KR20070078461A - Slip ring of wind power generator - Google Patents

Slip ring of wind power generator Download PDF

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Publication number
KR20070078461A
KR20070078461A KR1020060008689A KR20060008689A KR20070078461A KR 20070078461 A KR20070078461 A KR 20070078461A KR 1020060008689 A KR1020060008689 A KR 1020060008689A KR 20060008689 A KR20060008689 A KR 20060008689A KR 20070078461 A KR20070078461 A KR 20070078461A
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South Korea
Prior art keywords
slip ring
encoder
wind power
blade
protrusion
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KR1020060008689A
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Korean (ko)
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한상열
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주식회사 효성
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Priority to KR1020060008689A priority Critical patent/KR20070078461A/en
Publication of KR20070078461A publication Critical patent/KR20070078461A/en

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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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • 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
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • 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
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/327—Rotor or generator speeds
    • 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
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/328—Blade pitch angle
    • 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

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

A slip ring of a wind power generator is provided to perform rotational speed measurement of the wind power generator easily by installing a protrusion on a rotational body of the slip ring and coupling a hollow encoder to the protrusion. A slip ring of a wind power generator includes a cylindrical case(32), a cylindrical power supply unit(34), a cylindrical signal unit(36), a terminal unit(38), and an encoder(40). The power supply unit and the signal unit are installed in the case, and provide power and signals for adjusting the pitch of a blade, respectively. The terminal unit is installed at a rear lower portion of the case, and functions as a path for input and output of the power and the signals. The encoder is attached to a rear side of the signal unit.

Description

풍력발전기의 슬립링{Slip ring of wind power generator}Slip ring of wind power generator

도 1은 종래 기술에 따른 풍력발전기 슬립링의 개략도. 1 is a schematic diagram of a wind turbine slip ring according to the prior art;

도 2는 본 발명에 따른 풍력발전기 슬립링의 개략도. 2 is a schematic view of a wind turbine slip ring in accordance with the present invention;

도 3은 본 발명에 따른 슬립링의 실시예에 따른 사진.3 is a photograph according to an embodiment of a slip ring according to the present invention.

도 4는 도 3의 돌출부의 확대 사진. 4 is an enlarged photograph of the protrusion of FIG. 3;

도 5는 종래 기술에 따른 슬립링의 후방 본체부의 개략도. Figure 5 is a schematic view of the rear body portion of the slip ring according to the prior art.

도 6은 본 발명에 따른 슬립링 후방 본체부의 개략도. 6 is a schematic view of a slip ring rear body part according to the present invention;

<도면 보호의 간단한 설명> <Brief description of drawing protection>

10, 30 : 슬립링 12, 32 : 케이스10, 30: slip ring 12, 32: case

14, 34 : 전원부 16, 36 : 신호부14, 34: power supply unit 16, 36: signal unit

18, 38 : 단자부 22, 42 : 플렌지18, 38: terminal portion 22, 42: flange

40 : 회전속도 측정용 엔코더 44 : 돌출부 40: encoder for rotational speed measurement 44: protrusion

본 발명은 풍력발전 시스템에 사용되는 슬립링에 관한 것으로서, 특히 슬립링의 일측에 블레이드의 회전 속도 측정용 인크리멘탈형 엔코더를 장착하여 별도의 추가 장치 없이 상위제어기에서 속도를 측정할 수 있는 풍력발전기의 슬립링에 관한 것이다.The present invention relates to a slip ring used in a wind power generation system, and in particular, by mounting an incremental encoder for measuring the rotational speed of a blade on one side of the slip ring, the wind power can be measured in the upper controller without any additional device The slip ring of the generator.

일반적으로 풍력발전은 날개를 이용하여 바람에너지를 전기에너지로 바꾸는 발전 방식으로서, 날개의 이론상 약 59%만이 전기에너지로 전환이 가능하나, 기계적인 마찰이나 발전기의 효율 및 날개의 형상등의 요인에 의해 20 내지 40% 정도만이 전기에너지로 전환되고 있다. In general, wind power is a power generation method that converts wind energy into electric energy by using a wing. Only about 59% of the wing theory can be converted into electric energy, but due to factors such as mechanical friction, generator efficiency, and wing shape, etc. Only about 20 to 40% is converted into electrical energy.

