Patents by Inventor Hironari Kimura

Hironari Kimura 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).

  • Short circuit phase identification method
    Patent number: 8054026
    Abstract: A vehicle drive apparatus includes a battery that is a direct current power source, a converter that increases the voltage of the battery, an inverter connected to a motor that drives the vehicle, an inverter connected to a motor generator that functions as a motor or generator, and a motor control device that controls the motor. The vehicle drive device is also provided with a voltmeter, non-energized state determination devices that determine a non-energized state of the inverters, and ammeters that detect currents applied to a motor from each phase arm of the inverters. Signals of these devices and a signal from the non-energized state determination device are sent to the motor control device.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: November 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoko Shimana, Hironari Kimura
  • SHORT CIRCUIT PHASE IDENTIFICATION METHOD
    Publication number: 20090284198
    Abstract: A vehicle drive apparatus includes a battery that is a direct current power source, a converter that increases the voltage of the battery, an inverter connected to a motor that drives the vehicle, an inverter connected to a motor generator that functions as a motor or generator, and a motor control device that controls the motor. The vehicle drive device is also provided with a voltmeter, non-energized state determination devices that determine a non-energized state of the inverters, and ammeters that detect currents applied to a motor from each phase arm of the inverters. Signals of these devices and a signal from the non-energized state determination device are sent to the motor control device.
    Type: Application
    Filed: May 15, 2009
    Publication date: November 19, 2009
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoko Shimana, Hironari Kimura