Patents by Inventor Hanako KUBOTA

Hanako KUBOTA 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 drive control system
    Patent number: 9203329
    Abstract: Included are: a voltage command generation unit which generates a voltage command amplitude and a voltage command phase based on a current command value; a phase generation unit during rectangular wave energization, which generates a voltage command phase during rectangular wave energization; and a control switching determination unit which switches by determining as to which control of PWM energization or rectangular wave energization will be performed depending on the amount of the condition of a motor. A switching device unit is driven by the output from a PWM energization unit when switched to the PWM energization; and the switching device unit is driven by the output from a rectangular wave energization unit when switched to the rectangular wave energization. The voltage command generation unit calculates the voltage command amplitude and the voltage command phase by using parameters of the motor.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: December 1, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryo Nakamura, Hanako Kubota, Kazuhiro Nishiwaki
  • MOTOR DRIVE CONTROL SYSTEM
    Publication number: 20140306629
    Abstract: Included are: a voltage command generation unit which generates a voltage command amplitude and a voltage command phase based on a current command value; a phase generation unit during rectangular wave energization, which generates a voltage command phase during rectangular wave energization; and a control switching determination unit which switches by determining as to which control of PWM energization or rectangular wave energization will be performed depending on the amount of the condition of a motor. A switching device unit is driven by the output from a PWM energization unit when switched to the PWM energization; and the switching device unit is driven by the output from a rectangular wave energization unit when switched to the rectangular wave energization. The voltage command generation unit calculates the voltage command amplitude and the voltage command phase by using parameters of the motor.
    Type: Application
    Filed: January 13, 2014
    Publication date: October 16, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryo NAKAMURA, Hanako KUBOTA, Kazuhiro NISHIWAKI