이러한 풍력발전 시스템은 블레이드 - 동력전달장치 - 발전기 - 소비자로 연결되는 흐름을 가지며, 크게 기계장치부와, 전기장치부 및 제어장치부로 구성된다. Such a wind power generation system has a flow that is connected to a blade-a power transmission device-a generator-a consumer, and is mainly composed of a mechanical unit, an electric unit, and a control unit.

도 1은 종래 기술에 따른 풍력발전기의 슬립링을 설명하기 위한 개략도로서, 슬립링(10)은 원통형의 케이스(12) 내부에 설치된 전원부(14) 및 신호부(16)로 구성되고, 상기 케이스(12)의 후방에는 전력 및 신호 입출력을 위한 단자부(18)가 형성되어 있으며, 상기 슬립링(10)의 선단부에는 회전하는 허브와 연결된 플렌지(22)가 체결되어 있어 상기 플렌지(22)가 슬립링(10)의 내부 몸체 및 연결부와 함께 회전하게 된다. 1 is a schematic view for explaining a slip ring of a wind turbine according to the prior art, the slip ring 10 is composed of a power supply unit 14 and a signal unit 16 installed inside the cylindrical case 12, the case A terminal portion 18 for power and signal input and output is formed at the rear of the 12, and a flange 22 connected to a rotating hub is fastened to the tip portion of the slip ring 10 so that the flange 22 slips. It rotates with the inner body and the connection of the ring 10.

상기와 같은 종래 기술에 따른 슬립링을 구비하는 풍력발전 시스템은 바람의 세기와 방향에 따라 블레이드의 피치를 조절하는데 필요한 전원과 신호를 슬립링에서 공급하게 되는데, 이러한 블레이드의 피치 조절은 바람의 방향이나 세기에 따른 효과적인 발전을 위하여 필요한 것이다. 또한 바람의 세기가 어느 정도 이상 증가하면 시스템의 안전을 위하여 블레이드를 정지시키게 되는데, 상기와 같은 필요성에 의해 블레이드의 회전속도를 측정하기 의한 별도의 감지기를 외부 또는 시스템 내부에 설치하고 이 신호를 상위 제어기에 전달하여야한다. Wind power generation system having a slip ring according to the prior art as described above is to supply the power and signal required to adjust the pitch of the blade according to the wind strength and direction from the slip ring, the pitch of the blade is the direction of the wind It is necessary for effective development according to the centuries and centuries. In addition, if the wind strength increases to a certain degree, the blade is stopped for the safety of the system. As a result, a separate detector for measuring the rotational speed of the blade is installed outside or inside the system. Must be passed to the controller.

따라서 풍력발전 시스템이 복잡해지고, 회전속도 측정 센서가 별도의 장치인 관계로 측정의 정확도가 떨어져 시스템 전체의 수명 및 효율을 저하시키는 문제점이 있다. Therefore, the wind power generation system is complicated, and since the rotational speed measuring sensor is a separate device, there is a problem in that the accuracy of the measurement is reduced, thereby reducing the lifetime and efficiency of the entire system.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 풍력발전 시스템의 허브와 연결되는 슬립링의 타측 단부에 상기 슬립링의 내부 회전체를 통하여 허브와 연동되는 회전 속도 측정용 감지기를 일체로 설치하여 별도의 회전량 감지기를 설치하지 않아 풍력발전 시스템을 간편해지고, 직접 허브와 연동되어 회전력의 측정이 용이하고 정확한 슬립링을 제공함에 있다. The present invention is to solve the above problems, an object of the present invention is a sensor for measuring the rotational speed interlocked with the hub through the inner rotor of the slip ring at the other end of the slip ring is connected to the hub of the wind power generation system It is easy to measure wind power system by installing a separate rotation amount sensor by installing a single rotation amount sensor, and directly linked with a hub to provide accurate slip ring.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 풍력발전기 슬립링의 특징은, Features of the wind power generator slip ring according to the present invention for achieving the above object,

