WO2014155578A1 - Génératrice de turbine éolienne - Google Patents

Génératrice de turbine éolienne Download PDF

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Publication number
WO2014155578A1
WO2014155578A1 PCT/JP2013/059074 JP2013059074W WO2014155578A1 WO 2014155578 A1 WO2014155578 A1 WO 2014155578A1 JP 2013059074 W JP2013059074 W JP 2013059074W WO 2014155578 A1 WO2014155578 A1 WO 2014155578A1
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WO
WIPO (PCT)
Prior art keywords
generator
power generation
power
generation system
wind
Prior art date
Application number
PCT/JP2013/059074
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English (en)
Japanese (ja)
Inventor
智裕 沼尻
Original Assignee
三菱重工業株式会社
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 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to PCT/JP2013/059074 priority Critical patent/WO2014155578A1/fr
Publication of WO2014155578A1 publication Critical patent/WO2014155578A1/fr

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    • 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
    • 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
    • F03D15/00—Transmission of mechanical power
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/40—Use of a multiplicity of similar 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 present invention relates to a wind turbine generator that converts wind power into electric power, and more particularly to a technique for improving the redundancy of the wind turbine generator.
  • a wind turbine generator includes a generator drive system (a power generation system) configured to generate power by rotating a rotor head with wind force received by a wind turbine rotor blade and driving the generator with this rotational force.
  • the wind turbine generator includes an induction generator windmill using an induction generator and a synchronous generator windmill using a synchronous generator (direct connection type).
  • FIG. 5 is a diagram illustrating a conventional schematic configuration example of a generator drive system of an induction generator wind turbine that employs an induction generator.
  • a main shaft 12 is rotated integrally with a hub 11 of a rotor head to which three wind turbine rotor blades are attached, and the speed is increased via a speed increaser 13 connected to the main shaft 12.
  • the induction generator 14 is driven by the rotational speed.
  • the electric power generated by the induction generator 14 is transmitted through the power converter 15. Note that all of the components of the speed increaser 13, the induction generator 14, and the power conversion device 15 constituting the generator drive system 10 are a single system.
  • FIG. 6 is a diagram illustrating a conventional schematic configuration example of a generator drive system of a synchronous generator wind turbine that employs a synchronous generator.
  • the generator drive system 10A shown in the drawing has the same configuration as the induction generator windmill described above up to the main shaft 12 that rotates integrally with the hub 11 of the rotor head.
  • the generator drive system 10A of the synchronous generator wind turbine does not have the speed increaser 13 and drives the synchronous generator 14A directly connected to the main shaft 12 to generate power.
  • the electric power generated by the synchronous generator 14A is transmitted through the power converter 15A.
  • any component is a single system.
  • the generator drive system 10 ′ shown in FIG. 7 is a redundant configuration by making the electrical elements of the above-described power generation drive system 10 multi.
  • a multi-system induction generator 14 ′ and power conversion device 15 ′ in which a plurality of induction generators 14 and power conversion devices 15 of the power generation drive system 10 are used are used.
  • the induction generator 14 'used in the configuration shown in the figure has a structure including N induction generators Gn1 to GnN in which an electrical part is divided into N inside a single casing, and each induction generator Gn1.
  • a power conversion device 15 'composed of In1 to InN is provided.
  • a generator drive system 10 ′′ shown in FIG. 8 is obtained by making the speed-up gear 13 of the above-described power generation drive system 10 multi-redundant. More specifically, the generator drive system 10 ′′ employs a speed-up gear 13 ′′ that is multi-divided by dividing the high-speed side into N output shafts S1 to SN. Redundancy is achieved by connecting multiple induction generators Ge1 to GeN and electrical elements corresponding to each output shaft.
  • Patent Document 1 discloses a wind power generator that enables high-efficiency power generation by disposing a small-diameter synchronous generator in an excess space in the central portion of the synchronous generator.
  • the above-described conventional wind power generator is a device in which electrical elements of the generator drive system are made redundant, for example, by multiplying the induction generator 14 and the power conversion device 15.
  • the current situation is that no redundancy has been made in response to troubles in the speedometer.
  • the speed increaser 13 ′′ shown in FIG. 8 the output shaft is divided into multiple units, and the speed increaser itself is a single device, so there is a problem at one point of the speed increaser 13 ′′. If this happens, all functions of the generator drive system will be lost.
  • the conventional redundancy is limited to the electrical elements of the generator drive system, and the system configuration cannot cope with trouble even in the machine side element that is not made redundant such as a gearbox. Therefore, a large cost increase that is not commensurate with redundancy is expected.
  • the machine-side elements are also made redundant generator drive systems to further improve the redundancy of the generator drive system and to generate power accompanying an increase in size. It is desirable to solve various problems related to the procurement of component equipment for machine drive systems.
  • the present invention has been made in view of the above circumstances, and the object of the present invention is to further improve the redundancy of the generator drive system, and to generate the generator drive system element device as the size increases. The purpose is to provide a wind turbine generator that solves various problems related to procurement.
  • the present invention employs the following means in order to solve the above problems.
  • the wind turbine generator according to the present invention is a wind turbine generator including a generator drive system that converts wind power received by a plurality of wind turbine rotor blades attached to a hub into rotational force to drive the generator,
  • the generator drive system generates power by dividing the output of the low-speed shaft rotating together with the hub into a plurality of power generation systems.
