Patents by Inventor Haruka MATSUO

Haruka MATSUO 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).

  • Patent number: 11611306
    Abstract: A motor driving apparatus for driving a single-phase motor includes an inverter disposed between a battery and the single-phase motor, the inverter applying a first voltage to the single-phase motor at startup and applying a second voltage to the single-phase motor during a normal operation. A stop time period is present after application of the first voltage, application of the first voltage being stopped during the stop time period, and the inverter applies the second voltage after a lapse of the stop time period.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 21, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Takayama, Haruka Matsuo, Kazunori Hatakeyama
  • Publication number: 20220131492
    Abstract: A motor driving apparatus for driving a single-phase motor includes an inverter disposed between a battery and the single-phase motor, the inverter applying a first voltage to the single-phase motor at startup and applying a second voltage to the single-phase motor during a normal operation. A stop time period is present after application of the first voltage, application of the first voltage being stopped during the stop time period, and the inverter applies the second voltage after a lapse of the stop time period.
    Type: Application
    Filed: April 11, 2019
    Publication date: April 28, 2022
    Inventors: Yuji TAKAYAMA, Haruka MATSUO, Kazunori HATAKEYAMA
  • Patent number: 11316465
    Abstract: A motor drive device includes a single-phase inverter that converts a direct-current voltage output from a power supply which is a battery, into an alternating-current voltage. The inverter outputs the alternating-current voltage as an applied voltage to be applied to a motor. The applied voltage is lower when the direct-current voltage is a second voltage lower than a first voltage than when the direct-current voltage is the first voltage. Consequently, a discharge current of the battery is reduced, and the motor drive device capable of reducing an increase in battery temperature can be obtained.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 26, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Takayama, Kazunori Hatakeyama, Haruka Matsuo
  • Publication number: 20210111655
    Abstract: A motor drive device includes a single-phase inverter that converts a direct-current voltage output from a power supply which is a battery, into an alternating-current voltage. The inverter outputs the alternating-current voltage as an applied voltage to be applied to a motor. The applied voltage is lower when the direct-current voltage is a second voltage lower than a first voltage than when the direct-current voltage is the first voltage. Consequently, a discharge current of the battery is reduced, and the motor drive device capable of reducing an increase in battery temperature can be obtained.
    Type: Application
    Filed: March 23, 2018
    Publication date: April 15, 2021
    Inventors: Yuji TAKAYAMA, Kazunori HATAKEYAMA, Haruka MATSUO
  • Publication number: 20210091641
    Abstract: An electric blower includes a fan, a motor to drive the fan, a first board including at least one switching element, and a second board including a microcomputer. The motor, first board, and second board are arranged in this order in a blowing direction of the fan.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 25, 2021
    Inventors: Kazunori HATAKEYAMA, Yuji TAKAYAMA, Haruka MATSUO
  • Publication number: 20210052125
    Abstract: An electric blower includes a fan, and a board disposed in an airflow path of the fan and including a switching element. The board includes a lead wire projecting into the airflow path.
    Type: Application
    Filed: March 23, 2018
    Publication date: February 25, 2021
    Inventors: Haruka MATSUO, Yuji TAKAYAMA, Kazunori HATAKEYAMA
  • Publication number: 20210050811
    Abstract: A motor drive device includes a single-phase inverter which is an inverter including a plurality of switching elements. The inverter converts a direct-current voltage output from a direct-current power supply into an alternating-current voltage, by operation of the plurality of switching elements operating, and applies the alternating-current voltage to a motor. The motor drive device includes a control power supply outputting power having a voltage lower than the direct-current voltage, by using the direct-current voltage. The motor drive device includes a drive signal generation unit driven by the power. The drive signal generation unit generates drive signals driving the plurality of switching elements, and outputs the generated drive signals to the plurality of switching elements. The motor drive device includes a power supply switch operating so as to allow supply of the power from the control power supply to the drive signal generation unit when a rotation speed of the motor is higher than a threshold.
    Type: Application
    Filed: March 23, 2018
    Publication date: February 18, 2021
    Inventors: Yuji TAKAYAMA, Haruka MATSUO, Kazunori HATAKEYAMA, Tomoyuki KAMIYAMA, Takuya FURUYAMA, Masami YORITA, Takanobu KONDO
  • Publication number: 20200358378
    Abstract: A motor drive device includes a single-phase inverter converting a direct-current voltage output from a power supply that is a direct-current power supply into an alternating-current voltage having a high level, low level, or zero level potential. The inverter outputs the alternating-current voltage as a motor applied voltage to be applied to a motor. The alternating-current voltage is a voltage that has a high level, low level, or zero level potential. When a rotation speed of the motor is to be reduced, a section in which a potential of the motor applied voltage is zero level is widened.
    Type: Application
    Filed: March 23, 2018
    Publication date: November 12, 2020
    Inventors: Yuji TAKAYAMA, Haruka MATSUO, Kazunori HATAKEYAMA