JPS5857083A - Brake device in windmill - Google Patents

Brake device in windmill

Info

Publication number
JPS5857083A
JPS5857083A JP56155815A JP15581581A JPS5857083A JP S5857083 A JPS5857083 A JP S5857083A JP 56155815 A JP56155815 A JP 56155815A JP 15581581 A JP15581581 A JP 15581581A JP S5857083 A JPS5857083 A JP S5857083A
Authority
JP
Japan
Prior art keywords
brake
wind turbine
windmill
braking force
braking
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56155815A
Other languages
Japanese (ja)
Inventor
Jiyunya Nakamura
中村　純彌
Teruji Muraki
村木　輝二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP56155815A priority Critical patent/JPS5857083A/en
Publication of JPS5857083A publication Critical patent/JPS5857083A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F03D7/0244—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
    • F03D7/0248—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking by mechanical means acting on the power train
    • 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
    • F05B2260/00—Function
    • F05B2260/90—Braking
    • F05B2260/902—Braking using frictional mechanical forces
    • 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

Landscapes

  • 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)
  • Wind Motors (AREA)

Abstract

PURPOSE:To obtain the prevention from over rotative speed and the stoppage against excessive wind velocity by a single brake in a windmill by adopting a brake to give a constant braking force by a spring and release the braking by an oil pressure against the force of the spring in a braking device of the windmill. CONSTITUTION:When the number of revolutions of a windmill 1 surpasses a fixed level, the rotative speed of an induction motor 47 is reduced, and the braking torque of a brake 4 is increased. Consequently, the windmill 1 is kept at a constant number of revolutions and prevented from over rotative speed. Meanwhile, when an input voltage D surpasses a voltage E0 corresponding to an upper limit wind velocity, an output is issued from a comparator 33, and a relay 35 is operated to open a contact 36. Then, the motor 47 is stopped to remove the force by a thruster 46 working against a spring 43, and the maximum braking torque is given to a shaft 11 for stopping the windmill 1. This construction permits to obtain the prevention from over rotative speed and the stoppage against excessive wind velocity in the windmill 1 by means of the single brake 4 of a simple structure.

Description

【発明の詳細な説明】 この発明は、風車とくに発電用、発熱用などに用いられ
る大型風車の制動装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a braking device for a wind turbine, particularly a large wind turbine used for power generation, heat generation, etc.

風車の回転数が増大すると回転による遠心力も増大し、
とくに大型風車ではその遠心力はきわめて大きな力とな
るから、風車の回転数がある限度を超えないように制動
制御する必要がある。また、風速がきわめて大きくなる
と、風車の回転による遠心力に加えて、大きな風圧が加
わるから風車が破損するおそれがあり、風速がある限度
を超えたときには風車の回転を停止させておくことが好
ましい。このような風車の過回転防止制御と風車の回転
停止とはいずれも、風車の回転軸に制動力を加えること
により達成しうるが、必ずしも１台の制動装置によって
実現しうるとは限らない。たとえば、遠心カブレーキは
、回転数が所定値を超えたときに制動力を発生し、回転
数の増大にともなってこの制動力も増大するので、風車
の過回転防止には適する。しかしながら、遠心カブレー
キの制動力を風速に応じて制御することは非常に困難で
あるから、過風速による風車の破損を未然に防止するた
めには、そのための別個のブレーキが必要となる。また
電磁ブレーキは、外部がらの電気信号によって制御しう
るという利点を持つが、急激に大きな制動力を加えて急
速停止を行なうことを特徴とするものであるから、風車
のように大きな慣性モーメントを持つものに適用するこ
とは好ましくない。というのは、大きな慣性モーメント
を持って高速回転しているものに急制動をかけると、そ
の回転軸その他の箇所に大きなねじりモーメントや曲げ
モーメントが加わり、破損するおそれがあるがらである
。As the rotation speed of the windmill increases, the centrifugal force due to rotation also increases.
In particular, in large wind turbines, the centrifugal force is extremely large, so it is necessary to perform braking control to prevent the rotation speed of the wind turbine from exceeding a certain limit. In addition, when the wind speed becomes extremely high, large wind pressure is applied in addition to the centrifugal force caused by the rotation of the windmill, which may cause damage to the windmill, so it is preferable to stop the rotation of the windmill when the wind speed exceeds a certain limit. . Both of such over-rotation prevention control of the wind turbine and stopping of rotation of the wind turbine can be achieved by applying a braking force to the rotating shaft of the wind turbine, but this is not necessarily achieved by a single braking device. For example, a centrifugal brake generates a braking force when the rotational speed exceeds a predetermined value, and this braking force increases as the rotational speed increases, so it is suitable for preventing overspeeding of a wind turbine. However, since it is very difficult to control the braking force of the centrifugal brake in accordance with the wind speed, a separate brake is required to prevent damage to the wind turbine due to excessive wind speed. Electromagnetic brakes also have the advantage of being able to be controlled by external electrical signals, but they are characterized by the ability to suddenly apply a large braking force to achieve a rapid stop, so they do not have a large moment of inertia like wind turbines. It is not good to apply it to things you have. This is because if you apply sudden braking to something that has a large moment of inertia and is rotating at high speed, a large twisting or bending moment will be applied to the rotating shaft and other parts, which may cause damage.