  • the generator drive system that converts wind power into rotational force to drive the generator divides the output of the low-speed shaft that rotates with the hub into a plurality of power generation systems to generate power. Therefore, the electrical elements and machine-side elements that make up the power generation system after the hub that rotates at a low speed (from the hub to the generator side) can generate power independently even if trouble occurs in other systems. Form multiple possible power generation systems. Therefore, the power generation system components after the hub have been made redundant in order to maintain the power generation function of the power generation system that remains after the trouble, in case any trouble occurs in any power generation system. Furthermore, it is possible to reduce the size of the component devices of each power generation system. In this case, it is desirable to divide the power generation system of the generator drive system into two systems after the hub in view of excessive complexity in structure and cost.
  • the power generation system is divided into a gear type power generation system that generates power by increasing the rotational speed of the low speed shaft, and a gearless power generation system that generates power at the rotational speed of the low speed shaft,
  • a hydraulic power generation system that supplies hydraulic pressure of a hydraulic pump driven by the rotation of the low-speed shaft to the hydraulic motor and generates power by the driving force of the hydraulic motor driven by the hydraulic pressure, and the rotation speed of the low-speed shaft
  • a gearless power generation system that generates electric power at a speed
  • a gear-type power generation system that generates power by increasing the rotational speed of the low-speed shaft
  • a hydraulic power generation system that generates power using the driving force of the hydraulic motor driven by the hydraulic pressure.
  • the output of the low-speed shaft that rotates together with the hub is divided into a plurality of power generation systems to generate power. Therefore, the generator drive system in which both the electrical elements and the machine side elements are made redundant become. As a result, since the redundancy of the generator drive system is further improved, the remarkable effect of improving the reliability of the power generation continuation by the wind power generator can be obtained. Further, by dividing the generator drive system into a plurality of power generation systems, it becomes possible to reduce the size of the component devices of each power generation system, and accordingly, the component devices of the generator drive system accompanying the increase in the size of the wind power generator Problems related to procurement can also be solved.
  • FIG. 1 It is a figure which shows the structural example of an electric power generation drive system about the wind power generator which concerns on one Embodiment of this invention. It is a side view which shows the outline
  • the wind power generator 1 shown in FIG. 4 rotates around a substantially horizontal rotation axis, with a column (also referred to as a “tower”) 2 standing on a foundation 6, a nacelle 3 installed at the upper end of the column 2, and the like. And a rotor head 4 that is supported by the nacelle 3.
  • a plurality of (for example, three) wind turbine rotor blades 5 are attached to the rotor head 4 in a radial pattern around the rotation axis. As a result, the force of wind striking the wind turbine rotor blade 5 from the direction of the rotation axis of the rotor head 4 is converted into power for rotating the rotor head 4 around the rotation axis.
  • the wind power generator 1 described above includes, for example, the generator drive system 20 of the embodiment shown in FIG.
  • the generator drive system 20 is divided into a gear type power generation system 20G that generates power by increasing the number of rotations of a low speed shaft that rotates at a low speed together with the rotor head 4, and a gearless power generation system 20L that generates power at the number of rotations of the low speed shaft. ing.
  • the main shaft 22 of the low-speed shaft rotates integrally with the hub 21 of the rotor head 4 to which the wind turbine rotor blades 5 are attached, and the speed is increased through a speed increaser 23 connected to the main shaft 22.
  • the induction generator 24 is driven at a high rotational speed.
  • the electric power generated by the induction generator 24 is adjusted to a desired frequency, phase, and the like by a power converter 25 such as an inverter / converter, and is transmitted as a stable output with small fluctuations in voltage and current.
  • the gearless power generation system 20 ⁇ / b> L includes a synchronous generator 30.
  • the synchronous generator 30 has a ring-shaped rotor 31 attached to the outer peripheral portion on the hub 21 side that rotates together with the rotor head 4, and supports the speed increaser 23, the induction generator 24, and the like.
  • a stator 32 having a ring shape slightly larger in diameter than the rotor 31 is fixedly installed on the nacelle base plate 3a. Therefore, when the rotor head 4 rotates, the rotor 31 connected to the hub 21 via a flange or the like rotates around the inside of the stator 32 to generate electric power. Similar to the induction motor 24, the electric power generated by the synchronous generator 30 is adjusted to a desired frequency, phase, and the like by the power conversion device 33, and is transmitted as a stable output with small fluctuations in voltage and current.
  • the generator drive system 20 that generates power by converting wind power into rotational force generates power at a high rotational speed obtained by increasing the rotational speed of the main shaft 22.
  • the system is divided into two systems, that is, a system 20G and a gearless power generation system 20L that generates power at a low speed of the main shaft 22. That is, in the generator drive system 20 of the present embodiment, the output of the main shaft 22 is divided and used for driving the speed increaser 23 and the periodic generator 30, so the output of the main shaft 22 that rotates together with the hub 21 is used as a gear. It is possible to generate power that is used by being divided into two systems of a power generation system 20G and a gearless power generation system 20L.
  • the generator drive system 20 includes the gear-type power generation system 20 ⁇ / b> G and the gearless power generation system 20 ⁇ / b> L on the induction generator 24 and the periodic generator 30 side after the low-speed rotating hub 21, that is, the low-speed rotating hub 21.
