JP2001519996A - 線路同期発電機を補償する方法と装置 - Google Patents
線路同期発電機を補償する方法と装置Info
- Publication number
- JP2001519996A JP2001519996A JP53671998A JP53671998A JP2001519996A JP 2001519996 A JP2001519996 A JP 2001519996A JP 53671998 A JP53671998 A JP 53671998A JP 53671998 A JP53671998 A JP 53671998A JP 2001519996 A JP2001519996 A JP 2001519996A
- Authority
- JP
- Japan
- Prior art keywords
- generator
- exciter
- stator
- winding
- stage
- 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.)
- Granted
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 17
- 238000004804 winding Methods 0.000 claims abstract description 147
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 15
- 239000013598 vector Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 239000000446 fuel Substances 0.000 description 9
- 230000006698 induction Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 6
- 206010052428 Wound Diseases 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/38—Structural association of synchronous generators with exciting machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/42—Arrangements for controlling electric generators for the purpose of obtaining a desired output to obtain desired frequency without varying speed of the generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/10—Special adaptation of control arrangements for generators for water-driven turbines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Synchronous Machinery (AREA)
- Emergency Protection Circuit Devices (AREA)
- Control Of Stepping Motors (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.3相線路同期発電機の正しい位相整合を決定する方法であって、前記線路 同期発電機が、励磁機固定子と励磁機回転子を有する励磁機段であって、前記励 磁機固定子と励磁機回転子のうちの一方が1次巻線を有し前記励磁機固定子と励 磁機回転子のうちの他方が第1、第2及び第3の2次相巻線を有する励磁機段と 、発電機回転子と発電機固定子を有する発電機段であって、前記発電機固定子と 発電機回転子の一方が1次巻線を有し前記発電機固定子と発電機回転子のうちの 他方が第1、第2及び第3の2次相巻線を有する発電機段とを備えるもにおいて 、前記方法は、 前記励磁機及び発電機段の前記1次巻線をVmに等しい線路電圧を有する3相 交流電源に接続するステップと、 前記励磁機段の前記第1の2次相巻線を前記発電機段の前記第1の2次相巻線 に接続するステップと、 前記励磁機段の前記第2の2次相巻線と前記発電機段の前記第2の2次相巻線 の間の電圧がほぼ2Vmに等しいことを確認するステップと、 前記励磁機段の前記第3の2次相巻線と前記発電機段の前記第3の2次相巻線 の間の電圧がほぼ2Vmに等しいことを確認するステップと、 前記励磁機段の前記第2の2次相巻線を前記発電機段の前記第2の2次相巻線 に接続するステップと、 前記励磁機段の前記第3の2次相巻線を前記発電機段の前記第3の2次相巻線 に接続するステップ、 の各ステップを含む、3相線路同期発電機の正しい位相整合を決定する方法。 2.さらに、前記励磁機段の前記第2の2次相巻線と前記発電機段の前記第3 の2次相巻線の間の電圧がほぼ√3Vmに等しいことを確認するステップと、前 記励磁機段の前記第3の2次相巻線と前記発電機段の前記第2の2次相巻線の間 の電圧がほぼ√3Vmに等しいことを確認するステップとを含む、請求項1に記 載の方法。 3.前記励磁機段の前記2次巻線が前記励磁機回転子に巻かれ、前記発電機段 の前記2次巻線が前記発電機回転子に巻かれる、請求項1に記載の方法。 4.前記励磁機段の前記2次巻線が前記励磁機固定子に巻かれ、前記発電機段 の前記2次巻線が前記発電機固定子に巻かれる、請求項1に記載の方法。 5.さらに、前記励磁機段の前記第2の2次相巻線と前記発電機段の前記第2 の2次相巻線の間の電圧を確認し前記励磁機段の前記第3の2次相巻線と前記発 電機段の前記第3の2次相巻線の間の電圧を確認する前に、前記励磁機固定子、 励磁機回転子、発電機固定子及び発電機回転子の1つを軸上で回転させるステッ プを含む、請求項1に記載の方法。 6.さらに、前記励磁機及び発電機段の前記1次巻線における同じ位相順序を 確認するステップを含む、請求項1に記載の方法。 7.線路同期発電機であって、 外部電源によって回転を進めるように配置され、各々交流電源に接続する巻線 を有する1組の極を備える励磁機回転子と、 各々巻線を有する1組の極を有する励磁機固定子であって、前記励磁機回転子 が前記励磁機固定子の内部で回転するよう設置される励磁機固定子と、 前記励磁機回転子と共に回転するよう設置された発電機回転子であって、前記 発電機回転子が、各々前記交流電源に接続する巻線を 有する1組の極を有する発電機回転子と、 前記発電機回転子が中で回転するように設置された内部を有する発電機固定子 であって、前記発電機固定子が、前記励磁機及び発電機回転子の回転によって誘 導された電気的周波数を相殺するために、前記励磁機極の組み合わせの対応する 巻線に逆に接続された巻線を各々有する1組の極を有する発電機固定子とを備え る線路同期発電機。 