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1. WO2020094752 - PITCH CONTROL OF WIND TURBINE BLADES IN A STANDBY MODE

Publication Number WO/2020/094752
Publication Date 14.05.2020
International Application No. PCT/EP2019/080459
International Filing Date 07.11.2019
IPC
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
CPC
F03D 7/0224
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
022Adjusting aerodynamic properties of the blades
0224Adjusting blade pitch
F03D 7/0284
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
028Controlling motor output power
0284in relation to the state of the electric grid
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
F05B 2270/101
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
2270Control
10Purpose of the control system
101to control rotational speed (n)
F05B 2270/1071
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
2270Control
10Purpose of the control system
107to cope with emergencies
1071in particular sudden load loss
F05B 2270/327
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
2270Control
30Control parameters, e.g. input parameters
327Rotor or generator speeds
Applicants
  • MHI VESTAS OFFSHORE WIND A/S [DK]/[DK]
Inventors
  • LUND, Kasper Bitsch
  • CAPONETTI, Fabio
  • BRANDAO MARTINS, Andre
Agents
  • VESTAS PATENTS DEPARTMENT
Priority Data
18204859.507.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PITCH CONTROL OF WIND TURBINE BLADES IN A STANDBY MODE
(FR) CONTRÔLE À CALAGE VARIABLE DE PALE POUR PALES D'ÉOLIENNE DANS UN MODE D'ATTENTE
Abstract
(EN)
The present disclosure relates to a method of operating a wind turbine generator (WTG) comprising a pitch control system, the method comprising: a) operating the WTG in a normal mode while the WTG is connected to an external grid; b) controlling the pitch angle of the blades using a normal pitch control mode while the WTG is operating in the normal mode; c) detecting a grid loss; d) operating the WTG in a standby mode during the grid loss; and e) controlling the pitch angle of the blades in dependence on a monitored speed parameter of the WTG using a standby pitch control mode different to the normal pitch control mode while the WTG is operating in the standby mode, wherein the standby pitch control mode is less responsive than the normal pitch control mode such that the power consumption of the pitch control system is reduced when the WTG is operating in the standby mode..
(FR)
La présente invention concerne un procédé de fonctionnement d'un aérogénérateur (WTG) comprenant un système de contrôle à calage variable de pale. Le procédé consiste à : a) faire fonctionner le WTG dans un mode normal pendant qu'il est connecté à une grille externe; b) commander l'angle de calage des pales à l'aide d'un mode de contrôle à calage variable de pale normal pendant que le WTG fonctionne dans le mode normal; c) détecter une perte de grille; d) faire fonctionner le WTG dans un mode d'attente pendant la perte de grille; et e) commander l'angle de calage des pales en fonction d'un paramètre de vitesse surveillé du WTG à l'aide d'un mode de contrôle à calage variable de pale d'attente différent du mode de contrôle à calage variable de pale normal pendant que le WTG fonctionne dans le mode d'attente. Du fait que le mode de contrôle à calage variable de pale d'attente soit moins sensible que le mode de contrôle à calage variable de pale normal, alors la consommation d'énergie du système de contrôle à calage variable de pale est réduite pendant que le WTG fonctionne en mode d'attente.
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