Patents by Inventor Kuang-Ping Li

Kuang-Ping Li 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).

  • Control method of an uninterruptible power supply for extending a discharge time under a no-load condition
    Patent number: 8760005
    Abstract: A control method of an uninterruptible power supply (UPS) for extending a discharge time under a no-load condition instructs a battery of the UPS to discharge by repeating an alternate on and off cycle when the UPS enters a battery mode and after a no-load condition continues over a period of time so that the UPS alternately and repeatedly discharges and stops discharging based on the alternate on and off cycle, and detects if the no-load condition is not present during the discharging period. If not present, the battery is restored to continuously discharge. Additionally, the discharge voltage can be reduced during the discharging period to alleviate the power discharged under the no-load condition. Accordingly, the control method can reduce to discharge under the no-load condition and further extend a discharge time under a no-load condition.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 24, 2014
    Assignee: Cyber Power Systems Inc.
    Inventors: Yung-Mei Lin, Kuang-Ping Li
  • CONTROL METHOD OF AN UNINTERRUPTIBLE POWER SUPPLY FOR EXTENDING A DISCHARGE TIME UNDER A NO-LOAD CONDITION
    Publication number: 20120299382
    Abstract: A control method of an uninterruptible power supply (UPS) for extending a discharge time under a no-load condition instructs a battery of the UPS to discharge by repeating an alternate on and off cycle when the UPS enters a battery mode and after a no-load condition continues over a period of time so that the UPS alternately and repeatedly discharges and stops discharging based on the alternate on and off cycle, and detects if the no-load condition is not present during the discharging period. If not present, the battery is restored to continuously discharge. Additionally, the discharge voltage can be reduced during the discharging period to alleviate the power discharged under the no-load condition. Accordingly, the control method can reduce to discharge under the no-load condition and further extend a discharge time under a no-load condition.
    Type: Application
    Filed: May 26, 2011
    Publication date: November 29, 2012
    Inventors: Yung-Mei LIN, Kuang-Ping Li