Patents by Inventor M N Lakshmi Prasad

M N Lakshmi Prasad 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).

  • Intelligent level transition systems and methods for transformerless uninterruptible power supply
    Patent number: 9214874
    Abstract: Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter. In an example, a UPS system includes an NPC inverter and a controller. The NPC inverter may supply power to a load. The controller may control the inverter to operate in a three-level mode or higher when the load is substantially balanced and to operate in a two-level mode when the load is substantially unbalanced.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: December 15, 2015
    Inventors: Yashomani Y. Kolhatkar, Silvio Colombi, Marco Piemontesi, Lauro Strozzi, M N Lakshmi Prasad
  • Intelligent Level Transition Systems and Methods for Transformerless Uninterruptible Power Supply
    Publication number: 20140036555
    Abstract: Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter. In an example, a UPS system includes an NPC inverter and a controller. The NPC inverter may supply power to a load. The controller may control the inverter to operate in a three-level mode or higher when the load is substantially balanced and to operate in a two-level mode when the load is substantially unbalanced.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Yashomani Y. Kolhatkar, Silvio Colombi, Marco Piemontesi, Lauro Strozzi, M N Lakshmi Prasad