일측이 블레이드의 허브와 연결되며, 상기 블레이드의 피치를 조절하기 위한 전원 및 신호를 전달하기 위한 풍력발전기의 슬립링에 있어서, One side is connected to the hub of the blade, in the slip ring of the wind turbine for transmitting power and signals for adjusting the pitch of the blade,

상기 슬립링 타측의 본체에 형성되어 있는 돌출부와, A protruding portion formed in the main body on the other side of the slip ring;

상기 돌출부와 체결되어 상기 블레이드의 회전속도를 측정하여 상위 제어부로 전달하는 엔코더를 구비함에 있다. The encoder is coupled to the protrusion to measure the rotational speed of the blade and to transmit to the upper control unit.

또한 본 발명의 다른 특징은, 상기 돌출부와 엔코더가 커플링으로 체결됨에 있다. In addition, another feature of the present invention is that the protrusion and the encoder are coupled to the coupling.

또한 본 발명의 또 다른 특징은, 상기 엔코더가 인크리멘탈형 엔코더임에 있다. Still another feature of the present invention is that the encoder is an incremental encoder.

이하, 본 발명에 따른 풍력발전기의 슬립링의 실시예에 대하여 첨부 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of a slip ring of a wind power generator according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 슬립링을 설명하기 위한 개략도이다. 2 is a schematic view for explaining a slip ring according to the present invention.

먼저, 상기 슬립링(30)은 원통형 케이스(32)와, 상기 케이스(32)의 내부에 설치되어 블레이드의 피치 조절을 위한 전원 및 신호를 공급하기 위한 원통형의 전원부(34) 및 신호부(36)와, 상기 케이스(32)의 후방하부에 설치되어 전력 및 신호를 입출력하는 통로인 단자부(38)와, 상기 신호부(36)의 후방에 부착되어 있는 회전속도 측정용 엔코더(40)를 구비하여 구성된다. First, the slip ring 30 is installed in the cylindrical case 32, the case 32 and the cylindrical power supply unit 34 and the signal unit 36 for supplying power and signals for the pitch adjustment of the blades ), A terminal portion 38 which is provided at the rear lower portion of the case 32 and is a passage for inputting and outputting power and signals, and an encoder 40 for measuring the rotational speed attached to the rear of the signal portion 36. It is configured by.

또한 상기 슬립링(30)의 선단부에는 블레이드와 일체되어 회전하는 허브와 연결된 플렌지(42)가 체결수단, 예를 들어 볼트/너트 등으로 체결되어 있어 상기 플렌지(42)와 슬립링(30)의 연결부 및 내부 몸체가 함께 회전한다. 여기서 상기 전원부(34)와 신호부(36)는 리드선(도시되지 않음)을 통해 단자부(38) 및 허브와 연결되어 블레이드의 피치 조절을 위한 전원 및 신호를 상위 제어기로부터 허브로 전달한다. In addition, the flange 42 connected to the hub which rotates integrally with the blade is fastened to the distal end of the slip ring 30 by fastening means, for example, a bolt / nut, and the like. The connection and the inner body rotate together. Here, the power supply unit 34 and the signal unit 36 are connected to the terminal unit 38 and the hub through lead wires (not shown) to transfer power and signals for controlling the pitch of the blades from the host controller to the hub.

또한 상기 슬립링(30)의 후방에 위치하는 속도측정용 엔코더(40)는 중공형으로서, 슬립링(30) 본체 후방의 내부 회전체에 형성된 소정형상, 예를들어 사각 또는 육각 돌기 형상의 돌출부(44)에 중공축을 삽입하여 커플링으로 장착되어 있으며, 상기 엔코더(40)는 바람직하게는 인크리멘탈형을 사용하고, 슬립링(30)을 통하 여 전달된 허브, 즉 블레이드의 회전 속도를 상기 단자부(38)를 통하여 상위 제어기로 전달한다. In addition, the speed measuring encoder 40 located behind the slip ring 30 is hollow, and has a predetermined shape, for example, a square or hexagonal protrusion formed on an inner rotating body behind the main body of the slip ring 30. The hollow shaft is inserted into the coupling 44, and the encoder 40 is preferably an incremental type, and the rotational speed of the hub, ie, the blade, transmitted through the slip ring 30 is adjusted. The terminal 38 transmits the data to the host controller.