8.前記励磁機及び発電機回転子の各々が、3相交流電源に接続される3相巻 線を伴う3組の極を備え、前記励磁機及び発電機固定子の各々が3相巻線を伴う 3組の極を備え、前記励磁機固定子の前記3相巻線が、前記励磁機及び発電機回 転子の回転によって誘導された前記電気的周波数を相殺するために、前記発電機 固定子の前記3相巻線に逆に接続された、請求項7に記載の線路同期発電機。 9.さらに、前記励磁機及び固定子回転子と共に回転するよう接続された冗長 回転子と、前記冗長回転子が中で回転するように設置された内部を有する冗長固 定子を備え、前記冗長固定子が、前記励磁機固定子及び発電機固定子の1つに逆 に接続される巻線を各々有する1組の極を有する、請求項7に記載の線路同期発 電機。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3772397P | 1997-02-07 | 1997-02-07 | |
US60/037,723 | 1997-02-07 | ||
PCT/US1998/002651 WO1998037623A1 (en) | 1997-02-07 | 1998-02-06 | Method and apparatus for compensating a line synchronous generator |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001519996A true JP2001519996A (ja) | 2001-10-23 |
JP2001519996A5 JP2001519996A5 (ja) | 2006-06-22 |
JP4101884B2 JP4101884B2 (ja) | 2008-06-18 |
Family
ID=21895943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53671998A Expired - Fee Related JP4101884B2 (ja) | 1997-02-07 | 1998-02-06 | 線路同期発電機を補償する方法と装置 |
Country Status (11)
Country | Link |
---|---|
US (1) | US6072303A (ja) |
EP (1) | EP1018211B1 (ja) |
JP (1) | JP4101884B2 (ja) |
CN (1) | CN1082746C (ja) |
AT (1) | ATE338374T1 (ja) |
AU (1) | AU6323698A (ja) |
BR (1) | BR9807825B1 (ja) |
CA (1) | CA2283943C (ja) |
DE (1) | DE69835757T2 (ja) |
TR (1) | TR199902416T2 (ja) |
WO (1) | WO1998037623A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009531012A (ja) * | 2006-03-17 | 2009-08-27 | インヘテアム エネルヒイ ソシエダー アニノマ | 励磁機及び系統に接続されていない電力変換器を有する可変速風力タービンの発電ブレーキ(dynamicelectricbrake) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5346436A (en) * | 1993-09-23 | 1994-09-13 | Borg-Warner Automotive, Inc. | Air vent for hydraulic chain tensioner |
US20040041480A1 (en) * | 1997-02-07 | 2004-03-04 | Nickoladze Leo G. | Method and apparatus for compensating a line synchronous generator |
US20020180296A1 (en) * | 1998-02-27 | 2002-12-05 | Foundation Gni, Ltd. | Variable speed constant frequency motor |
US6171055B1 (en) * | 1998-04-03 | 2001-01-09 | Aurora Flight Sciences Corporation | Single lever power controller for manned and unmanned aircraft |
US9506405B2 (en) | 1998-04-03 | 2016-11-29 | Rockwell Collins Control Technologies, Inc. | Apparatus and method for controlling power generation system |
SE512784C2 (sv) * | 1998-04-21 | 2000-05-15 | Hoeganaes Ab | Induktionsmaskinstator |
US6285168B1 (en) * | 1999-09-30 | 2001-09-04 | Rockwell Automation Technologies, Inc. | Reactive droop compensation system and method |
US6218813B1 (en) * | 1999-09-30 | 2001-04-17 | Rockwell Technologies, Llc | Cross current compensation system and method |
TWI296875B (en) * | 2002-04-25 | 2008-05-11 | Step motor with multiple stators | |
US6909263B2 (en) * | 2002-10-23 | 2005-06-21 | Honeywell International Inc. | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element |
US20070024147A1 (en) * | 2003-08-18 | 2007-02-01 | Hirzel Andrew D | Selective alignment of stators in axial airgap electric devices comprising low-loss materials |
