Patents by Inventor Toshimitsu MORIZANE

Toshimitsu MORIZANE 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).

  • Power conversion apparatus, power conversion method, motor system, and two-phase induction motor
    Patent number: 8941350
    Abstract: A power conversion method including: receiving an input voltage which is a single-phase AC voltage; designating a first target voltage and a second target voltage respectively representing consecutive target values of a first-phase output voltage and a second-phase output voltage which form a two-phase AC voltage; cyclically connecting and disconnecting a pair of input terminals and a pair of first output terminals at a duty cycle corresponding to a ratio |ref1/in| during a time period in which an instantaneous absolute value of the input voltage is greater than an instantaneous absolute value of the first target voltage; and cyclically connecting and disconnecting the pair of the input terminals and a pair of second output terminals at a duty cycle corresponding to a ratio |ref2/in| during time periods in which the instantaneous absolute value of the input voltage is greater than an instantaneous absolute value of the second target voltage.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: January 27, 2015
    Assignee: Panasonic Corporation
    Inventors: Nobuyuki Otsuka, Yuji Kudoh, Toshimitsu Morizane
  • POWER CONVERSION APPARATUS, POWER CONVERSION METHOD, MOTOR SYSTEM, AND TWO-PHASE INDUCTION MOTOR
    Publication number: 20130307463
    Abstract: A power conversion method including: receiving an input voltage which is a single-phase AC voltage; designating a first target voltage and a second target voltage respectively representing consecutive target values of a first-phase output voltage and a second-phase output voltage which form a two-phase AC voltage; cyclically connecting and disconnecting a pair of input terminals and a pair of first output terminals at a duty cycle corresponding to a ratio |ref1/in| during a time period in which an instantaneous absolute value of the input voltage is greater than an instantaneous absolute value of the first target voltage; and cyclically connecting and disconnecting the pair of the input terminals and a pair of second output terminals at a duty cycle corresponding to a ratio |ref2/in| during time periods in which the instantaneous absolute value of the input voltage is greater than an instantaneous absolute value of the second target voltage.
    Type: Application
    Filed: July 29, 2013
    Publication date: November 21, 2013
    Applicant: Panasonic Corporation
    Inventors: Nobuyuki OTSUKA, Yuji KUDOH, Toshimitsu MORIZANE