도 3은 본 발명에 따른 슬립링의 실시예에 따른 사진으로서, 엔코더 장착전 단계에서 슬립링의 본체에 돌출부를 형성한 상태를 보여주고 있으며, Figure 3 is a photograph according to an embodiment of the slip ring according to the present invention, showing a state in which a protrusion is formed on the main body of the slip ring in the pre-encoder mounting step,

도 4는 도 3의 돌출부 부분의 확대도로서, 상기 돌출부가 엔코더의 중공축과 일치하도록 형성하였음을 알수 있다. 4 is an enlarged view of the protrusion part of FIG. 3, and it can be seen that the protrusion part is formed to coincide with the hollow shaft of the encoder.

또한 도 5 및 도 6은 본 발명과 종래 기술의 차이점을 명확하게 보여 주기 위한 개략도로서, 각각 종래 기술과 본 발명에 따른 슬립링의 후방 본체부를 표시한 것으로서, 도 5에서는 슬립링(10)의 본체 후방에 본 발명과 같은 돌출부를 볼 수 없으나, 도 6에서는 슬립링(30) 본체 후방의 내부 회전체에 형성된 돌출부(44)와, 여기에 엔코더(40)가 장착되어 있는 것을 볼 수 있다. 5 and 6 are schematic diagrams for clearly showing the difference between the present invention and the prior art, which shows the rear main body portion of the slip ring according to the prior art and the present invention, respectively. Although the projections as in the present invention are not seen in the rear of the main body, in FIG. 6, the projections 44 formed in the inner rotating body behind the main body of the slip ring 30 and the encoder 40 are attached thereto.

따라서 블레이드의 허브와 연결된 슬립링과 직접 체결된 엔코더에 의해 블레이드의 회전 속도를 직접 측정할 수 있어 시스템의 안정 및 측정의 정밀도가 향상된다. Therefore, the rotational speed of the blade can be directly measured by an encoder directly coupled to the slip ring connected to the hub of the blade, thereby improving system stability and measuring accuracy.

상기에서의 실시예는 본 발명에의 이해를 돕기 위한 것으로서, 본 발명이 상기의 실시예에 의해 제한되어지는 것은 아니며, 슬립링에 회전속도 측정용 엔코더를 설치한다는 본 발명의 사상에 따른 다양한 실시예를 가질 수 있음은 당업자에게는 자명한 것임을 알 수 있다. The above embodiments are intended to help the understanding of the present invention, and the present invention is not limited to the above embodiments, and various implementations according to the spirit of the present invention provide an encoder for measuring the rotational speed in the slip ring. It will be apparent to those skilled in the art that the present invention may have an example.

이상에서 설명한 바와 같이, 본 발명에 따른 풍력발전기의 블레이드 피치 조 절을 위한 슬립링은 슬립링의 후방 내부 회전 본체에 돌출부를 형성하고, 상기 돌출부에 중공형 엔코더의 중공축이 일치하도록 체결하여 블레이드의 회전속도를 측정하여 상위 제어기로 전달하도록 하였으므로, 풍력발전 시스템의 회전 속도 측정을 용이하게 할 수 있으며, 슬립링 후방과 케이스와의 여유 공간에 엔코더를 설치하여 시스템을 단순화 할 수 있고, 블레이드의 허브와 연결된 슬립링과 직접 체결되어 있는 엔코더에 의해 블레이드의 회전 속도를 직접 측정할 수 있어 시스템의 안정 및 측정의 정밀도가 향상되고 생산 단가가 절감되며, 외관을 미려하게 할 수 있는 이점이 있다. As described above, the slip ring for adjusting the blade pitch of the wind power generator according to the present invention forms a protrusion on the rear inner rotary body of the slip ring, and the hollow shaft of the hollow encoder is fastened to the protrusion to match the blade Since the rotational speed of the wind turbine is measured and transmitted to the host controller, the rotational speed of the wind power generation system can be easily measured, and the encoder can be simplified in the free space between the slip ring and the case, and the system can be simplified. The encoder directly coupled to the slip ring connected to the hub can directly measure the rotational speed of the blade, improving the stability of the system, the accuracy of the measurement, reducing the production cost, and improving the appearance.

