Patents by Inventor Min-Hsien HO

Min-Hsien HO 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).

  • Device and method for controlling rotary electric machine
    Patent number: 11863107
    Abstract: A control device for controlling a rotary electric machine, the control device includes a current command unit, a voltage conversion device, a current conversion device, a signal demodulation device, an error compensation unit, an adding device and a position estimation device. The current command unit provides a d-axis current command and a q-axis current command. The current conversion device converts a current of the rotary electric machine to a synchronous reference coordinate current. The signal demodulation device computes a current variation of a high-frequency synchronous reference coordinate current. The error compensation device outputs a first correction value. The adding device adds the current variation of the high-frequency synchronous reference coordinate current and the first correction value to generate a second correction value.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: January 2, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Min-Hsien Ho, Ming-Tsung Chen, Yu-Ling Lee
  • DEVICE AND METHOD FOR CONTROLLING ROTARY ELECTRIC MACHINE
    Publication number: 20200195176
    Abstract: A control device for controlling a rotary electric machine, the control device includes a current command unit, a voltage conversion device, a current conversion device, a signal demodulation device, an error compensation unit, an adding device and a position estimation device. The current command unit provides a d-axis current command and a q-axis current command. The current conversion device converts a current of the rotary electric machine to a synchronous reference coordinate current. The signal demodulation device computes a current variation of a high-frequency synchronous reference coordinate current. The error compensation device outputs a first correction value. The adding device adds the current variation of the high-frequency synchronous reference coordinate current and the first correction value to generate a second correction value.
    Type: Application
    Filed: May 13, 2019
    Publication date: June 18, 2020
    Inventors: Min-Hsien HO, Ming-Tsung CHEN, Yu-Ling LEE