Patents by Inventor Nihal Aluthwela Domingo Vithanage Kularatna

Nihal Aluthwela Domingo Vithanage Kularatna 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).

  • Digital control for controlling and linearizing an AC impedance
    Patent number: 9136771
    Abstract: An apparatus for regulating AC power of a power source in a power circuit is provided. The apparatus includes a full-wave bridge rectifier, a power transistor array, and a controller. The full-wave bridge rectifier is configured to receive an AC input put from the power source. The power transistor array is connected to the full-wave bridge rectifier. The power transistor array is configured to receive the AC input from the full-wave bridge rectifier and to generate an AC signal. The power transistor array may include only a single transistor or a plurality of transistors connected in series, for example. The controller is connected to the power transistor array. The controller is configured to receive the AC signal from the power transistor array, or the output of the AC regulator in some embodiments, and to determine a correction output to send to the power transistor array to control an AC impedance of the power circuit to generate an AC output.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 15, 2015
    Assignee: WaikatoLink Limited
    Inventors: Nihal Aluthwela Domingo Vithanage Kularatna, Mutunacharige Damayanthi Chandani Srimathi Kumari Jinadasa
  • DIGITAL CONTROL FOR CONTROLLING AND LINEARIZING AN AC IMPEDANCE
    Publication number: 20110038186
    Abstract: An apparatus for regulating AC power of a power source in a power circuit is provided. The apparatus includes a full-wave bridge rectifier, a power transistor array, and a controller. The full-wave bridge rectifier is configured to receive an AC input put from the power source. The power transistor array is connected to the full-wave bridge rectifier. The power transistor array is configured to receive the AC input from the full-wave bridge rectifier and to generate an AC signal. The power transistor array may include only a single transistor or a plurality of transistors connected in series, for example. The controller is connected to the power transistor array. The controller is configured to receive the AC signal from the power transistor array, or the output of the AC regulator in some embodiments, and to determine a correction output to send to the power transistor array to control an AC impedance of the power circuit to generate an AC output.
    Type: Application
    Filed: April 29, 2009
    Publication date: February 17, 2011
    Inventors: Nihal Aluthwela Domingo Vithanage Kularatna, Mutunacharige Damayanthi Chandani Srimathi Kumani Jinadasa