Patents by Inventor William Cesar De Andrade Pereira

William Cesar De Andrade Pereira 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).

  • METHOD FOR INCREASING THE EFFICIENCY OF HERMETIC COMPRESSORS USED IN REFRIGERATION AND AIR CONDITIONING
    Publication number: 20210340975
    Abstract: The present invention relates to a speed control system for hermetic compressors of the variable speed type, which uses a PMSM motor, containing a strategy for optimization, or minimization, of the electric current. Once the minimum current has been defined to meet a given demand for torque, it is applied to the hermetic compressor motor, which will operate at the maximum efficiency point for each load point.
    Type: Application
    Filed: October 18, 2019
    Publication date: November 4, 2021
    Applicant: TECUMSEH DO BRASIL LTDA.
    Inventors: Mario Luis Botega, JR., William Cesar De Andrade Pereira