FR2428749A1 - Commande de generatrice de turbine aerienne - Google Patents
Commande de generatrice de turbine aerienneInfo
- Publication number
- FR2428749A1 FR2428749A1 FR7915179A FR7915179A FR2428749A1 FR 2428749 A1 FR2428749 A1 FR 2428749A1 FR 7915179 A FR7915179 A FR 7915179A FR 7915179 A FR7915179 A FR 7915179A FR 2428749 A1 FR2428749 A1 FR 2428749A1
- Authority
- FR
- France
- Prior art keywords
- air turbine
- generator
- speed
- order
- shaft torque
- 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
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 title 1
- 230000001133 acceleration Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
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
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
- F03D7/044—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with PID control
-
- 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
- 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
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
-
- 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
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
- F03D7/046—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with learning or adaptive control, e.g. self-tuning, fuzzy logic or neural network
-
- 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
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- 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
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
- F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
- F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/102—Purpose of the control system to control acceleration (u)
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1033—Power (if explicitly mentioned)
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/109—Purpose of the control system to prolong engine life
- F05B2270/1095—Purpose of the control system to prolong engine life by limiting mechanical stresses
-
- 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
- F05B2270/32—Wind 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
- F05B2270/327—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
-
- 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
- F05B2270/70—Type of control algorithm
- F05B2270/706—Type of control algorithm proportional-integral-differential
-
- 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)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
La force du vent est utilisée pour entraîner une turbine aérienne raccordée à une génératrice pour la production d'énergie électrique. L'angle du pas des pales de la turbine aérienne est commandé à façon d'une boucle fermée, en vue de maintenir une vitesse de génératrice constante pour des stations de production d'énergie isolées ou lorsque la génératrice est synchronisée avec la charge, ou un couple d'arbre ou une énergie de sortie de génératrice constante lorsque celle-ci est raccordée à un réseau électrique. Des plans de décélération et d'accélération à boucle ouverte sont prévus pour minimiser les variations des contraintes des pales et du couple d'arbre pendant des transistoires de démarrage et d'arrêt, ce qui limite les déviations d'angle de pale en fonction de la vitesse du vent et de la vitesse de la turbine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/916,329 US4189648A (en) | 1978-06-15 | 1978-06-15 | Wind turbine generator acceleration control |
US05/916,321 US4160170A (en) | 1978-06-15 | 1978-06-15 | Wind turbine generator pitch control system |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2428749A1 true FR2428749A1 (fr) | 1980-01-11 |
FR2428749B1 FR2428749B1 (fr) | 1984-10-19 |
Family
ID=27129689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7915179A Granted FR2428749A1 (fr) | 1978-06-15 | 1979-06-13 | Commande de generatrice de turbine aerienne |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2922972C2 (fr) |
