Patents by Inventor Tzen Woo THAM

Tzen Woo THAM 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).

  • Storage battery control device, storage battery control method, and storage battery control system
    Patent number: 9685799
    Abstract: A storage battery controller includes a charging/discharging rate setter which sets a rate at which the battery is charged/discharged to approximate the power system frequency to rated frequency; and a charge and discharge controller which controls charge and discharge of the battery, in which the gain adjuster: when the measured charge level is lower than a lower limit of a normal range and the obtained power system frequency is within a first non-sensitive zone ranging from a first frequency lower than the rated frequency to the rated frequency, decreases the charging rate to a predetermined percentage of the charging rate; and when the measured frequency is higher than an upper limit of the normal range and the obtained power system frequency is within a second non-sensitive zone ranging from a second frequency higher than the rated frequency to the rated frequency, adjusts the discharging rate to decrease the discharging rate.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 20, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Mitsuru Kaji, Tzen Woo Tham
  • STORAGE BATTERY CONTROL DEVICE, STORAGE BATTERY CONTROL METHOD, AND STORAGE BATTERY CONTROL SYSTEM
    Publication number: 20160352114
    Abstract: A storage battery controller includes a charging/discharging rate setter which sets a rate at which the battery is charged/discharged to approximate the power system frequency to rated frequency; and a charge and discharge controller which controls charge and discharge of the battery, in which the gain adjuster: when the measured charge level is lower than a lower limit of a normal range and the obtained power system frequency is within a first non-sensitive zone ranging from a first frequency lower than the rated frequency to the rated frequency, decreases the charging rate to a predetermined percentage of the charging rate; and when the measured frequency is higher than an upper limit of the normal range and the obtained power system frequency is within a second non-sensitive zone ranging from a second frequency higher than the rated frequency to the rated frequency, adjusts the discharging rate to decrease the discharging rate.
    Type: Application
    Filed: March 14, 2014
    Publication date: December 1, 2016
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Mitsuru KAJI, Tzen Woo THAM