JP5695991B2 - 波力発電装置 - Google Patents
波力発電装置 Download PDFInfo
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- JP5695991B2 JP5695991B2 JP2011150694A JP2011150694A JP5695991B2 JP 5695991 B2 JP5695991 B2 JP 5695991B2 JP 2011150694 A JP2011150694 A JP 2011150694A JP 2011150694 A JP2011150694 A JP 2011150694A JP 5695991 B2 JP5695991 B2 JP 5695991B2
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- 238000010248 power generation Methods 0.000 claims description 43
- 238000007667 floating Methods 0.000 claims description 42
- 230000001133 acceleration Effects 0.000 claims description 32
- 238000013016 damping Methods 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 5
- 230000001788 irregular Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012887 quadratic function Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
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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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/20—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4466—Floating structures carrying electric power plants for converting water energy into electric energy, e.g. from tidal flows, waves or currents
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- 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
- F05B2250/00—Geometry
- F05B2250/40—Movement of component
- F05B2250/44—Movement of component one element moving inside another one, e.g. wave-operated member (wom) moving inside another member (rem)
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Vibration Prevention Devices (AREA)
Description
請求項1記載の波力発電装置は、波面に浮ぶ浮動体に設置され、前記浮動体に加わる波力エネルギーを吸収し、吸収した
波力エネルギーを発電エネルギーに変換する波力発電装置であって、前記波力エネルギーを駆動重錘体の揺動運動に変換する波力エネルギー吸収手段と、前記浮動体の揺動方向の加速度を検出する加速度検出手段と、該加速度検出手段によって検出された加速度に基づくフィードバック制御によって、前記浮動体の揺れを抑制する方向に前記駆動重錘体を駆動させる駆動制御手段と、前記駆動重錘体の揺動運動を前記発電エネルギーに変換する減衰手段とを具備し、前記減衰手段の減衰係数は、前記浮動体と前記駆動重錘体との質量比及び前記駆動制手段による前記加速度のフィードバックゲインに基づいて、前記駆動制御手段によって前記駆動重錘体を駆動する制御エネルギーよりも、前記発電エネルギーが大きくなるように設定され、
さらに、本発明に係る波力発電装置は、前記駆動重錘体の駆動に必要な制御エネルギーが、前記発電エネルギーの1/3以下となるように前記駆動手段を制御する制御手段を具備することを特徴とする。
さらに、本発明に係る波力発電装置は、前記制御手段は、前記浮動体の加速度と、前記駆動重錘体と前記浮動体との相対速度とを用いた制御則に基づいて前記駆動手段を制御することを特徴とする。
さらに、本発明に係る波力発電装置は、前記制御手段は、前記浮動体と前記駆動重錘体との相対加速度及び相対変位を用いた制御則に基づいて前記駆動手段を制御することを特徴とする。
本実施の形態の波力発電装置10は、図1を参照すると、波面に浮ぶ船舶等の浮動体1に設置され、浮動体1に加わる波力エネルギーを吸収し、吸収した波力エネルギーによって発電を行う。波力発電装置10は、駆動重錘体2と、モータ11と、加速度センサ12と、速度センサ13と、制御部14と、発電機15と、充電器16と、蓄電池17と、インバータ18とを備え、駆動重錘体2と、モータ11と、発電機15とで駆動系20を構成している。
図3において、mは浮動体1の重量、mdは駆動重錘体2の質量、xは浮動体1の変位、yは浮動体1に対する駆動重錘体2の相対変位、cdは発電機15によって与えられる減衰係数(発電量)、u(t)はモータ11による制御力、kdはパッシブ型バネ材3のバネ定数をそれぞれ表す。波力発電装置10は、浮動体1の変位を駆動重錘体2の駆動によって吸収するため、図3(a)に示すような能動型動吸振器の力学モデルとして表すことができ、モータ11による制御力:u(t)は、下式〔数1〕で表される。
以上の考察の後、非定常不規則外乱に対して時間の経過と共に、必要制御エネルギーがゼロに収束する値は存在するか否かを数値解析により検証した。