この発明は、簡単な構成の１台のブレーキによって、風
車の過回転防止と、通風速時の停止とを行なえ、かつ風
車に無理な力を与えることのない制動装置を提供するこ
とを目的とする。An object of the present invention is to provide a braking device that can prevent over-rotation of a wind turbine and stop the wind turbine at ventilation speed using a single brake with a simple configuration, and that does not apply excessive force to the wind turbine. do.

以下、図面を参照してこの発明の実施例について詳述す
る。Embodiments of the present invention will be described in detail below with reference to the drawings.

第１図において、風車＋１）は、回転軸（川とこれに取
付けられた羽根（１２）がら構成され、軸受（１３）に
回転自在に支持されている。風車（１）の回転数は、回
転数検出器（２）によって検出される。この検出器（２
）は、第３図に示すように、風車（１）の回転数に比例
する電圧（Ａ）を発生する。風車ｆｌｌの設置箇所付近
には風速検出器（３）が設けられている。この検出器（
３）もまた、第６図に示すように、風速に比例する電圧
（Ｄ）を出力する。In Fig. 1, the windmill +1) consists of a rotating shaft (river) and blades (12) attached to it, and is rotatably supported by a bearing (13).The rotation speed of the windmill (1) is It is detected by the rotation speed detector (2).
) generates a voltage (A) proportional to the number of rotations of the wind turbine (1), as shown in FIG. A wind speed detector (3) is provided near the installation location of the wind turbine full. This detector (
3) also outputs a voltage (D) proportional to the wind speed, as shown in FIG.

風車（１）の回転軸（ＩＩ）に制動力を与えるブレーキ
（４）としては、常時はばねで制動力を加えておき、油
圧によって制動力をゆるめるブレーキが採用されている
。このブレーキ（４）の概略的な構成が第２図に示され
ている。ブレーキ−ドラム（４１）は風車［＋）の回転
軸（１１）に取付は固定されている。ブレーキ・ドラム
（４１）の外周面に接して２つのブレーキ・ブロック（
ａｚ　Ｅ＜ドラム（４１）の中心を挾んで対向する位置
に配置されている。これらのブレーキ・ブロック（４２
は、基台（４４）に一端で揺動自在に枢着されたアーム
（ａにそれぞれ取付は固定されており、アーム（４５）
の他端間は強力な引きはね（４３）によって互いの方向
に引張られている。ばね（４３）の力によってブロック
（４のはドラム１４］）の外周面を強く押圧し、回転軸
（１１）には強力な制動力が加えられている。As the brake (4) that applies a braking force to the rotating shaft (II) of the wind turbine (1), a brake is used that constantly applies a braking force using a spring and then loosens the braking force using hydraulic pressure. A schematic structure of this brake (4) is shown in FIG. The brake drum (41) is fixedly attached to the rotating shaft (11) of the wind turbine [+]. Two brake blocks (
az E< They are arranged at positions facing each other across the center of the drum (41). These brake blocks (42
The arms (a) are pivotably attached at one end to the base (44), and the arms (45) are fixed to each other.
The other ends are pulled towards each other by a strong tension spring (43). The force of the spring (43) strongly presses the outer peripheral surface of the block (4 is the drum 14), and a strong braking force is applied to the rotating shaft (11).

