WO2025237485 - REDUCING ROTOR SPEED OF A WIND TURBINE BY CONTROL OF POWER LIMIT AND ROTOR SPEED REFERENCE
National phase entry is expected:
Publication Number
WO/2025/237485
Publication Date
20.11.2025
International Application No.
PCT/DK2025/050067
International Filing Date
13.05.2025
Title **
[English]
REDUCING ROTOR SPEED OF A WIND TURBINE BY CONTROL OF POWER LIMIT AND ROTOR SPEED REFERENCE
[French]
RÉDUCTION DE LA VITESSE DE ROTOR D'UNE ÉOLIENNE PAR COMMANDE DE LIMITE DE PUISSANCE ET DE RÉFÉRENCE DE VITESSE DE ROTOR
Applicants **
VESTAS WIND SYSTEMS A/S
Inventors
MISHRA, Mohit, Mahendra
NETO, Julio, Xavier, Vianna
HAMMERUM, Keld
Priority Data
PA202430234
14.05.2024
DK
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2023 | |
| EPO | Filing, Examination, Granting | 8163 | |
| Japan | Filing, Examination, Granting | 2171 | |
| South Korea | Filing, Examination, Granting | 2057 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,154
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Abstract[English]
The present invention relates control of a wind turbine to reduce rotor speed when a rotor blade is experiencing restrained movement, such as when a rotor blade is stuck. The invention comprises upon detecting that a rotor blade is experiencing restrained movement, set a power limit of a controller of the wind turbine above a power rating of a current operational point, maintain the pitch setting of the rotor blades and gradually decrease the rotor speed reference. Upon detecting that a speed of the rotor has reduced below a threshold, changing a pitch of the rotor blades to further slow the rotor.[French]
La présente invention concerne la commande d'une éolienne pour réduire la vitesse du rotor lorsqu'une pale de rotor subit un mouvement limité, par exemple lorsqu'une pale de rotor est coincée. L'invention consiste à détecter qu'une pale de rotor subit un mouvement limité, à définir une limite de puissance d'un dispositif de commande de l'éolienne au-dessus d'une évaluation de puissance d'un point de fonctionnement actuel, à maintenir le réglage de pas des pales de rotor et à diminuer progressivement la référence de vitesse de rotor. Lors de la détection du fait qu'une vitesse du rotor a été réduite au-dessous d'un seuil, le changement d'un pas des pales de rotor pour ralentir davantage le rotor.