信頼のできる波力外力のデータが存在しないので、非定常性の強い地震動(エルセントロ地震波、ピーク加速度100cm/sec2)を用い、各部の応答計算を行った結果を図4に示す。図4を参照すると判るように時間の経過と共に制御エネルギーはゼロに収まる。しかし、途中経過を見ると、制御エネルギーは外乱の非定常性によっては、必ずしもゼロではない。そこで、制御エネルギーが発電エネルギーの1/3を超えることがない程度に制御ゲインgAを設定すれば、常に安定した発電を行うことが可能である。なお、図4中、Input Energyは地震力による入力エネルギー量であり、Control Energyは制御装置によって装置に加えられた制御エネルギー量であり、Damping Energyは発電エネルギー量である。
2 駆動重錘体(波力エネルギー吸収手段)
3 パッシブ型バネ材(波力エネルギー吸収手段、復元材)
10 波力発電装置
10a ネジ軸
10b ナット部
11 モータ
11a リニアガイドレール
11b 可動子
12 加速度センサ
13 速度センサ
14 制御部
15 発電機(減衰手段)
16 充電器
17 蓄電池
18 インバータ
20 駆動系
Claims (4)
- 波面に浮ぶ浮動体に設置され、前記浮動体に加わる波力エネルギーを吸収し、吸収した
波力エネルギーを発電エネルギーに変換する波力発電装置であって、
前記波力エネルギーを駆動重錘体の揺動運動に変換する波力エネルギー吸収手段と、
前記浮動体の揺動方向の加速度を検出する加速度検出手段と、
該加速度検出手段によって検出された加速度に基づくフィードバック制御によって、前
記浮動体の揺れを抑制する方向に前記駆動重錘体を駆動させる駆動制御手段と、
前記駆動重錘体の揺動運動を前記発電エネルギーに変換する減衰手段とを具備し、
前記減衰手段の減衰係数は、前記浮動体と前記駆動重錘体との質量比及び前記駆動制御
手段による前記加速度のフィードバックゲインに基づいて、前記駆動制御手段によって前
記駆動重錘体を駆動する制御エネルギーよりも、前記発電エネルギーが大きくなるように
設定され、
- 前記駆動重錘体の駆動に必要な制御エネルギーが、前記発電エネルギーの1/3以下と
なるように前記駆動手段を制御する制御手段を具備することを特徴とする請求項1記載の
波力発電装置。 - 前記制御手段は、前記浮動体の加速度と、前記駆動重錘体と前記浮動体との相対速度と
を用いた制御則に基づいて前記駆動手段を制御することを特徴とする請求項2記載の波力
発電装置。 - 前記制御手段は、前記浮動体と前記駆動重錘体との相対加速度及び相対変位を用いた制
御則に基づいて前記駆動手段を制御することを特徴とする請求項2記載の波力発電装置。
Priority Applications (2)
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---|---|---|---|
JP2011150694A JP5695991B2 (ja) | 2011-07-07 | 2011-07-07 | 波力発電装置 |
PCT/JP2012/066680 WO2013005668A1 (ja) | 2011-07-07 | 2012-06-29 | 波力発電装置 |
Applications Claiming Priority (1)
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JP2011150694A JP5695991B2 (ja) | 2011-07-07 | 2011-07-07 | 波力発電装置 |
Publications (2)
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JP2013019270A JP2013019270A (ja) | 2013-01-31 |
JP5695991B2 true JP5695991B2 (ja) | 2015-04-08 |
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JP2011150694A Active JP5695991B2 (ja) | 2011-07-07 | 2011-07-07 | 波力発電装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7057901B2 (ja) | 2017-05-25 | 2022-04-21 | 三菱瓦斯化学株式会社 | 切削加工補助潤滑材、切削加工補助潤滑シート、及び切削加工方法 |
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WO2013181701A1 (en) * | 2012-06-05 | 2013-12-12 | Ddnt Consultants Australia Pty Ltd | Wave power generation system and method |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS58221038A (ja) * | 1982-06-15 | 1983-12-22 | Mitsubishi Electric Corp | 防振装置 |
JPH06135379A (ja) * | 1992-10-28 | 1994-05-17 | Noriaki Fujimura | 船舶防揺装置 |
JP3709605B2 (ja) * | 1996-04-15 | 2005-10-26 | 石川島播磨重工業株式会社 | 海洋構造物の減揺装置 |
JPH10184780A (ja) * | 1996-12-26 | 1998-07-14 | Tokimec Inc | 減揺装置 |
JP2956892B2 (ja) * | 1997-03-22 | 1999-10-04 | 川崎重工業株式会社 | エネルギ回収型アクティブ制振装置 |
JP2002068079A (ja) * | 2000-08-24 | 2002-03-08 | Yoshihiro Suda | 能動型減揺装置 |
JP4491597B2 (ja) * | 2002-10-03 | 2010-06-30 | 財団法人生産技術研究奨励会 | サスペンション系の制御方法 |
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Cited By (1)
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JP7057901B2 (ja) | 2017-05-25 | 2022-04-21 | 三菱瓦斯化学株式会社 | 切削加工補助潤滑材、切削加工補助潤滑シート、及び切削加工方法 |
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WO2013005668A1 (ja) | 2013-01-10 |
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