DK (1) | DK243579A (fr) |
FR (1) | FR2428749A1 (fr) |
GB (1) | GB2023237B (fr) |
SE (1) | SE444599B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033258A2 (fr) * | 1980-01-16 | 1981-08-05 | Ste Aeropower S.A.R.L. | Aérogénérateur à axe d'orientation variable |
FR2496773A2 (fr) * | 1980-12-24 | 1982-06-25 | Aeropower | Aerogenerateur a axe d'orientation commande |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4339666A (en) * | 1980-12-24 | 1982-07-13 | United Technologies Corporation | Blade pitch angle control for a wind turbine generator |
DE19758857B4 (de) * | 1997-07-25 | 2013-08-08 | Aloys Wobben | Windenergieanlage |
DE19731918B4 (de) * | 1997-07-25 | 2005-12-22 | Wobben, Aloys, Dipl.-Ing. | Windenergieanlage |
DE19832207A1 (de) * | 1998-07-17 | 2000-01-27 | Rolf Hoffmann | Verfahren zur Bestimmung der Windgeschwindigkeit |
GB2364401B (en) * | 2000-07-06 | 2004-07-14 | Turbo Genset Company Ltd The | Distributed control method |
US6921985B2 (en) | 2003-01-24 | 2005-07-26 | General Electric Company | Low voltage ride through for wind turbine generators |
DE10323785B4 (de) * | 2003-05-23 | 2009-09-10 | Wobben, Aloys, Dipl.-Ing. | Verfahren zum Erkennen eines Eisansatzes an Rotorblättern |
DE10361443B4 (de) * | 2003-12-23 | 2005-11-10 | Voith Turbo Gmbh & Co. Kg | Regelung für eine Windkraftanlage mit hydrodynamischem Getriebe |
DK175892B1 (da) | 2004-03-17 | 2005-05-30 | Arne Johansen | Fremgangsmåde til styring af en vindmölle, navnlig i ö-drift, og en vindmölle |
AT504818A1 (de) * | 2004-07-30 | 2008-08-15 | Windtec Consulting Gmbh | Triebstrang einer windkraftanlage |
DE102005029000B4 (de) * | 2005-06-21 | 2007-04-12 | Repower Systems Ag | Verfahren und System zur Regelung der Drehzahl eines Rotors einer Windenergieanlage |
DE102006007919B4 (de) * | 2006-02-21 | 2008-01-24 | Nordex Energy Gmbh | Verfahren zum Betreiben einer Windenergieanlage |
ES2301400B1 (es) * | 2006-11-17 | 2009-05-01 | GAMESA INNOVATION & TECHNOLOGY S.L. | Metodo de reduccion de cargas en un aerogenerador. |
US7883317B2 (en) | 2007-02-02 | 2011-02-08 | General Electric Company | Method for optimizing the operation of a wind turbine |
WO2009033484A2 (fr) * | 2007-09-13 | 2009-03-19 | Vestas Wind Systems A/S | Procédé de commande d'une éolienne, éolienne et utilisation du procédé |
ES2723877T3 (es) * | 2007-11-15 | 2019-09-03 | Siemens Gamesa Renewable Energy Innovation & Technology SL | Método y sistema para el funcionamiento de un aerogenerador |
WO2009082204A1 (fr) * | 2007-12-21 | 2009-07-02 | 2-B Energy Holding B.V. | Parc d'éoliennes, éolienne |
DE102008007519A1 (de) * | 2008-02-05 | 2009-08-13 | Nordex Energy Gmbh | Vorrichtung zur Überwachung der Drehzahl bei einer Windenergieanlage |
DE102008010466A1 (de) * | 2008-02-21 | 2009-09-03 | Nordex Energy Gmbh | Windenergieanlage mit Blatteinstellwinkelregler |
DE102008011139A1 (de) * | 2008-02-26 | 2009-08-27 | Nordex Energy Gmbh | Regler für einen Blatteinstellwinkel mindestens eines Rotorblatts einer Windenergieanlage |
CN101970866B (zh) * | 2008-03-07 | 2013-03-06 | 维斯塔斯风力系统有限公司 | 用于风力涡轮机冗余控制的控制系统和方法 |
DE102008044652A1 (de) * | 2008-08-27 | 2010-03-04 | Nordex Energy Gmbh | Verfahren zum Betreiben einer Windenergieanlage mit einer Windgeschwindigkeitsmesseinrichtung |
EP2333330B1 (fr) | 2009-12-10 | 2017-01-18 | Centa-Antriebe Kirschey GmbH | Éolienne avec embrayage avec protection contre surcharge et procédé |
US8489246B2 (en) | 2010-02-26 | 2013-07-16 | Pratt & Whitney Canada Corp. | Hybrid control system |
DK2386751T3 (en) | 2010-05-12 | 2016-11-28 | Siemens Ag | Windmill |
DE102010044433A1 (de) * | 2010-09-06 | 2012-03-08 | Nordex Energy Gmbh | Verfahren zur Drehzahlregelung einer Windenergieanlage |
US8344550B2 (en) | 2010-12-21 | 2013-01-01 | General Electric Company | Power conversion control with energy storage |
