Patents by Inventor Chenzhi QU

Chenzhi QU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Yaw calibration method and system for wind turbine
    Patent number: 11401913
    Abstract: The disclosure proposes a yaw calibration method and system for a wind turbine. The calibration method includes: establishing a cylindrical coordinate graph of wind resource distribution based on historical wind farm operation data, to determine a wind direction interval of main inflow wind conditions of a wind farm; calculating an effective value of active power of each wind speed sub-interval, and obtaining a fitted power curve of each refined interval through curve fitting; and setting an angle between a central axis of a refined interval for a fitted power curve corresponding to a calibration curve in each wind speed range and a central axis of the to-be-calibrated wind direction interval as a yaw error calibration value in the wind speed range, to establish a wind speed-yaw error calibration value lookup table; and determining a yaw error calibration value under a current wind direction and a current wind.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: August 2, 2022
    Assignees: North China Electric Power University, Guodian New Energy Technology Research Institute Co., Ltd.
    Inventors: Zhongwei Lin, Chenzhi Qu, Chuanxi Wang, Zhenyu Chen, Xiangyu Han, Zhen Xie, Qingru Cui, Gengda Li, Xiongwei Li
  • YAW CALIBRATION METHOD AND SYSTEM FOR WIND TURBINE
    Publication number: 20210148331
    Abstract: The disclosure proposes a yaw calibration method and system for a wind turbine. The calibration method includes: establishing a cylindrical coordinate graph of wind resource distribution based on historical wind farm operation data, to determine a wind direction interval of main inflow wind conditions of a wind farm; calculating an effective value of active power of each wind speed sub-interval, and obtaining a fitted power curve of each refined interval through curve fitting; and setting an angle between a central axis of a refined interval for a fitted power curve corresponding to a calibration curve in each wind speed range and a central axis of the to-be-calibrated wind direction interval as a yaw error calibration value in the wind speed range, to establish a wind speed-yaw error calibration value lookup table; and determining a yaw error calibration value under a current wind direction and a current wind.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 20, 2021
    Inventors: Zhongwei LIN, Chenzhi QU, Chuanxi WANG, Zhenyu CHEN, Xiangyu HAN, Zhen XIE, Qingru CUI, Gengda LI, Xiongwei LI