Patents by Inventor TOSHIKI TUBOUCHI

TOSHIKI TUBOUCHI 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 device and brushless motor equipped with same, and air conditioner
    Patent number: 9584050
    Abstract: A motor drive device of the present invention includes a speed signal generator that generates a rotation speed signal indicating rotation speed; a PWM signal generator that acts on the power switch unit to control the power switch unit so as to generate coil-applied voltage; and a phase advance information generator that has characteristic curve information representing changes of rotation speed of and load on a brushless motor, preliminarily set. The phase advance information generator generates phase advance information according to the load characteristic curve to variably control the phase advance (the phase of voltage applied to the coils of the brushless motor, relative to the induced voltage phase) according to the load characteristic curve.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: February 28, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiki Tubouchi, Tomoya Hosokawa, Yasushi Kato
  • MOTOR DRIVE DEVICE AND BRUSHLESS MOTOR EQUIPPED WITH SAME, AND AIR CONDITIONER
    Publication number: 20150357947
    Abstract: A motor drive device of the present invention includes a speed signal generator that generates a rotation speed signal indicating rotation speed; a PWM signal generator that acts on the power switch unit to control the power switch unit so as to generate coil-applied voltage; and a phase advance information generator that has characteristic curve information representing changes of rotation speed of and load on a brushless motor, preliminarily set. The phase advance information generator generates phase advance information according to the load characteristic curve to variably control the phase advance (the phase of voltage applied to the coils of the brushless motor, relative to the induced voltage phase) according to the load characteristic curve.
    Type: Application
    Filed: December 10, 2013
    Publication date: December 10, 2015
    Inventors: TOSHIKI TUBOUCHI, TOMOYA HOSOKAWA, YASUSHI KATO