of switching are different, so that the amount of generated heat differs.
  • the power conversion is performed by arranging the power forward converter 3a and the power reverse converter 3b alternately in the circumferential direction of the rotation axis on the main generator rotor core 5 at equal intervals. Since the heat generated from the generator 3 is uniformly dispersed in the rotating electrical machine via the rotor core and the refrigerant, local heat stagnation in the apparatus due to the mounting arrangement of the power converter 3 is reduced. Thus, performance degradation due to heat of the power converter 3 can be suppressed.
  • the power forward converter 3a and the power reverse converter 3b are alternately arranged on the main generator rotor core 5 in the circumferential direction of the rotation axis, and the like. By disposing at intervals, the performance deterioration of the power converter 3 can be suppressed.
  • both the power supply from the power system to the generator and the power supply from the generator to the power system are possible.
  • the power forward converter and the power reverse converter are alternately arranged at equal intervals in the circumferential direction of the rotation axis, the heat generated from the power converter is uniformly distributed in the rotating electrical machine. Therefore, it is possible to obtain an effect that the power converter can be sufficiently cooled and performance is not deteriorated.
  • FIG 3 and 4 show a second embodiment of the rotating electrical machine system of the present invention.
  • the rotating electrical machine system 200 of the present embodiment shown in the figure is different from the first embodiment in the installation position of the power converter 3, and the other configuration is substantially the same as the first embodiment.
  • the second rotor is provided via the main generator arm (I) 14a, which is the first arm, in which the main generator rotor core 5, which is the first rotor core, extends in the radial direction.
  • the auxiliary generator rotor core 9, which is an iron core, is connected to the shaft 13 via an auxiliary generator arm 16, which is a first arm extending in the radial direction, and one end is connected to the middle of the main generator arm 14 a.
  • a main generator arm (II) 14b which is a second arm extending in the axial direction from the connecting portion and bent at a right angle from the middle and connected to the shaft 13 at the other end.
  • the power converter 3 is installed on the inner diameter side of the portion extending in the axial direction of the machine arm (II) 14b.
  • a radiating fin 15 of a protruding structure extending in the radial direction is formed on the outer diameter side of the portion extending in the axial direction of the main generator arm (II) 14b.
  • the main generator rotor winding 7 is formed at a position adjacent to the main generator rotor winding 7.
  • the heat radiating fin 15 has a shape in which a thin plate is distorted, and has a function of sending wind to the adjacent main generator rotor winding 7.
  • the power converter 3 includes a power forward converter 3a that converts an AC signal into a DC signal and a power reverse converter 3b that converts a DC signal into an AC signal.
  • These power forward converters 3a As shown in FIG. 4, the power inverter 3b is alternately arranged at equal intervals in the circumferential direction on the inner diameter side of the portion extending in the axial direction of the main generator arm (II) 14b.
  • the radiating fins 15 are inclined and extended in the radial direction on the outer diameter side of the portion extending in the axial direction of the main generator arm (II) 14b.
  • the power converter 3 and the radiation fin 15 are installed on the main generator arm (II) 14b of the main generator 1, but are installed on the auxiliary generator arm 16 of the auxiliary generator 2. May be.
  • the auxiliary generator arm 16 has the same structure as the main generator arm (I) 14a and the main generator arm (II) 14b described above, and the inner diameter of the auxiliary generator arm 16 that extends in the axial direction.
  • the power converter 3 is installed on the side, and the radiation fins 15 are installed on the outer diameter side.
  • the power converters 3 are alternately arranged in the circumferential direction of the rotation axis at equal intervals on the inner diameter side of the portion extending in the axial direction of the main generator arm (II) 14b,
  • the radiation fins 15 By installing the radiation fins 15 on the outer diameter side, heat generated from the power converter 3 is dissipated through the main generator arm (II) 14 b and the radiation fins 15.
  • the radiating fin 15 rotates together with the main generator arm (II) 14b, it is possible to efficiently radiate heat and by sending wind from the rotating radiating fin 15 to the main generator rotor winding 7.
  • FIG. 5 shows a third embodiment of the rotating electrical machine system of the present invention.
  • the rotating electrical machine system 300 of the present embodiment shown in the figure is an improvement of the second embodiment. That is, in this embodiment, the power converter 3a and the power reverse converter 3b installed on the inner diameter side of the portion extending in the axial direction of the main generator arm (II) 14b are alternately arranged in the axial direction, and Are arranged at equal intervals.
  • the power forward converter 3a and the power reverse converter 3b are alternately arranged in the circumferential direction of the rotating shaft on the inner diameter side of the portion extending in the axial direction of the main generator arm (II) 14b. And it arrange
  • Other configurations are the same as those of the second embodiment.
  • the power forward converters 3a and the power reverse converters 3b are alternately arranged at equal intervals in the axial direction, and alternately at equal intervals in the circumferential direction of the rotation axis.
  • FIG. 6 shows a fourth embodiment of the rotating electrical machine system of the present invention.
