Patents by Inventor Jinichi TATSUNO

Jinichi TATSUNO 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).

  • MOTOR DRIVING METHOD
    Publication number: 20240154563
    Abstract: A control circuit has a three-phase modulation operation mode under which a three-phase modulation signal is output to an inverter circuit as a pulse width modulation signal, a two-phase modulation operation mode under which a two-phase modulation signal is output to the inverter circuit as the pulse width modulation signal, and a transitional operation mode under which one of the three-phase modulation operation mode and the two-phase modulation operation mode is switched to the other. The control circuit transitions to the transitional operation mode in response to a reference signal set in advance, and switches an operation by outputting to the inverter circuit, a transition modulation signal with a mixture ratio between the three-phase modulation signal and the two-phase modulation signal being gradually changed in a predetermined electrical angle interval unit.
    Type: Application
    Filed: October 13, 2023
    Publication date: May 9, 2024
    Inventors: Takaaki MATSUDA, Jinichi TATSUNO, Eiji HIRACHI