このブレーキ（４）による制動力は、スラスタと呼ばれ
る制動力調整器（４６１によって制御される。The braking force of this brake (4) is controlled by a braking force regulator (461) called a thruster.

１１図において、スラスタ（価は、誘導電動ｍ　＋４７
１と、この誘導電動機（４７１によって回転駆動される
油圧ポンプ囮と、この油圧ポンプ（ａで発生する圧油に
よって作動するシリンダ（図示路）とがらなり、シリン
ダのロッドがアーム（４５）の他端に連結されている。In Figure 11, the thruster (value is induction electric m + 47
1, a hydraulic pump decoy rotationally driven by this induction motor (471), and a cylinder (shown in the diagram) that is operated by pressure oil generated by this hydraulic pump (a), and the rod of the cylinder is connected to the other end of the arm (45). is connected to.

このシ′リンダのロッドによって、アーム（４５１の他
端かばね（４３の力に抗して引張られ、回転軸（１１）
に加わる制動トルクが加減される。誘導電動機（４７１
は、供給する電流（電圧）の周波数を変えることにより
、その回転速度が制御される。電動機（４′７）の回転
速度が変わるとポンプ＋４８）から発生する油圧も変わ
り、この結果ブレーキ（４）の制動トルクが変えられる
。誘導電動機（４ηの供給電流の周波数が高いと、その
回転速度も速くなり、ポンプ關の油圧も大きくなるから
、ばね制はより強い力で引張られ、回転＃ｆ＋＋）に加
わる制動トルクは小さくなる。逆に周波数を低くすると
制動トルクは大きくなる。The other end of the arm (451) is pulled against the force of the spring (43) by the rod of this cylinder, and the rotation axis (11)
The braking torque applied to is adjusted. Induction motor (471
The rotation speed is controlled by changing the frequency of the supplied current (voltage). When the rotation speed of the electric motor (4'7) changes, the oil pressure generated from the pump +48) also changes, and as a result, the braking torque of the brake (4) changes. The higher the frequency of the induction motor (4η) supply current, the faster its rotation speed and the greater the oil pressure around the pump, so the spring brake is pulled with a stronger force and the braking torque applied to the rotation #f++ is smaller. . Conversely, when the frequency is lowered, the braking torque increases.

第１図において、回転数検出器（２）の出力電圧（３）
は増巾器の）で増巾されたのち、バイアス器（社）に入
力する。バイアス器■には、設定器に）によって所定の
回転数に対応する電圧（ＲＯ）　（（ＲＯ）は所定回転
数を表わす場合もある）が設定されている。入力電圧（
ト）からこの電圧（ＲＯ）が差引かれバイアス器＠から
は、第３図に示すような電圧の）が出力される。この電
圧の）は、回転数が（ＲＯ）のときに０となる。この回
転数（ＲＯ）は、風車の回転数がこの値（ＲＯ）を超え
ると過回転防止のためにブレーキ（４）による制動が開
始されるという臨界値である。In Figure 1, the output voltage (3) of the rotation speed detector (2)
is amplified by an amplifier (amplifier) and then input to a bias device (company). A voltage (RO) corresponding to a predetermined rotational speed ((RO) may also represent a predetermined rotational speed) is set in the bias device (2) by a setting device. Input voltage (
This voltage (RO) is subtracted from the voltage (RO), and the bias device @ outputs the voltage (RO) as shown in FIG. This voltage) becomes 0 when the rotational speed is (RO). This number of rotations (RO) is a critical value such that when the number of rotations of the wind turbine exceeds this value (RO), braking by the brake (4) is started to prevent over-rotation.