  • the mechanical element and the machine side element are made redundant, and two power generation systems capable of generating power independently are provided. Therefore, even if a trouble occurs in one of the gear type power generation system 20G or the gearless power generation system 20L, it is possible to continue the power generation by the other power generation system capable of generating power independently if the hub 21 is rotating. It becomes.
  • the gear-type power generation system 20G or the gearless power generation system 20L formed after the hub 21 is, for example, an induction generator 24, a periodic generator 30, or a power conversion device, which are main components constituting two power generation systems. 25 and 33, since each power generation system is formed immediately after Habu 21, even if any trouble occurs in one of the power generation systems, the other remaining safely after the trouble occurs. In this power generation system, redundancy has been achieved so that power generation can be continued while maintaining the power generation function.
  • the achievement of redundancy of the power generation system 20 described above is also effective in reducing the size of the component devices constituting the gear type power generation system 20G and the gearless power generation system 20L. More specifically, when the amount of power generation increases due to an increase in the size of the wind power generator 1, both the induction generator 24 and the periodic generator 30 provided in the two power generation systems share the power. . For this reason, for example, when the sharing ratio is set to 1: 1, the power generation amount of the induction generator 24 and the periodic generator 30 is about half that of the generator that generates electricity by one unit. Can be used.
  • the downsizing of elemental devices such as generators eliminates the need for new development and production of elemental devices that increase in size in response to the increase in power generation accompanying the increase in the size of the wind turbine generator 1. This makes it possible to use existing products with high reliability. Therefore, when the wind turbine generator 1 is increased in size, the response by the side that manufactures and provides the elemental devices has a great influence on the availability of the devices that can achieve the increase in size and the final product price. Can be prevented.
  • the power generation system 20 of the above-described embodiment employs a configuration that is divided into two parts, that is, a gear type power generation system 20G and a gearless power generation system 20L, it is not limited thereto.
  • symbol is attached
  • the hydraulic power generation system 20H supplies the hydraulic pressure generated by the hydraulic pump 40 driven by the rotation of the main shaft 22 that rotates at a low speed together with the hub 21 to a hydraulic motor (not shown), and the hydraulic motor driven by this hydraulic pressure.
  • a generator (not shown) is also driven by the driving force to generate power. Therefore, the output of the main shaft 22 is divided into driving of the hydraulic pump 40 and the speed increaser 23.
  • the hydraulic pump 40 has a configuration in which a plurality of pump units 41 are arranged at an equal pitch in the circumferential direction. Furthermore, although the illustrated hydraulic pump 40 has three rows of pump units 41 arranged in the axial direction of the main shaft 22, the configuration is not limited to the illustrated configuration.
  • the hydraulic pump 40 is connected to a hydraulic motor through a hydraulic pipe 42 that forms a hydraulic circulation circuit.
  • the hydraulic pressure generated by the hydraulic pump 40 is supplied to the hydraulic motor through the hydraulic pipe 42, and the hydraulic motor is driven by this hydraulic pressure.
  • the generator connected to the output shaft (not shown) of the hydraulic motor generates power using the hydraulic motor as a drive source.
  • the hydraulic pressure that has driven the hydraulic motor 40 is returned to the hydraulic pump 40 through the hydraulic pipe 42.
  • illustration of a power converter device is abbreviate
  • the power generation system constituent devices after the hub 21 are made redundant, and the element devices of the gear type power generation system 20G and the hydraulic power generation system 20H can be reduced in size.
  • a power generation system that is divided into two parts, that is, the hydraulic power generation system 20H and the gearless power generation system 20L configured as described above. In this case, the output of the main shaft 22 is divided into driving of the hydraulic pump 40 and the periodic generator 30.
  • generated energy is transmitted from the wind turbine rotor 5 to the generator via the hub 21 of the rotor head 4, and the generated energy is like the main shaft 22.
  • the generated energy is transmitted from the wind turbine rotor 5 to the generator via the hub 21 of the rotor head 4, and the generated energy is like the main shaft 22.
  • the output of the main shaft 22 that rotates at a low speed together with the hub 21 is used to generate two power generation systems, specifically, the gear power generation system 20G, the gearless power generation system 20L, and the gear type. Since the power generation system 20G and the hydraulic power generation system 20H, or the hydraulic power generation system 20H and the gearless power generation system 20L are divided into two to generate power, the generator drive system 20 in which both the electrical elements and the machine side elements are made redundant is provided. 20A. As a result, the redundancy of the generator drive systems 20 and 20A is further improved, and the reliability of continuation of power generation by the wind power generator 1 is further improved.
  • the wind turbine generator 1 of the present embodiment does not include a configuration in which the gearless power generation system 20L is simply arranged in two rows in tandem with respect to the main shaft 22 to divide and use the output.
  • the generator drive systems 20 and 20A are divided into two power generation systems that are independent from each other after the hub 21, the component devices of each power generation system can be reduced in size due to a corresponding decrease in power generation amount.
  • Various problems related to the procurement of elemental devices of the generator drive systems 20 and 20A accompanying the increase in the size of the wind turbine generator 1 can also be solved.
  • the power generation drive systems 20, 20 ⁇ / b> A can be increased in size to increase the amount of power generated by the wind power generator 1 by combining components that are relatively distributed in the market. Therefore, it is possible to improve the ease of development and the period, and improve the reliability and redundancy of the wind turbine generator 1.
  • the present invention is not limited to the above-described embodiment, and the generator drive system may be divided into two or more, and can be appropriately changed within a range not departing from the gist thereof.

