Patents by Inventor George W. Ott, Jr.

George W. Ott, Jr. 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).

  • Delta connected resonant snubber circuit
    Patent number: 5710698
    Abstract: A delta connected, resonant snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the dc supply voltage through the main inverter switches and the auxiliary switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: Jih-Sheng Lai, Fang Zheng Peng, Robert W. Young, Sr., George W. Ott, Jr.
  • Resonant snubber inverter
    Patent number: 5642273
    Abstract: A resonant, snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the main inverter switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: June 24, 1997
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Jih-Sheng Lai, Robert W. Young, Sr., Daoshen Chen, Matthew B. Scudiere, George W. Ott, Jr., Clifford P. White, John W. McKeever