Patents by Inventor Yu-Ding HE

Yu-Ding HE 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).

  • Method for backing up and recovering blade zero point of pitch drive system for wind turbine and pitch drive system for wind turbine
    Patent number: 9453498
    Abstract: A pitch drive system for a wind turbine includes a pitch drive motor, a first position detector, a driver, a second position detector, and a controller. When the blades rotate to a mechanical zero position, a position value detected by the first position detector is a first zero point position value. The driver is operable to store the first zero point position value. When the blades rotate to the mechanical zero position, a position value detected by the second position detector is a second zero point position value. The controller is operable to store the second zero point position value. When a corresponding back up command is received, the first zero point position value stored in the driver is backed up into the controller, and the second zero point position value stored in the controller is backed up into the driver respectively.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 27, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yu-Ding He, Jian Wang, Hong-Yan Liu, Zhi-Guang Gao
  • METHOD FOR BACKING UP AND RECOVERING BLADE ZERO POINT OF PITCH DRIVE SYSTEM FOR WIND TURBINE AND PITCH DRIVE SYSTEM FOR WIND TURBINE
    Publication number: 20140064961
    Abstract: A pitch drive system for a wind turbine includes a pitch drive motor, a first position detector, a driver, a second position detector, and a controller. When the blades rotate to a mechanical zero position, a position value detected by the first position detector is a first zero point position value. The driver is operable to store the first zero point position value. When the blades rotate to the mechanical zero position, a position value detected by the second position detector is a second zero point position value. The controller is operable to store the second zero point position value. When a corresponding back up command is received, the first zero point position value stored in the driver is backed up into the controller, and the second zero point position value stored in the controller is backed up into the driver respectively.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 6, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Yu-Ding HE, Jian WANG, Hong-Yan LIU, Zhi-Guang GAO