Patents by Inventor Zhenyu Ye

Zhenyu Ye 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).

  • Counter electromotive force estimation
    Patent number: 10756659
    Abstract: For counter electromotive force estimation, a disturbance estimator calculates an estimated disturbance as a control function of a quadrature axis current regulator output signal and a quadrature axis current feedback signal of a running permanent magnet motor. A calculator calculates an estimated counter electromotive force of the running permanent magnet motor as a function of the estimated disturbance, a control flux, and an angular velocity.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 25, 2020
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Bing Li, Timothy M. Rowan, Zhenyu Ye, Zhendong Zhang
  • Phase loss detection in active front end converters
    Patent number: 10263558
    Abstract: System, apparatus and methods are provided for identifying a phase loss condition in a motor drive. In one example, a power conversion system includes an active rectifier, a switching inverter, and a controller. The controller is operative to generate rectifier switching control signals to operate the rectifier, measure AC input voltage signals and determine grid current signals. If the rectifier circuit is not in a switching mode, the controller identifies a suspected AC input phase loss condition if two of the AC input voltage signals are in phase with one another. If the rectifier is in the switching mode, the controller identifies a suspected AC input phase loss condition if the absolute value of the sum of two of the grid current signals is less than a predetermined non-zero threshold.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 16, 2019
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Ahmed Mohamed Sayed Ahmed, Kanikesh Yedla, Zhenyu Ye, Prathamesh R. Vadhavkar
  • PHASE LOSS DETECTION IN ACTIVE FRONT END CONVERTERS
    Publication number: 20170272023
    Abstract: System, apparatus and methods are provided for identifying a phase loss condition in a motor drive. In one example, a power conversion system includes an active rectifier, a switching inverter, and a controller. The controller is operative to generate rectifier switching control signals to operate the rectifier, measure AC input voltage signals and determine grid current signals. If the rectifier circuit is not in a switching mode, the controller identifies a suspected AC input phase loss condition if two of the AC input voltage signals are in phase with one another. If the rectifier is in the switching mode, the controller identifies a suspected AC input phase loss condition if the absolute value of the sum of two of the grid current signals is less than a predetermined non-zero threshold.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Applicant: Rockwell Automation Technologies, Inc.
    Inventors: Ahmed Mohamed Sayed Ahmed, Kanikesh Yedla, Zhenyu Ye, Prathamesh R. Vadhavkar