Patents by Inventor Swee Yee Fonn

Swee Yee Fonn 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).

  • Permanent magnet generator inductance profile identification
    Patent number: 9438155
    Abstract: Parameters of PM machines, especially for IPM machine, are known to vary by significant amounts. This affects the controllability of such machines, which may lead to reduced power loading capability and increased losses. The present invention relates to a method for PM machine inductance profile identification based on voltage mode stator flux observation which could be easily integrated to the generator start-up process in wind turbine application for both stator flux vector feedback control system and current vector feedback control system.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: September 6, 2016
    Assignee: Vestas Wind Systems A/S
    Inventors: Shu Yu Cao, Anshuman Tripathi, Swee Yee Fonn, Ramasamy Anbarasu, Amit Kumar Gupta
  • Variable wind turbine having a power dissipating unit; a method of operating a power dissipating unit in a wind turbine
    Patent number: 9359996
    Abstract: A variable speed wind turbine is provided. The variable speed wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator, the power converter comprising a generator-side converter, a grid-side converter and a DC (direct current) link therebetween, a power dissipating unit operatively coupled to the DC-link, and a controller. The controller is adapted to receive a request to reduce power output from the wind turbine, determine a feed forward power signal based on a reference generator power and a desired turbine power, and operate the power dissipating unit based on the feed forward power signal.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: June 7, 2016
    Assignee: Vestas Wind Systems A/S
    Inventors: Amit Kumar Gupta, Gert Karmisholt Andersen, Swee Yee Fonn, Bing Li
  • VARIABLE WIND TURBINE HAVING A POWER DISSIPATING UNIT; A METHOD OF OPERATING A POWER DISSIPATING UNIT IN A WIND TURBINE
    Publication number: 20140145440
    Abstract: A variable speed wind turbine is provided. The variable speed wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator, the power converter comprising a generator-side converter, a grid-side converter and a DC (direct current) link therebetween, a power dissipating unit operatively coupled to the DC-link, and a controller. The controller is adapted to receive a request to reduce power output from the wind turbine, determine a feed forward power signal based on a reference generator power and a desired turbine power, and operate the power dissipating unit based on the feed forward power signal.
    Type: Application
    Filed: April 19, 2012
    Publication date: May 29, 2014
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Amit Kumar Gupta, Gert Karmisholt Andersen, Swee Yee Fonn, Bing Li
  • Controller arrangement of an electrical power transfer system of a wind turbine
    Patent number: 8631275
    Abstract: A controller arrangement of an electrical power transfer system (1) of a wind turbine is described. The wind turbine has an electrical generator and is connected to an electrical power grid, wherein the power transfer system (1) is arranged to transfer electrical power from the generator to the grid. The power transfer system (1) has at least two electrical elements (2-6), e.g. converters, and at least two controllers (15-17) each arranged to control at least one element (2-6).
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: January 14, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Gil Lampong Opina, Jr., Swee Yee Fonn, Anshuman Tripathi, Tze Yang Liaw, Amit Kumar Gupta
  • PERMANENT MAGNET GENERATOR INDUCTANCE PROFILE IDENTIFICATION
    Publication number: 20130265013
    Abstract: Parameters of PM machines, especially for IPM machine, are known to vary by significant amounts. This affects the controllability of such machines, which may lead to reduced power loading capability and increased losses. The present invention relates to a method for PM machine inductance profile identification based on voltage mode stator flux observation which could be easily integrated to the generator start-up process in wind turbine application for both stator flux vector feedback control system and current vector feedback control system.
    Type: Application
    Filed: December 28, 2012
    Publication date: October 10, 2013
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Shu Yu CAO, Anshuman TRIPATHI, Swee Yee FONN, Ramasamy ANBARASU, Amit Kumar GUPTA
  • CONTROLLER ARRANGEMENT OF AN ELECTRICAL POWER TRANSFER SYSTEM OF A WIND TURBINE
    Publication number: 20110106325
    Abstract: A controller arrangement of an electrical power transfer system (1) of a wind turbine is described. The wind turbine has an electrical generator and is connected to an electrical power grid, wherein the power transfer system (1) is arranged to transfer electrical power from the generator to the grid. The power transfer system (1) has at least two electrical elements (2-6), e.g. converters, and at least two controllers (15-17) each arranged to control at least one element (2-6).
    Type: Application
    Filed: December 28, 2010
    Publication date: May 5, 2011
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Gil Lampong Opina, JR., Swee Yee Fonn, Anshuman Tripathi, Tze Yang Liaw, Amit Kumar Gupta