バイアス器＠の出力電圧［Ｆ］）は、負側入力として引
算器（至）に入力する。引算器（至）の正側入力は、設
定器□□□）によって設定された基準電圧（ＶＯ）であ
る。引算器（財）は、第４図に示すように、電圧の）が
負の場合には基準電圧（ＶＯ）に等しい電圧を、電圧の
）が正になった場合には電圧（ＶＯ）からＣＢ）を減算
して得られる電圧（Ｃ）を出力する。この電圧（Ｃ）は
可変周波数インバータ■に送られる。The output voltage [F] of the bias device @ is input to the subtracter (to) as a negative input. The positive input of the subtracter (to) is the reference voltage (VO) set by the setter (□□□). As shown in Fig. 4, the subtracter outputs a voltage equal to the reference voltage (VO) when the voltage () is negative, and outputs a voltage (VO) when the voltage () becomes positive. The voltage (C) obtained by subtracting CB) from CB is output. This voltage (C) is sent to variable frequency inverter (2).

このインバータ（財）は、入力電圧Ｃ）に比例する周波
数の駆動出力を発生・する。この駆動出力はリレー（ト
）の接点（至）を経て誘導電動機（４ηに供給される。This inverter generates a drive output with a frequency proportional to the input voltage C). This drive output is supplied to the induction motor (4η) via the contact (to) of the relay (g).

風車Ｈの回転数が（ＲＯ）以下の場合には、出力（Ｃ）
は電圧（ｖｏ　）に等しく、誘導電動ｉ　（４７１は高
速の一定回転速度で回転し、ブロック（４２１がドラム
（４１１の外周面からり（き離されている。したかって
、この場合には回転軸（１１）に加わるブレーキ（４）
魯 の制動トルクはＯである。風車（１）の回転数が（ＲＯ
）を超えると誘導電動機（４７）の回転速度は低下し、
第５図に示すように、ブレーキ（４）の制動トルクはし
だいに増大する。風車（１）の回転数の増大にともない
制動トルクも増大するから、回転数はある一定値に保持
され、風車（］）の過回転が防止される。If the rotation speed of wind turbine H is below (RO), the output (C)
is equal to the voltage (vo), the induction motor i (471 rotates at a high constant rotational speed, and the block (421 is separated from the outer peripheral surface of the drum (411). Therefore, in this case, the rotation Brake (4) applied to shaft (11)
Lu's braking torque is O. The rotation speed of the windmill (1) is (RO
), the rotational speed of the induction motor (47) decreases,
As shown in FIG. 5, the braking torque of the brake (4) gradually increases. Since the braking torque also increases as the rotational speed of the windmill (1) increases, the rotational speed is maintained at a certain constant value and over-rotation of the windmill (]) is prevented.

風速検出器（３）の出力電圧（Ｄ）は、増巾器（３１）
で増巾されたのち、平滑回路■で平滑されて、比較器（
２）に入力する。比較器（財）には、設定器（財）によ
つて、上限の風速（ＷＯ）に対応する電圧（ＥＯ）が設
定されている。そして、入力電圧（Ｄ）がこの上限電圧
（ＥＯ）を超えると比較器（ト）がら出力が発生し、リ
レー（至）が作動して接点（至）が開く。この結果、誘
導電動機（４７）にはインバータ２４）がら動作電圧が
供給されなくなり、電動機＋４７）は停止する。したが
って、スラスタｆ４６）にょるばね（４３１に抗して働
く力がなくなり、回転軸（川には最大の制動トルクが加
わり、風車ｆ１１は停止する。電動機（４ηが停止して
もスラスタ（４６１における油圧シリンダの力は急激に
減少する訳ではなく、ゆっくりと減少するから、回転軸
（川に加わる制動トルクも、第６図に示すようにゆっく
りと大きくなる。The output voltage (D) of the wind speed detector (3) is
After being amplified by the smoothing circuit ■, it is smoothed by the comparator (
2) Enter. A voltage (EO) corresponding to the upper limit wind speed (WO) is set in the comparator by a setting device. When the input voltage (D) exceeds this upper limit voltage (EO), an output is generated from the comparator (G), the relay (To) is activated, and the contact (To) is opened. As a result, the inverter 24) no longer supplies the operating voltage to the induction motor (47), and the motor +47) stops. Therefore, the force acting against the thruster f46) against the spring (431) disappears, and the maximum braking torque is applied to the rotating shaft (river), and the wind turbine f11 stops.Even if the electric motor (4η) stops, the thruster (461) Since the force of the hydraulic cylinder does not decrease suddenly but slowly, the braking torque applied to the rotating shaft (river) also increases slowly as shown in FIG.

