Wind turbine variable-pitch control method and device

US10823145B2 · kind B2 · utility

Assignee

• BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD. · CN

Inventors

• Jie Zhou · Mason, US
• Hao Tang · Shanghai, CN
• Qingtian WANG · Beijing, CN

Key dates

• Filing date: May 18, 2017
• Grant date: Nov 3, 2020
• Expiry date: Oct 26, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method and a device for use in variable-pitch control of a wind turbine, in said method: if a current wind speed is continuously maintained at a small wind speed, then periodically detecting whether a maintained duration of a current pitch angle of a wind turbine reaches a preset duration; once the preset duration is reached, switching a current minimum pitch angle to another minimum pitch angle.