Patents by Inventor Milan M R Rajne

Milan M R Rajne 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).

  • Common mode filter for motor controllers
    Patent number: 8115444
    Abstract: A motor drive circuit has a converter for coupling to an AC voltage source and an inverter coupled to the converter for providing a drive current for a motor. A common mode circulation loop is coupled to the converter and to the inverter, and circulates common mode current from both the converter and the inverter.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 14, 2012
    Assignee: Honeywell International, Inc.
    Inventors: Sukumar De, Kamalesh Hatua, Milan M R Rajne
  • Short circuit protection by gate voltage sensing
    Patent number: 7463079
    Abstract: A protection circuit monitors the gate voltage of an insulated gate bipolar transistor (IGBT) or metal oxide semiconductor field effect transistor (MOSFET) to protect the transistor during a time when it is being turned on. In one embodiment, the circuit monitors a transient gate voltage of the transistor when it is turned on. A short or overcurrent condition is detected when the gate voltage exceeds a delayed reference signal.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: December 9, 2008
    Assignee: Honeywell International Inc.
    Inventors: Sukumar De, Kamalesh Hatua, Milan M R Rajne