このことにより、風車ｆｉｌの回転軸（１１）に急激に
大きな制動力が加わることによる回転軸（１１）や羽根
（１２）の破損が未然に防止される。制動トルクが増大
する速度は、スラスタ（４６）のシリンダの油戻し路に
設けられた絞り弁の絞り量によって加減することができ
る。このように、１台のブレーキ（４）によって、風車
の過回転防止と、風速が異常に大きくなった場合の風車
の停止とを行なうことができる。This prevents damage to the rotating shaft (11) and blades (12) due to sudden application of a large braking force to the rotating shaft (11) of the wind turbine fil. The speed at which the braking torque increases can be controlled by the amount of throttle of a throttle valve provided in the oil return path of the cylinder of the thruster (46). In this way, one brake (4) can prevent the wind turbine from over-rotating and stop the wind turbine when the wind speed becomes abnormally high.

第１図において・雨検出器ｉ２＋　＋３１の出力電圧（
Ａ＞（６）はともに記録計−に送られ、風車の回転数お
よび風速が記録される。設定器（イ）（イ）（財）にお
ける設定値（ＲＯ）　（ＶＯ）　（Ｅ’０）は可変であ
ることは言うまでもない。また、第１図に示す制御回路
の電源が停電した場合には制御が不可能となるが、誘導
電動機（４７１も停止する結果、風車＋１）はゆっくり
と停止するので、不慮の事故や破損を起こすことはない
。In Figure 1, the output voltage of rain detector i2+ +31 (
Both A>(6) are sent to a recorder, and the number of rotations of the windmill and the wind speed are recorded. It goes without saying that the set value (RO) (VO) (E'0) in the setting device (A) (A) (I) (I) is variable. In addition, if the power supply to the control circuit shown in Figure 1 is interrupted, control will be impossible, but the induction motor (471 will also stop, resulting in wind turbine +1) will stop slowly, preventing unexpected accidents and damage. It won't happen.

上記実施例では、制動力調整器のモータとして誘導電動
機が用いられているので、その回転速度制御のために可
変周波数インバータが設けられている。制動力調整器に
は他の電動機を使用することができるのはいうまでもな
く、この場合にはインバータに代えて、その電動機の回
転速度制御回路が設けられる。In the above embodiment, since an induction motor is used as the motor of the braking force regulator, a variable frequency inverter is provided to control its rotational speed. It goes without saying that another electric motor can be used as the braking force regulator, and in this case, a rotation speed control circuit for the electric motor is provided in place of the inverter.

以上のようにこの発明による風車の制動装置では、常時
はねて制動力を加えておき、油圧によってばねの力に抗
して制動をゆるめるブレーキが用いられているから、風
車の過回転防止と過風速のときの風車の停止とをこの１
台のブレーキで行なうことができる。しかもブレーキの
構成は簡単である。風車の過回転防止制御においては、
風車の回転数とあらかじめ定められた回転数との差に応
じてブレーキの制動力を調整しているので、風車の回転
数の増大に応じて制動力も増大し、過回転防止が確実に
達成される。As described above, the wind turbine braking device according to the present invention uses a brake that constantly springs to apply braking force and then uses hydraulic pressure to loosen the braking against the force of the spring. This 1 describes the stoppage of wind turbines in the case of excessive wind speed.
This can be done using the brakes on the stand. Moreover, the structure of the brake is simple. In wind turbine overspeed prevention control,
The braking force of the brake is adjusted according to the difference between the wind turbine rotation speed and a predetermined rotation speed, so the braking force increases as the wind turbine rotation speed increases, ensuring overspeed prevention. be done.