  • the rotating electrical machine system 400 of the present embodiment shown in the figure is an improvement of the second embodiment. That is, in this embodiment, the power forward converter 3a and the power reverse converter 3b are alternately arranged in the circumferential direction of the rotating shaft on the inner diameter side of the portion extending in the axial direction of the main generator arm (II) 14b, and so on.
  • a configuration in which a plurality of layers (two layers in this embodiment) are arranged in the radial direction is a configuration in which the heat dissipating fins 15 are respectively arranged on the outer diameter side at intervals.
  • Other configurations are the same as those of the second embodiment.
  • the same effect as that of the second embodiment can be obtained, and the power converter 3 including the power forward converter 3a and the power reverse converter 3b is mounted at a high density in the radial direction. Therefore, the apparatus can be reduced in size.
  • the outer layer in the radial direction has a larger area of the housing surface (the portion extending in the axial direction of the main generator arm (II) 14b) on which the power converter 3 is mounted, and the radiation fins 15 can be formed more, it is preferable to mount the power converter 3 having a larger calorific value on the radially outer layer.
  • FIG. 7 shows a fifth embodiment of the rotating electrical machine system of the present invention.
  • the rotating electrical machine system 500 of the present embodiment shown in the figure is an improvement of the second embodiment. That is, in this embodiment, the main generator arm (II) 14b and the auxiliary generator arm 16 in the second embodiment shown in FIG. 3 are integrated.
  • the auxiliary generator rotor core 9 is connected to the shaft 13 via the first arm 20a extending in the radial direction, and one end is connected to the middle of the first arm 20a. It has a second arm 20b that extends in the axial direction from the connecting portion, supports the main generator rotor core 5 in the middle, is bent from the middle extending from the supporting portion, and is connected to the shaft 13 at the other end.
  • the power converter 3 is installed on the inner diameter side of the portion extending in the axial direction of the second arm 20b, and the heat radiation fin 15 is installed on the outer diameter side.
  • Other configurations are the same as those of the second embodiment.
  • the same effects as those of the second embodiment can be obtained, and the first arm 20a and the second arm 20b, that is, the main generator arm and the auxiliary generator arm are integrated.
  • the number of parts can be reduced and the assembly of the apparatus can be simplified.
  • FIG. 8 shows a sixth embodiment of the rotating electrical machine system of the present invention.
  • the rotating electrical machine system 600 of the present embodiment shown in the drawing is an improvement of the fifth embodiment. That is, in the present embodiment, a part replacement window 21 is formed on the axial side wall of the rotating electrical machine frame 18 that houses the main generator, the auxiliary generator, and the power converter 3. Other configurations are the same as those of the fifth embodiment.
  • FIG. 9 shows a seventh embodiment in which the rotating electrical machine system of the present invention is applied to a wind power generation system.
  • the wind power generation system of the present embodiment includes a rotor 12 that rotates by receiving wind, and a rotating electrical machine system 23 of the present invention that is connected to the rotor 12 via a shaft 13 and a speed increaser 17.
  • the rotary electric machine system 23 includes a nacelle (not shown) that houses the tower and a tower (not shown) that supports the nacelle.
  • the main generator 1 and the auxiliary generator 2 are provided with the rotational force of the rotor 12.
  • the main generator stator winding 6 and the auxiliary generator stator winding 10 are connected to the power system 22 side.
  • the wind energy received by the rotor 12 can be converted into electric energy by the rotating electrical machine system 23 and transmitted to the power system 22.
  • circuit breaker 24 may be provided in parallel with the power converter 3. Thereby, the power converter 3 can be protected from the excessive electric power applied at the time of a system failure. Further, the present invention may be applied to a gearless system in which the speed increaser 17 is lost.
  • this invention is not limited to the above-mentioned Example, Various modifications are included.
  • the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Synchronous Machinery (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un système à machine électrique rotative ayant une plage de fonctionnement non restreinte et capable de refroidir suffisamment un convertisseur d'énergie sans que cela résulte en une dégradation des performances. Le système à machine électrique rotative selon la présente invention comprend : une première machine électrique rotative constituée d'un premier stator doté d'un premier enroulement de stator et d'un noyau de stator, et d'un premier rotor doté d'un premier enroulement de rotor et d'un noyau de rotor et disposé à proximité du diamètre intérieur du premier stator avec un entrefer prescrit entre eux ; une deuxième machine électrique rotative constituée d'un deuxième stator doté d'un deuxième enroulement de stator et d'un noyau de stator et d'un deuxième rotor doté d'un deuxième enroulement de rotor et d'un noyau de rotor et disposé à proximité du diamètre intérieur du deuxième stator avec un entrefer prescrit entre eux ; et un convertisseur d'énergie connecté électriquement aux première et deuxième machines électriques rotatives et disposé soit au niveau du noyau du premier rotor, soit au niveau du noyau du deuxième rotor de manière à tourner lorsque les noyaux des premier et deuxième rotors tournent.
PCT/JP2012/081104 2012-11-30 2012-11-30 Système à machine électrique rotative et système de production d'énergie éolienne WO2014083687A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014549732A JP5852750B2 (ja) 2012-11-30 2012-11-30 回転電機システム及び風力発電システム
PCT/JP2012/081104 WO2014083687A1 (fr) 2012-11-30 2012-11-30 Système à machine électrique rotative et système de production d'énergie éolienne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/081104 WO2014083687A1 (fr) 2012-11-30 2012-11-30 Système à machine électrique rotative et système de production d'énergie éolienne

