Patents by Inventor Zepu Wang

Zepu Wang 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).

  • Barrier arrangement between transformer coil and core
    Patent number: 10366825
    Abstract: A transformer includes a core having first and second yokes and at least one leg extending between the first and second yokes. The at least one leg includes a coil assembly mounted thereto between the first and second yokes. An annular end barrier is provided at one or both ends of the coil assembly to provide a barrier between the adjacent yoke and a high voltage winding of the coil assembly.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 30, 2019
    Assignee: ABB Schweiz AG
    Inventor: Zepu Wang
  • BARRIER ARRANGEMENT BETWEEN TRANSFORMER COIL AND CORE
    Publication number: 20190035538
    Abstract: A transformer includes a core having first and second yokes and at least one leg extending between the first and second yokes. The at least one leg includes a coil assembly mounted thereto between the first and second yokes. An annular end barrier is provided at one or both ends of the coil assembly to provide a barrier between the adjacent yoke and a high voltage winding of the coil assembly.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 31, 2019
    Inventor: Zepu Wang
  • Barrier arrangement between transformer coil and core
    Patent number: 10102965
    Abstract: A transformer includes a core having first and second yokes and at least one leg extending between the first and second yokes. The at least one leg includes a coil assembly mounted thereto between the first and second yokes. An annular end barrier is provided at one or both ends of the coil assembly to provide a barrier between the adjacent yoke and a high voltage winding of the coil assembly.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: October 16, 2018
    Assignee: ABB Schweiz AG
    Inventor: Zepu Wang
  • BARRIER ARRANGEMENT BETWEEN TRANSFORMER COIL AND CORE
    Publication number: 20170352473
    Abstract: A transformer includes a core having first and second yokes and at least one leg extending between the first and second yokes. The at least one leg includes a coil assembly mounted thereto between the first and second yokes. An annular end barrier is provided at one or both ends of the coil assembly to provide a barrier between the adjacent yoke and a high voltage winding of the coil assembly.
    Type: Application
    Filed: June 6, 2016
    Publication date: December 7, 2017
    Inventor: Zepu Wang
  • Graphene oxide polymer with nonlinear resistivity
    Patent number: 9502150
    Abstract: The invention relates generally to field grading materials and, more particularly, to field grading materials including graphene oxide, reduced graphene oxide, or both, exhibiting non-linear resistivity. In one embodiment, the invention provides a composite material comprising: a polymer material; and reduced graphene oxide distributed within the polymer material.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: November 22, 2016
    Assignees: Rensselaer Polytechnic Institute, ABB AB
    Inventors: Zepu Wang, Linda S. Schadler, Henrik Hillborg, Su Zhao
  • ELECTRICAL TRANSFORMER BARRIER STRUCTURE
    Publication number: 20160314893
    Abstract: One or more electrical transformers comprising barrier structures for improved flashover resistance are provided herein. A barrier structure may be positioned between a higher voltage winding and a lower voltage winding, between the higher voltage winding and a core, or between two higher voltage windings of a multi-phase electrical transformer. The barrier structure may comprise a first material having a relatively lower permittivity value such as about 2.5 or less, which may provide improved flashover resistance. In an example, the barrier structure may comprise a second material having a relatively higher permittivity value such as about 2.5 or greater, which may provide improved puncture resistance.
    Type: Application
    Filed: April 27, 2015
    Publication date: October 27, 2016
    Inventor: Zepu Wang
  • GRAPHENE OXIDE POLYMER WITH NONLINEAR RESISTIVITY
    Publication number: 20150001448
    Abstract: The invention relates generally to field grading materials and, more particularly, to field grading materials including graphene oxide, reduced graphene oxide, or both, exhibiting non-linear resistivity. In one embodiment, the invention provides a composite material comprising: a polymer material; and reduced graphene oxide distributed within the polymer material.
    Type: Application
    Filed: August 31, 2012
    Publication date: January 1, 2015
    Applicants: ABB AB, RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Zepu Wang, Linda S. Schadler, Henrik Hillborg, Su Zhao