US7071657B2 (en) * | 2004-03-04 | 2006-07-04 | Raven Technology, Llc | Method and apparatus for the production of power frequency alternating current directly from the output of a single-pole type generator |
US7116073B1 (en) * | 2005-08-10 | 2006-10-03 | Innovative Power Solutions, Llc | Methods and apparatus for controlling a motor/generator |
US7135829B1 (en) | 2005-08-10 | 2006-11-14 | Innovative Power Solutions, Llc | Methods and apparatus for controlling a motor/generator |
US20070126406A1 (en) * | 2005-08-31 | 2007-06-07 | Prevailing Energy, Inc. | Turbine with Configurable Generator Circuit |
CN101401294B (zh) * | 2006-03-17 | 2013-04-17 | 英捷电力技术有限公司 | 具有激励器设备和不连接至电网的功率变换器的变速风机 |
US7576443B2 (en) * | 2006-12-15 | 2009-08-18 | General Electric Company | Method and apparatus for generating electric power |
NZ556760A (en) * | 2007-07-26 | 2008-12-24 | Auckland Uniservices Ltd | An electric generator |
US20100019711A1 (en) * | 2008-07-28 | 2010-01-28 | Orchid Radio Co., Ltd. | Motor with controllable rotor-pole magnetic intensity |
WO2010059983A2 (en) * | 2008-11-21 | 2010-05-27 | Preus Robert W | Wind turbine |
CN102292897B (zh) | 2009-01-16 | 2014-04-02 | 科尔风力发电公司 | 用于轴向场装置的扇块式定子 |
US8198743B2 (en) * | 2009-09-11 | 2012-06-12 | Honeywell International, Inc. | Multi-stage controlled frequency generator for direct-drive wind power |
GB2476238B (en) * | 2009-12-15 | 2015-11-18 | Ge Oil & Gas Uk Ltd | Underwater power generation |
US9154024B2 (en) | 2010-06-02 | 2015-10-06 | Boulder Wind Power, Inc. | Systems and methods for improved direct drive generators |
US8339019B1 (en) | 2012-07-30 | 2012-12-25 | Boulder Wind Power, Inc. | Structure for an electromagnetic machine having compression and tension members |
US8736133B1 (en) | 2013-03-14 | 2014-05-27 | Boulder Wind Power, Inc. | Methods and apparatus for overlapping windings |
US10177620B2 (en) | 2014-05-05 | 2019-01-08 | Boulder Wind Power, Inc. | Methods and apparatus for segmenting a machine |
AT516489A1 (de) * | 2014-10-31 | 2016-05-15 | Ge Jenbacher Gmbh & Co Og | Kraftanlage |
JP6451990B2 (ja) * | 2015-04-02 | 2019-01-16 | 株式会社デンソー | 回転電機 |
US10224848B2 (en) * | 2017-01-30 | 2019-03-05 | Pratt & Whitney Canada Corp. | Method and system for synchronizing generators |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2829333A (en) * | 1955-04-22 | 1958-04-01 | Sperry Gyroscope Co Ltd | Constant-frequency alternating-current generators |
US2854617A (en) * | 1957-01-24 | 1958-09-30 | Siegler Corp | Frequency control apparatus for alternators |
GB1448990A (en) * | 1972-12-22 | 1976-09-08 | Nat Res Dev | Roatary and linear electric machines |
US4019104A (en) * | 1974-03-26 | 1977-04-19 | Parker Louis W | Variable speed induction motor |
FR2425171A1 (fr) * | 1978-05-03 | 1979-11-30 | Ams Sa | Procede d'obtention d'un courant alternatif de frequence fixe a partir d'une machine tournante de vitesse quelconque et generatrice electrique pour sa mise en oeuvre |
US4305001A (en) * | 1979-02-26 | 1981-12-08 | Lima Electric Company, Inc. | Constant frequency alternator |