また風車の停止制御においては、ブレーキによる制動力
がゆっくりと増大し、急激に大きな制動力が加わること
がないので、風車の破損のおそれは全くない。Furthermore, in the wind turbine stop control, the braking force by the brake increases slowly, and no sudden large braking force is applied, so there is no risk of damage to the wind turbine.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、この発明の実施例を示す構成およびブロック
図、第２図はブレーキを示す構成図、第３図は、風車の
回転数と回転数検出器の出力との関係を示すダラム、第
４図は、風車の回転数と制御電圧との関係を示すグラフ
、第５図は、風車の回転数とブレーキの制動トルクとの
関係を示すグラフ、第６図は、風速と風速検出器の出力
およびブレーキの制動トルクとの関係を示すグラフであ
る。 ＋１）・・・風車、（２）・・・回転数検出器、（３）
・・・風速検出器、（４）・・・ブレーキ、（川・・・
風車の回転軸、力）・・・引算器、（２（イ）・・・可
変周波数インバータ、頭）・・・比較器、［４１）・・
・ブレーキ・ドラム、＋４２）・・・ブレーキ・ブロッ
ク、（４Ｊ・・・ばね、（４ｅ・・・・スラスタ、（４
η・・・誘導電動機、（心・・・油圧ポンプ。 以　　上 特許出願人　　昭和アルミニウム株式会社外４名FIG. 1 is a configuration and block diagram showing an embodiment of the present invention, FIG. 2 is a configuration diagram showing a brake, and FIG. Figure 4 is a graph showing the relationship between wind turbine rotation speed and control voltage, Figure 5 is a graph showing the relationship between wind turbine rotation speed and brake braking torque, and Figure 6 is a graph showing wind speed and wind speed detector. 3 is a graph showing the relationship between the output of the brake and the braking torque of the brake. +1)...Windmill, (2)...Rotation speed detector, (3)
...Wind speed detector, (4)...Brake, (river...
Wind turbine rotation axis, force)...Subtractor, (2(a)...Variable frequency inverter, head)...Comparator, [41)...
・Brake drum, +42)... Brake block, (4J... Spring, (4e... Thruster, (4
η...Induction motor, (core...Hydraulic pump. Applicants for the above patents: Showa Aluminum Co., Ltd. and 4 others)

Claims (5)