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  • Engineering & Computer Science (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)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention vise à améliorer encore davantage la redondance dans un système d'entraînement de génératrice d'énergie (20) et à résoudre certains problèmes liés à la réalisation de dispositifs ou éléments pour le système d'entraînement de génératrice d'énergie (20) qui se posent à la suite d'un accroissement de dimension. Une génératrice de turbine éolienne (1) est équipée du système d'entraînement de génératrice d'énergie (20), qui convertit le vent reçu par une pluralité de pales de rotor de turbine éolienne montées sur un moyeu (21) en force de rotation pour entraîner une génératrice d'énergie, et le système d'entraînement de génératrice d'énergie (20) divise la sortie d'un arbre principal à basse vitesse de rotation (22) qui tourne avec le moyeu (21) en deux systèmes de génération d'énergie (20G, 20L) pour produire de l'énergie.
PCT/JP2013/059074 2013-03-27 2013-03-27 Génératrice de turbine éolienne WO2014155578A1 (fr)

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PCT/JP2013/059074 WO2014155578A1 (fr) 2013-03-27 2013-03-27 Génératrice de turbine éolienne

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287178A (ja) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd 発電装置
JP2001342942A (ja) * 2000-06-05 2001-12-14 Kinden Corp 風力発電装置
JP2003336571A (ja) * 2002-05-18 2003-11-28 Siemens Ag クラッチ装置付きの多段風力発電機
JP2007514887A (ja) * 2003-12-09 2007-06-07 ニュー・ワールド・ジェネレーション・インコーポレイテッド 電気を生成する風力タービン
JP2010516929A (ja) * 2007-01-17 2010-05-20 ニュー・ワールド・ジェネレーション・インコーポレイテッド 複合的な風力発電機及び動作方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287178A (ja) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd 発電装置
JP2001342942A (ja) * 2000-06-05 2001-12-14 Kinden Corp 風力発電装置
JP2003336571A (ja) * 2002-05-18 2003-11-28 Siemens Ag クラッチ装置付きの多段風力発電機
JP2007514887A (ja) * 2003-12-09 2007-06-07 ニュー・ワールド・ジェネレーション・インコーポレイテッド 電気を生成する風力タービン
JP2010516929A (ja) * 2007-01-17 2010-05-20 ニュー・ワールド・ジェネレーション・インコーポレイテッド 複合的な風力発電機及び動作方法

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