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1. WO2007144146 - WIND ENERGY INSTALLATION WITH AN AUTONOMOUS ENERGY SUPPLY FOR A BLADE ADJUSTMENT DEVICE

Publication Number WO/2007/144146
Publication Date 21.12.2007
International Application No. PCT/EP2007/005180
International Filing Date 12.06.2007
IPC
F03D 7/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
F03D 7/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
02the wind motors having rotation axis substantially parallel to the air flow entering the rotor
F03D 9/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
02the apparatus storing power
F03D 11/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
11Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
CPC
F03D 7/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
F03D 7/0268
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
02the wind motors having rotation axis substantially parallel to the air flow entering the rotor
0264for stopping or in emergency situation
0268Parking or storm protection
F03D 80/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
80Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
F03D 9/11
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
10Combinations of wind motors with apparatus storing energy
11storing electrical energy
F03D 9/255
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
20Wind motors characterised by the driven apparatus
25the apparatus being an electrical generator
255connected to an electrical general supply grid; Arrangements therefor
F05B 2260/76
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
2260Function
70Adjusting of angle of incidence or attack of rotating blades
76the adjusting mechanism using auxiliary power sources
Applicants
  • REPOWER SYSTEMS AG [DE]/[DE] (AllExceptUS)
  • LETAS, Heinz-Hermann [DE]/[DE] (UsOnly)
Inventors
  • LETAS, Heinz-Hermann
Agents
  • GLAWE DELFS MOLL
Priority Data
10 2006 027 224.212.06.2006DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) WINDENERGIEANLAGE MIT EINER AUTARKEN ENERGIEVERSORGUNG FÜR EINE BLATTVERSTELLEINRICHTUNG
(EN) WIND ENERGY INSTALLATION WITH AN AUTONOMOUS ENERGY SUPPLY FOR A BLADE ADJUSTMENT DEVICE
(FR) Eolienne muniE d'une alimentation EN énergie autonome pour un dispositif de RÉGLAGE des pales
Abstract
(DE)
Windenergieanlage mit einem durch einen Rotor (2) mit verstellbaren Rotorblättern (21) angetriebenen Generator (13) zur Erzeugung elektrischer Energie, wobei eine Pitchverstelleinrichtung (3) zum Verstellen der Blätter vorgesehen ist, die einen Notkreis (5) mit einem Energiespeicher (50) zum Betätigen eines Blattstellmotors (55) umfasst. Erfindungsgemäß ist vorgesehen, dass parallel zum Energiespeicher (50) ein Nebenschlusszweig (60) mit einer Stromspiegeleinrichtung (6, 6') vorgesehen ist, wobei die Stromspiegeleinrichtung (6, 6') so ausgebildet ist, um den Stromnebenschlusszweig (60) abhängig von einem Rückspeisestrom des Blattstellmotors (55) zu steuern. Die Erfindung schafft einen Stromspiegel (6), mit dem der im Schiebezustand auftretende Rückspeisestrom kontrolliert über einen Nebenschlusszweig abgeführt wird, und damit der elektrische Energiespeicher (50) vor einem schädlichen Rückspeisestrom geschützt wird. Die Erfindung erreicht damit, dass ein schädlicher Anstieg der Spannung des elektrischen Energiespeichers (50) sowie ein Ansteigen der Motordrehzahl des Blattstellmotors (55) im Schiebebetrieb verhindert werden. Die Erfindung betrifft ein entsprechendes Verfahren.
(EN)
Wind energy installation with a generator (13) which is driven by a rotor (2) with adjustable rotor blades (21), for producing electrical energy, wherein a pitch adjustment device (3) is provided for adjusting the blades, which pitch adjustment device comprises an emergency circuit (5) with an energy store (50) for actuating a blade actuating motor (55). The invention provides for a shunt branch (60) with a current-balancing device (6, 6') to be provided in parallel with the energy store (50), wherein the current-balancing device (6, 6') is designed so as to control the current shunt branch (60) depending on a feedback current from the blade actuating motor (55). The invention provides a current balancing circuit (6), with which the feedback current occurring in the overrunning state is dissipated in controlled fashion via a shunt branch and therefore the electrical energy store (50) is protected from a damaging feedback current. The invention therefore achieves a situation in which a damaging rise in the voltage of the electrical energy store (50) and a rise in the motor speed of the blade actuating motor (55) are prevented during overrunning operation. The invention relates to a corresponding method.
(FR)
L'invention concerne une éolienne comprenant un générateur (13) entraîné par un rotor (2) muni de pales (21) réglables pour produire de l'énergie électrique. Selon l'invention, il est prévu un dispositif de réglage du pas (3) destiné à déplacer les pales, lequel comprend un circuit de secours (5) doté d'un accumulateur d'énergie (50) pour actionner un moteur de réglage des pales (55). Conformément à l'invention, une branche de dérivation (60) comprenant un dispositif miroir de courant (6, 6') est prévue en parallèle avec l'accumulateur d'énergie (50) et le dispositif miroir de courant (6, 6') est configuré de manière à commander la branche de dérivation de courant (60) en fonction d'un courant de retour du moteur de réglage des pales (55). L'invention concerne un miroir de courant (6) qui permet d'effectuer une évacuation contrôlée par le biais d'une branche de dérivation du courant de retour produit en situation de mouvement et de protéger ainsi l'accumulateur d'énergie (50) électrique, d'un décrochage de retour dommageable. L'invention permet ainsi d'éviter une augmentation dommageable de la tension de l'accumulateur d'énergie (50) électrique, ainsi qu'une augmentation de la vitesse de rotation du moteur (55) de réglage des pales en mode de déplacement. L'invention concerne un procédé correspondant.
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