Claims (3)

일측이 블레이드의 허브와 연결되며, 상기 블레이드의 피치를 조절하기 위한 전원 및 신호를 전달하기 위한 풍력발전기의 슬립링에 있어서, One side is connected to the hub of the blade, in the slip ring of the wind turbine for transmitting power and signals for adjusting the pitch of the blade, 상기 슬립링 타측의 본체에 형성되어 있는 돌출부와, A protruding portion formed in the main body on the other side of the slip ring; 상기 돌출부와 체결되어 상기 블레이드의 회전속도를 측정하여 상위 제어부로 전달하는 엔코더를 구비하는 풍력발전기의 슬립링. Slip ring of the wind turbine having an encoder coupled to the protrusion to measure the rotational speed of the blade and to transmit to the upper control. 제 1 항에 있어서, 상기 돌출부와 엔코더가 중공형으로서 커플링으로 체결되는 것을 특징으로 하는 풍력발전기의 슬립링. 2. The slip ring of a wind turbine according to claim 1, wherein said protrusion and said encoder are fastened in coupling as a hollow type. 제 1 항에 있어서, 상기 엔코더가 인크리멘탈형 엔코더인 것을 특징으로하는 풍력발전기의 슬립링. The slip ring of a wind turbine according to claim 1, wherein the encoder is an incremental encoder. ..
KR1020060008689A 2006-01-27 2006-01-27 Slip ring of wind power generator KR20070078461A (en)

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KR100840586B1 (en) * 2007-04-27 2008-06-23 근 석 장 Vertical wind power generator
CN101964490A (en) * 2010-08-12 2011-02-02 刘益清 Multifunctional slip ring device
CN102197573A (en) * 2008-10-27 2011-09-21 维斯塔斯风力***集团公司 Slip ring assembly with shaft holder
KR101158967B1 (en) * 2009-06-01 2012-06-21 두산중공업 주식회사 Slip ring connection device for wind turbine
KR101315107B1 (en) * 2012-05-31 2013-10-07 (주)하비코 Slip ring
CN109269532A (en) * 2018-10-18 2019-01-25 北京化工大学 Integrated incremental encoder conducting slip ring
CN112431725A (en) * 2020-10-29 2021-03-02 华能阳江风力发电有限公司 Intelligent wind driven generator

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JP2000345952A (en) * 1999-06-04 2000-12-12 Mitsubishi Heavy Ind Ltd Multipolar wind power generator and wind power generating method
JP2002084797A (en) * 2000-09-06 2002-03-22 Sansha Electric Mfg Co Ltd Wind turbine power generating system
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100840586B1 (en) * 2007-04-27 2008-06-23 근 석 장 Vertical wind power generator
CN102197573A (en) * 2008-10-27 2011-09-21 维斯塔斯风力***集团公司 Slip ring assembly with shaft holder
KR101158967B1 (en) * 2009-06-01 2012-06-21 두산중공업 주식회사 Slip ring connection device for wind turbine
CN101964490A (en) * 2010-08-12 2011-02-02 刘益清 Multifunctional slip ring device
KR101315107B1 (en) * 2012-05-31 2013-10-07 (주)하비코 Slip ring
CN109269532A (en) * 2018-10-18 2019-01-25 北京化工大学 Integrated incremental encoder conducting slip ring
CN109269532B (en) * 2018-10-18 2020-09-04 北京化工大学 Integrated incremental encoder conductive slip ring
CN112431725A (en) * 2020-10-29 2021-03-02 华能阳江风力发电有限公司 Intelligent wind driven generator

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