Patents by Inventor Giovanni ZANUSO

Giovanni ZANUSO 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 and device for detecting the presence of a permanent magnet of a rotor of a synchronous machine
    Patent number: 10291165
    Abstract: A method of detecting a permanent magnet rotor of a synchronous machine, includes: injecting a voltage waveform to the stator windings of the synchronous machine, measuring two phase currents in the stator winding, transforming the two phase currents to a rotor reference frame to obtain a current waveform, sampling the current waveform to obtain positive and negative portion values, constructing first and second periodic waveforms by using the sampled positive and negative portion values, performing a frequency analysis of a first and second spectrums of the periodic waveforms, and determining whether a permanent magnet is present in the synchronous machine based on the spectrums.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: May 14, 2019
    Assignee: ABB Schweiz AG
    Inventors: Paul Sandulescu, Giovanni Zanuso, Luca Peretti
  • Method And Device For Detecting The Presence Of A Permanent Magnet Of A Rotor Of A Synchronous Machine
    Publication number: 20180167010
    Abstract: A method of detecting a permanent magnet rotor of a synchronous machine, includes: injecting a voltage waveform to the stator windings of the synchronous machine, measuring two phase currents in the stator winding, transforming the two phase currents to a rotor reference frame to obtain a current waveform, sampling the current waveform to obtain positive and negative portion values, constructing first and second periodic waveforms by using the sampled positive and negative portion values, performing a frequency analysis of a first and second spectrums of the periodic waveforms, and determining whether a permanent magnet is present in the synchronous machine based on the spectrums.
    Type: Application
    Filed: November 2, 2017
    Publication date: June 14, 2018
    Inventors: Paul SANDULESCU, Giovanni ZANUSO, Luca PERETTI