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Cited By (1)

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JP2016116304A (ja) * 2014-12-15 2016-06-23 株式会社日立製作所 発電機システムまたは風力発電システム

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JP7299477B2 (ja) * 2019-03-27 2023-06-28 ダイキン工業株式会社 電動機システム

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WO2005046044A1 (fr) * 2003-11-06 2005-05-19 Varispeed Electric Motors Pty Ltd Generateur electrique a vitesse variable possedant deux generateurs a induction sur un arbre commun
EP2061133A2 (fr) * 2007-11-16 2009-05-20 Hitachi Ltd. Machine électrique tournante et système avec machine électrique montée dans un véhicule équipé de celle-ci
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JPS55137870U (fr) * 1979-03-23 1980-10-01
JPS5815460A (ja) * 1981-07-17 1983-01-28 Hitachi Ltd 回転電機
JPH04347566A (ja) * 1991-05-22 1992-12-02 Shindaiwa Kogyo Kk ブラシレス同期機
JP2002136191A (ja) * 2000-10-23 2002-05-10 Kobe Steel Ltd 発電電動機の二次励磁装置
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CN102168652A (zh) * 2010-02-25 2011-08-31 株式会社日立制作所 风力发电系统及其控制方法
JP2011176956A (ja) * 2010-02-25 2011-09-08 Hitachi Ltd 風力発電システムおよびその制御方法
JP2012175784A (ja) * 2011-02-21 2012-09-10 Toshiba Mitsubishi-Electric Industrial System Corp 発電システム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016116304A (ja) * 2014-12-15 2016-06-23 株式会社日立製作所 発電機システムまたは風力発電システム

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JP5852750B2 (ja) 2016-02-03

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