Patents by Inventor David Allen Torrey

David Allen Torrey 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).

  • Dual motor drive for electric submersible pump systems
    Patent number: 9903373
    Abstract: An electric submersible pump (ESP) control system includes a primary variable frequency drive (VFD), a transformer, and a secondary VFD. The primary variable frequency drive (VFD) is configured to receive power from a power source and output a variable voltage and variable amplitude AC voltage. The transformer has a low voltage side and a high voltage side of the transformer. The primary VFD is coupled to the low voltage side. The transformer is configured to receive the AC voltage from the primary VFD and output a stepped up AC voltage. The secondary VFD is coupled to the high voltage side of the transformer, wherein the secondary VFD is configured to provide a supplemental voltage in addition to the stepped up AC voltage when the operational values of an electric motor exceed a threshold value.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: February 27, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Nathaniel Benedict Hawes, Kum Kang Huh, David Allen Torrey, Di Pan, Tomas Sadilek
  • DUAL MOTOR DRIVE FOR ELECTRIC SUBMERSIBLE PUMP SYSTEMS
    Publication number: 20170146015
    Abstract: An electric submersible pump (ESP) control system includes a primary variable frequency drive (VFD), a transformer, and a secondary VFD. The primary variable frequency drive (VFD) is configured to receive power from a power source and output a variable voltage and variable amplitude AC voltage. The transformer has a low voltage side and a high voltage side of the transformer. The primary VFD is coupled to the low voltage side. The transformer is configured to receive the AC voltage from the primary VFD and output a stepped up AC voltage. The secondary VFD is coupled to the high voltage side of the transformer, wherein the secondary VFD is configured to provide a supplemental voltage in addition to the stepped up AC voltage when the operational values of an electric motor exceed a threshold value.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 25, 2017
    Inventors: Nathaniel Benedict Hawes, Kum Kang Huh, David Allen Torrey, Di Pan, Tomas Sadilek