Patents by Inventor MATHEUS A. BEVILAQUA

MATHEUS A. BEVILAQUA 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).

  • Determination of magnetic flux and temperature of permanent magnets in washing machine motor
    Patent number: 9000699
    Abstract: According to one illustrative embodiment, a washing machine comprises a motor including a plurality of coils and one or more permanent magnets, an inverter configured to supply current to the plurality of coils and to measure a back electromotive force (BEMF) waveform from the plurality of coils, and an electronic control unit (ECU) configured to (i) integrate the BEMF waveform to generate an integrated BEMF waveform, (ii) determine a magnetic flux of the one or more permanent magnets using an amplitude of the integrated BEMF waveform, and (iii) control the current supplied by the inverter based at least in part upon the determined magnetic flux.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 7, 2015
    Assignee: Whirlpool Corporation
    Inventors: Matheus A. Bevilaqua, Luiz V. Dokonal, Evandro J. Meurer, Fernando P. Silva, Marcelo C. Silva, Rodrigo S. Teixeira
  • DETERMINATION OF MAGNETIC FLUX AND TEMPERATURE OF PERMANENT MAGNETS IN WASHING MACHINE MOTOR
    Publication number: 20130119905
    Abstract: According to one illustrative embodiment, a washing machine comprises a motor including a plurality of coils and one or more permanent magnets, an inverter configured to supply current to the plurality of coils and to measure a back electromotive force (BEMF) waveform from the plurality of coils, and an electronic control unit (ECU) configured to (i) integrate the BEMF waveform to generate an integrated BEMF waveform, (ii) determine a magnetic flux of the one or more permanent magnets using an amplitude of the integrated BEMF waveform, and (iii) control the current supplied by the inverter based at least in part upon the determined magnetic flux.
    Type: Application
    Filed: November 10, 2011
    Publication date: May 16, 2013
    Applicant: WHIRLPOOL CORPORATION
    Inventors: MATHEUS A. BEVILAQUA, LUIZ V. DOKONAL, EVANDRO J. MEURER, FERNANDO P. SILVA, MARCELO C. SILVA, RODRIGO S. TEIXEIRA