US4229689A (en) * | 1979-11-05 | 1980-10-21 | Nickoladze Leo G | AC Synchronized generator |
US4472673A (en) * | 1982-04-15 | 1984-09-18 | Energia Andina Ltda. | Rotating electric machine with speed/frequency control |
US4625160A (en) * | 1984-12-17 | 1986-11-25 | Sundstrand Corporation | Variable speed constant frequency generating system |
US4701691A (en) * | 1985-05-14 | 1987-10-20 | Nickoladze Leo G | Synchronous generators |
US5587643A (en) * | 1988-07-12 | 1996-12-24 | Heller Dejulio Corporation | Rotary induction machine having control of secondary winding impedance |
US5274291A (en) * | 1990-01-08 | 1993-12-28 | Clarke Patrick W | Rotary transformer with multiple angularly adjustable stators |
DE69100430T2 (de) * | 1990-05-26 | 1994-04-28 | Satake Eng Co Ltd | Synchron-Induktionsmotor mit Doppelstator. |
US5525894A (en) * | 1992-08-03 | 1996-06-11 | Heller-Dejulio Corporation | Rotary induction generator adapted to be driven by a prime mover for generating electric power |
US5418446A (en) * | 1993-05-10 | 1995-05-23 | Hallidy; William M. | Variable speed constant frequency synchronous electric power generating system and method of using same |
-
1998
- 1998-02-06 WO PCT/US1998/002651 patent/WO1998037623A1/en active IP Right Grant
- 1998-02-06 EP EP98907428A patent/EP1018211B1/en not_active Expired - Lifetime
- 1998-02-06 TR TR1999/02416T patent/TR199902416T2/xx unknown
- 1998-02-06 DE DE69835757T patent/DE69835757T2/de not_active Expired - Lifetime
- 1998-02-06 CN CN988038285A patent/CN1082746C/zh not_active Expired - Fee Related
- 1998-02-06 JP JP53671998A patent/JP4101884B2/ja not_active Expired - Fee Related
- 1998-02-06 CA CA002283943A patent/CA2283943C/en not_active Expired - Fee Related
- 1998-02-06 AT AT98907428T patent/ATE338374T1/de not_active IP Right Cessation
- 1998-02-06 BR BRPI9807825-9A patent/BR9807825B1/pt not_active IP Right Cessation
- 1998-02-06 AU AU63236/98A patent/AU6323698A/en not_active Abandoned
-
1999
- 1999-06-22 US US09/338,002 patent/US6072303A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009531012A (ja) * | 2006-03-17 | 2009-08-27 | インヘテアム エネルヒイ ソシエダー アニノマ | 励磁機及び系統に接続されていない電力変換器を有する可変速風力タービンの発電ブレーキ(dynamicelectricbrake) |
JP2009531011A (ja) * | 2006-03-17 | 2009-08-27 | インヘテアム エネルヒイ ソシエダー アニノマ | 励磁機及び系統に接続されていない電力変換器を有する可変速風力タービン |
JP2009533011A (ja) * | 2006-03-17 | 2009-09-10 | インヘテアム エネルヒイ ソシエダー アニノマ | 可変速風力タービンの高圧直流リンク送電システム |
Also Published As
Publication number | Publication date |
---|---|
EP1018211A4 (en) | 2001-07-11 |
JP4101884B2 (ja) | 2008-06-18 |
CN1082746C (zh) | 2002-04-10 |
CN1251696A (zh) | 2000-04-26 |
WO1998037623A1 (en) | 1998-08-27 |
TR199902416T2 (xx) | 2000-03-21 |
BR9807825B1 (pt) | 2011-04-19 |
US6072303A (en) | 2000-06-06 |
DE69835757T2 (de) | 2007-09-20 |
CA2283943C (en) | 2009-02-03 |
DE69835757D1 (de) | 2006-10-12 |
EP1018211B1 (en) | 2006-08-30 |
EP1018211A1 (en) | 2000-07-12 |
ATE338374T1 (de) | 2006-09-15 |
CA2283943A1 (en) | 1998-08-27 |
AU6323698A (en) | 1998-09-09 |
BR9807825A (pt) | 2000-03-08 |
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