【特許請求の範囲】[Claims] （１）　　風車の回転数を検出する回転数検出器、風車
の回転軸に制動力を加えるブレーキ、および回転数検出
器の検出出力にもとづいてブレーキの制動力を制御する
制御回路を備え、ブレーキは、風車の回転軸に固定され
たブレーギ拳ドラムと、ブレーキ・ドラムの外周面に接
するブレーキ・ブロックと、プレーキープロックをブレ
ーキ・ドラムの外周面に押圧した状態に保持するブレー
キはねと、制御回路の出力にもとづいてブレーキばねに
よる制動力を変える制動力調整器とからなる、風車の制
動装置。(1) The brake system is equipped with a rotation speed detector that detects the rotation speed of the wind turbine, a brake that applies braking force to the rotating shaft of the wind turbine, and a control circuit that controls the braking force of the brake based on the detection output of the rotation speed detector. consists of a Bregie fist drum fixed to the rotating shaft of the windmill, a brake block in contact with the outer circumferential surface of the brake drum, and a brake spring that holds the play-keep lock pressed against the outer circumferential surface of the brake drum. A wind turbine braking device consisting of a braking force regulator that changes the braking force of a brake spring based on the output of a control circuit. （２）　　ブレーキの制動力調整器が、制御回路の出力
によって速度制御される可変速モータと、このモータに
よって回転駆動される油圧ポンプと、この油圧ポンプか
らの圧油により作動するアクチュエータとからなる、特
許請求の範囲第（＋１項記載の風車の制動装置。(2) The braking force regulator of the brake consists of a variable speed motor whose speed is controlled by the output of a control circuit, a hydraulic pump rotationally driven by this motor, and an actuator operated by pressure oil from this hydraulic pump. , a braking device for a wind turbine according to Claim No. (+1). （３）　　制御回路が、検出回転数とあらかじめ定めら
れた基準回転数とを比較してその差により制動力調整器
を制御するものである、特許請求の範囲第ｍ項記載の風
車の制動装置。(3) The braking device for a wind turbine according to claim m, wherein the control circuit compares the detected rotation speed with a predetermined reference rotation speed and controls the braking force regulator based on the difference. . （４）可変速モータが誘導電動機であ・つて、制御回路
は、検出回転数とあらかじめ定められた基準回転数との
差を出力する回路と、この差信号に応じた周波数の駆動
出力を発生する可変周波数インバータとからなる、特許
請求の範囲第（２）項記載の風車の制動装置。(4) The variable speed motor is an induction motor, and the control circuit includes a circuit that outputs the difference between the detected rotation speed and a predetermined reference rotation speed, and a drive output with a frequency according to this difference signal. A braking device for a wind turbine according to claim (2), comprising a variable frequency inverter. （５）　　風速検出器と、検出風速があらかじめ定めら
れた上限値を超えたときにブレーキの制動力調整器に風
車の回転停止信号を出力する回路とを備えた特許請求の
範囲第ｆｌｊ項記載の風車の制動装置。(5) Claim flj comprising a wind speed detector and a circuit that outputs a wind turbine rotation stop signal to a brake braking force regulator when the detected wind speed exceeds a predetermined upper limit value. Braking device of a windmill.
JP56155815A 1981-09-29 1981-09-29 Brake device in windmill Pending JPS5857083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56155815A JPS5857083A (en) 1981-09-29 1981-09-29 Brake device in windmill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56155815A JPS5857083A (en) 1981-09-29 1981-09-29 Brake device in windmill

Publications (1)

Publication Number Publication Date
JPS5857083A true JPS5857083A (en) 1983-04-05

Family

ID=15614073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56155815A Pending JPS5857083A (en) 1981-09-29 1981-09-29 Brake device in windmill

Country Status (1)

Country Link
JP (1) JPS5857083A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068835A1 (en) * 2004-01-13 2005-07-28 Nippon Yusen Kabushiki Kaisha Marine straight wing/vertical shaft type wind power generation device
ITBO20100545A1 (en) * 2010-09-07 2012-03-08 Linz Electric S R L WIND TURBINE WITH VERTICAL AXIS
WO2014200814A1 (en) * 2013-06-13 2014-12-18 Cooper Industries Holdings Wind turbine electric generator with torque limiting brake
EP2698534A3 (en) * 2012-08-16 2017-11-29 General Electric Company System and method for braking a wind turbine rotor at an overspeed condition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517135A (en) * 1947-08-15 1950-08-01 Wesley H Rudisill Electric generating system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517135A (en) * 1947-08-15 1950-08-01 Wesley H Rudisill Electric generating system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068835A1 (en) * 2004-01-13 2005-07-28 Nippon Yusen Kabushiki Kaisha Marine straight wing/vertical shaft type wind power generation device
ITBO20100545A1 (en) * 2010-09-07 2012-03-08 Linz Electric S R L WIND TURBINE WITH VERTICAL AXIS
WO2012032075A1 (en) * 2010-09-07 2012-03-15 Linz Electric S.R.L. Vertical axis wind turbine
EP2698534A3 (en) * 2012-08-16 2017-11-29 General Electric Company System and method for braking a wind turbine rotor at an overspeed condition
WO2014200814A1 (en) * 2013-06-13 2014-12-18 Cooper Industries Holdings Wind turbine electric generator with torque limiting brake
US9534584B2 (en) 2013-06-13 2017-01-03 Cooper Industries Holdings Wind turbine electric generator with torque limiting brake

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