Patents by Inventor Junxi CAI

Junxi CAI 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).

  • ELECTRIC MOTOR DRIVE WITH GALLIUM NITRIDE POWER SWITCHES
    Publication number: 20190260325
    Abstract: A motor drive for providing AC power to an electric motor includes a DC bus and three output terminals for connection to the electric motor. A positive switch selectively connects a positive conductor of the DC bus with each of the output terminals and a negative switch selectively connects a negative conductor of the DC bus with each of the output terminals. Each of the switches are Gallium Nitride (GaN) power switches. A controller commands each of the switches at a high switching speed between 10 kHz and 100 kHz using pulse width modulation to approximate an AC waveform on each of the output terminals. A dead time between activation of corresponding two of the switches conn to be selected to minimize a fifth-order harmonic distortion current.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 22, 2019
    Inventors: Jiangbo TIAN, Chunyan LAI, Junxi CAI, Narayan Chandra KAR, Debmalya BANERJEE, Ze LI, Jasmin Jijina SINKULAR, Lakshmi Varaha IYER