Patents by Inventor Charles-Lizhi Zhu

Charles-Lizhi Zhu 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).

  • Multi-stage switching power supply
    Patent number: 8125806
    Abstract: A multi-stage power supply uses a boost stage and an inverter stage to boost the voltage value of a DC power supply to a desired level, and then convert the power into an AC form. The multi-stage power supply additionally has a controller which can simultaneously control the boost stage and the inverter stage using counter-synchronous signals.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: February 28, 2012
    Assignee: Continental Automotive Systems US, Inc.
    Inventors: Kirk Nangreaves, Charles-Lizhi Zhu, Richard Joseph Hampo
  • Method For Determining Power Semiconductor Temperature
    Publication number: 20100322284
    Abstract: A method for determining power semiconductor operating temperatures uses a database of measured temperatures. Each temperature is associated with operating conditions and determined by laboratory testing in an environment indicative of operation of the power semiconductors actual operations.
    Type: Application
    Filed: April 26, 2010
    Publication date: December 23, 2010
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS US, INC.
    Inventors: Charles Lizhi Zhu, Ajay V. Patwardhan, Fred Flett, Matthew R. Obrigkeit
  • MULTI-STAGE SWITCHING POWER SUPPLY
    Publication number: 20090190380
    Abstract: A multi-stage power supply uses a boost stage and an inverter stage to boost the voltage value of a DC power supply to a desired level, and then convert the power into an AC form. The multi-stage power supply additionally has a controller which can simultaneously control the boost stage and the inverter stage using counter-synchronous signals.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 30, 2009
    Inventors: Kirk Nangreaves, Charles-Lizhi Zhu, Richard Joseph Hampo