Patents by Inventor Nirmal Kumar Deb

Nirmal Kumar Deb 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).

  • Rotating electric machine for generating a constant frequency AC Power Supply from a variable speed primemover
    Patent number: 8593030
    Abstract: Disclosed is a rotating electric machine for generating a constant frequency AC power supply from a variable speed primemover including: a stator wound with two sets of isolated polyphase windings having the same number of poles, with the polyphase windings located at about 90 degree displacement in space between them, and a rotor wound with two sets of isolated polyphase windings having the same number of poles and placed at about 90 degree displacement in space between them. The rotor has two winding terminals interconnected either internally or externally to the machine with mutually reverse phase sequence. When one set of stator winding is energized by an AC power supply of a given frequency and voltage, and the rotor shaft is rotated by an external means in the same direction as that of the rotating field of the stator.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: November 26, 2013
    Inventors: Nikhil Mondal, Nirmal Kumar Deb, Sujit Kumar Biswas
  • Rotating Electric Machine for Generating a Constant Frequency AC Power Supply from a Variable Speed Primemover
    Publication number: 20120007459
    Abstract: Disclosed is a rotating electric machine for generating a constant frequency AC power supply from a variable speed primemover including: a stator wound with two sets of isolated polyphase windings having the same number of poles, with the polyphase windings located at about 90 degree displacement in space between them, and a rotor wound with two sets of isolated polyphase windings having the same number of poles and placed at about 90 degree displacement in space between them. The rotor has two winding terminals interconnected either internally or externally to the machine with mutually reverse phase sequence. When one set of stator winding is energized by an AC power supply of a given frequency and voltage, and the rotor shaft is rotated by an external means in the same direction as that of the rotating field of the stator.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 12, 2012
    Inventors: Nikhil Mondal, Nirmal Kumar Deb, Sujit Kumar Biswas