EP2481917A1 (fr) * | 2011-01-26 | 2012-08-01 | Chapdrive As | Eolienne avec une transmission hydrostatique et contrôle LVRT |
EP2481915A1 (fr) * | 2011-01-26 | 2012-08-01 | Chapdrive As | Procédé et système de connexion d'un système d'éolienne à un réseau électrique |
EP2514926B1 (fr) * | 2011-04-17 | 2018-07-04 | Pratt & Whitney Canada Corp. | Système de commande hybride |
EP2784303B1 (fr) * | 2013-03-27 | 2016-11-02 | Alstom Renovables España, S.L. | Procédé de fonctionnement d'une éolienne |
EP2818698B1 (fr) * | 2013-06-28 | 2017-08-09 | Alstom Renovables España, S.L. | Procédé de fonctionnement d'une éolienne |
CN108223268B (zh) * | 2016-12-14 | 2019-07-23 | 北京金风科创风电设备有限公司 | 风力发电机组的转速控制方法和装置 |
CN107630785B (zh) * | 2017-09-11 | 2019-04-02 | 大连国通电气有限公司 | 一种多种工况下的风电机组保护控制系统 |
CN113048009B (zh) * | 2019-12-27 | 2022-11-29 | 新疆金风科技股份有限公司 | 风力发电机组的变桨控制方法、装置及系统 |
CN113217277B (zh) * | 2021-05-13 | 2022-03-15 | 中国华能集团清洁能源技术研究院有限公司 | 一种风力发电机组变桨执行跟踪监督控制系统及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2363850A (en) * | 1941-11-22 | 1944-11-28 | Gen Electric | Control equipment for prime mover electric generating plants |
US3639076A (en) * | 1970-05-28 | 1972-02-01 | Gen Electric | Constant power control system for gas turbine |
US3932058A (en) * | 1974-06-07 | 1976-01-13 | United Technologies Corporation | Control system for variable pitch fan propulsor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547636A (en) * | 1946-12-11 | 1951-04-03 | Fumagalli Charles | Windmill electric generating and storage system, including controlling means |
US2583369A (en) * | 1948-05-21 | 1952-01-22 | Fumagalli Charles | Wind-driven turbine or propeller with electric generator and control devices |
US2795285A (en) * | 1953-07-29 | 1957-06-11 | Westinghouse Electric Corp | Electrical control apparatus for variable pitch propellers |
US2832895A (en) * | 1956-01-31 | 1958-04-29 | Allgaier Werke Gmbh | Control apparatus for wind motors |
FR2313576A1 (fr) * | 1975-06-06 | 1976-12-31 | Buys Victor | Machine eolienne a vitesse de rotation constante |
-
1979
- 1979-06-06 DE DE2922972A patent/DE2922972C2/de not_active Expired
- 1979-06-08 SE SE7905005A patent/SE444599B/sv not_active IP Right Cessation
- 1979-06-11 DK DK243579A patent/DK243579A/da not_active Application Discontinuation
- 1979-06-13 FR FR7915179A patent/FR2428749A1/fr active Granted
- 1979-06-15 GB GB7920852A patent/GB2023237B/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2363850A (en) * | 1941-11-22 | 1944-11-28 | Gen Electric | Control equipment for prime mover electric generating plants |
US3639076A (en) * | 1970-05-28 | 1972-02-01 | Gen Electric | Constant power control system for gas turbine |
US3932058A (en) * | 1974-06-07 | 1976-01-13 | United Technologies Corporation | Control system for variable pitch fan propulsor |
Non-Patent Citations (1)
Title |
---|
4th IECI ANNUAL CONFERENCE PROCEEDINGS, 20-22 mars 1978, pages 143-149, Editeur S.J. VAHAVIOLOS, WESTERN ELECTRIC CO., "Industrial Applications of Microprocessors", Philadelphia, Pennsylvania, USA * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033258A2 (fr) * | 1980-01-16 | 1981-08-05 | Ste Aeropower S.A.R.L. | Aérogénérateur à axe d'orientation variable |
EP0033258A3 (en) * | 1980-01-16 | 1981-11-11 | Ste Aeropower S.A.R.L. | Wind turbine with an adjustably orientable rotor axis |
FR2496773A2 (fr) * | 1980-12-24 | 1982-06-25 | Aeropower | Aerogenerateur a axe d'orientation commande |
Also Published As
Publication number | Publication date |
---|---|
FR2428749B1 (fr) | 1984-10-19 |
SE7905005L (sv) | 1979-12-16 |
DE2922972A1 (de) | 1980-01-03 |
DK243579A (da) | 1979-12-16 |
SE444599B (sv) | 1986-04-21 |
GB2023237A (en) | 1979-12-28 |
GB2023237B (en) | 1982-01-06 |
DE2922972C2 (de) | 1986-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |