Patents by Inventor Yosuke Shinomoto

Yosuke Shinomoto 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).

  • Publication number: 20190167051
    Abstract: A reliable electric vacuum cleaner is provided. An electric vacuum cleaner includes a housing, an electric blower, a battery, and a controller. The housing includes a first chamber, a second chamber, and a handle. The battery is held in the second chamber and supplies electric power for driving the electric blower. The controller controls the electric blower. A first distance from the handle to the battery is shorter than a second distance from the handle to the electric blower.
    Type: Application
    Filed: July 15, 2016
    Publication date: June 6, 2019
    Inventors: Yuji TAKAYAMA, Takashi YAMAKAWA, Yosuke SHINOMOTO
  • Publication number: 20190140575
    Abstract: A motor system according to the present invention includes: a motor including a first winding portion and a second winding portion, the second winding portion having a larger number of turns than the first winding portion; a first inverter connected to the first winding portion; and a second inverter connected to the second winding portion.
    Type: Application
    Filed: June 17, 2016
    Publication date: May 9, 2019
    Inventors: Shigeo UMEHARA, Koichi ARISAWA, Yosuke SHINOMOTO, Takashi YAMAKAWA, Shinya TOYODOME
  • Publication number: 20190140553
    Abstract: An AC/DC converter includes a first rectifier and a second rectifier each coupled to an AC power supply through the reactor; a switch arm, which includes two switches coupled in series with each other, arranged on an output side of the first rectifier; and two capacitors coupled in series with each other arranged on an output side of the second rectifier. A connection point between the two capacitors is coupled to a connection point between the two switches. Thus, the space for mounting circuit components can be reduced.
    Type: Application
    Filed: July 28, 2016
    Publication date: May 9, 2019
    Inventors: Keiichiro SHIZU, Yosuke SHINOMOTO
  • Patent number: 10281185
    Abstract: The invention includes an inverter to convert a direct-current voltage from a direct-current power supply into an alternating-current voltage and apply the alternating-current voltage to a motor that, a direct-current-voltage detecting unit to detect a voltage in the direct-current power supply, a current detecting unit to detect an electric current flowing to the inverter, and an inverter control unit to generate PWM signals for driving switching elements of the inverter based on the detected voltage the detected electric current, to set a specific phase difference between a phase of a carrier signal used for generation of the PWM signals and a phase of the alternating-current voltage, and to control the inverter such that a frequency of the PWM signals are synchronized with a frequency of the alternating-current voltage, the frequency of the PWM signals being an integer multiple of three times the frequency of the alternating-current voltage.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: May 7, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Uemura, Kazunori Hatakeyama, Yosuke Shinomoto, Koichi Arisawa
  • Patent number: 10270380
    Abstract: A power converting apparatus includes: an inverter converting a direct-current voltage supplied from a power supply unit into an alternating-current voltage and outputting the alternating-current voltage to a motor; and an inverter control unit outputting synchronous PWM (Pulse Width Modulation) signals for driving switching elements of the inverter. A frequency of the synchronous PWM signals is periodically varied when periodic pulsation occurs in a load connected to the motor.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: April 23, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Uemura, Kazunori Hatakeyama, Yosuke Shinomoto, Takahiko Kobayashi, Yasuhiko Wada
  • Publication number: 20190097563
    Abstract: A motor drive apparatus which drives a motor includes inverter modules equal in number to phases of the motor. Each of the inverter modules includes a plurality of switching element pairs. Each of the switching element pairs is defined by two switching elements connected in series. In each of the inverter modules, the plurality of switching element pairs are connected in parallel, and each of resistance values of gate resistors connected to the switching elements is set for the corresponding switching element connected thereto.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 28, 2019
    Inventors: Takuya SHIMOMUGI, Yosuke SHINOMOTO, Katsuhiko SAITO, Norikazu ITO
  • Publication number: 20190089266
    Abstract: In a power converter, modules are electrically interconnected by a busbar and joint members. Each joint member has a connecting portion formed on one side and a connecting portion formed on the other side, with respect to a bisector bisecting the width. The busbar has a connecting portion on one side with respect to a bisector bisecting the width. For a 200 V power supply specification, one end of each of two busbars is fixed to one joint member. For a 400 V power supply specification, one end of one busbar is fixed to one joint member.
    Type: Application
    Filed: April 28, 2016
    Publication date: March 21, 2019
    Inventors: Kenji IWAZAKI, Koichi ARISAWA, Yosuke SHINOMOTO
  • Patent number: 10211765
    Abstract: A motor control device includes a position sensor that detects a position of a motor, an AD converter that converts an analog signal, which is a detection value of a motor current, into a digital signal, and a control circuit that drives an inverter using an output signal of the AD converter. The control circuit starts the AD converter during a permission period, and performs processing for the analog-digital converter during an electrical half cycle including a permission period. The length of a prohibition period obtained by excluding a permission period from an electrical half cycle decreases as the rotating speed of the motor increases.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: February 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koichi Arisawa, Keisuke Uemura, Yuji Takayama, Yosuke Shinomoto
  • Patent number: 10177703
    Abstract: A leak-current detecting unit detects a zero-phase current flowing from an electric-motor driving device, which drives an electric motor with electric power from an alternating-current power supply, or the electric motor to a ground, a leak-current control unit that, on the basis of the zero-phase current detected by the leak-current detecting unit, generates a control signal having cyclicity synchronized with the alternating-current power supply, and an anti-phase generating unit that generates an anti-phase current that is in anti-phase to the zero-phase current on the basis of the control signal from the leak-current control unit, and outputs the anti-phase current.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 8, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yosuke Shinomoto, Koichi Arisawa, Takashi Yamakawa, Yuji Takayama
  • Publication number: 20180351483
    Abstract: A motor control device includes a position sensor that detects a position of a motor, an AD converter that converts an analog signal, which is a detection value of a motor current, into a digital signal, and a control circuit that drives an inverter using an output signal of the AD converter. The control circuit starts the AD converter during a permission period, and performs processing for the analog-digital converter during an electrical half cycle including a permission period. The length of a prohibition period obtained by excluding a permission period from an electrical half cycle decreases as the rotating speed of the motor increases.
    Type: Application
    Filed: October 30, 2015
    Publication date: December 6, 2018
    Inventors: Koichi ARISAWA, Keisuke UEMURA, Yuji TAKAYAMA, Yosuke SHINOMOTO
  • Patent number: 10128775
    Abstract: A motor drive apparatus driving a motor as a three-phase motor converting direct current into three-phase alternating current, includes: inverter modules and equivalent in number to phases of the motor; and a control unit generating PWM signals used to drive the inverter modules with PWM. The inverter modules each include a plurality of switching element pairs connected in parallel, each of the switching element pairs including two switching elements connected in series.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: November 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Shimomugi, Yosuke Shinomoto, Koichi Arisawa, Kazunori Hatakeyama
  • Publication number: 20180316297
    Abstract: A motor driving apparatus according to the present invention is a motor driving apparatus that drives an electric blower including a single-phase PM motor. The motor driving apparatus includes: a single-phase inverter that applies an alternating-current voltage to the single-phase PM motor; a rotor position detecting unit 7 that outputs, to an inverter control unit, a position detecting signal which is a signal corresponding to a rotational position of a rotor of the single-phase PM motor; a motor current detecting unit that outputs, to the inverter control unit, a signal corresponding to a motor current flowing to the single-phase PM motor; and the inverter control unit that outputs a driving signal to corresponding one of switching elements of the single-phase inverter on the basis of the position detecting signal and the motor current.
    Type: Application
    Filed: November 2, 2015
    Publication date: November 1, 2018
    Inventors: Keisuke UEMURA, Yuji TAKAYAMA, Yosuke SHINOMOTO
  • Patent number: 10113784
    Abstract: A direct-current power supply device includes a switching unit constituted by a first switching element and a second switching element and a control unit that controls the operations of the first witching element and the second switching element. The switching unit has a first mode in which on-duty is a first value and a second mode in which the on-duty is a second value larger than the first value. When transitioning the switching unit from the first mode to the second mode, the control unit controls the switching unit such that the time until the on-duty reaches the second value is equal to or longer than a fixed time and controls, after the on-duty reaches the second value, an operation cycle of the switching unit to extend the operation cycle.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: October 30, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yosuke Shinomoto, Kazunori Hatakeyama, Shota Kamiya
  • Publication number: 20180301979
    Abstract: A circuit board accommodates a plurality of different source voltages. On the circuit board, a printed wire which constitutes a circuit is formed, a first circuit component used for a board which meets specifications for a first voltage or a second circuit component used for a board which meets specifications for a second voltage higher than the first voltage, is mounted, and spacing between adjacent printed wires is equal to or larger than a distance which secures an insulation distance when the second voltage is input.
    Type: Application
    Filed: December 28, 2015
    Publication date: October 18, 2018
    Inventors: Kenji IWAZAKI, Yosuke SHINOMOTO, Kazunori HATAKEYAMA
  • Publication number: 20180245831
    Abstract: The invention includes an inverter to convert a direct-current voltage from a direct-current power supply into an alternating-current voltage and apply the alternating-current voltage to a motor that rotationally drives a load, a direct-current-voltage detecting unit to detect a voltage in the direct-current power supply, a shunt resistance that is a current detecting unit to detect an electric current flowing to the inverter, and an inverter control unit to generate PWM signals for driving switching elements of the inverter on the basis of the voltage detected by the direct-current-voltage detecting unit and the electric current detected by the shunt resistance, to set a specific phase difference between a phase of a carrier signal used for generation of the PWM signals and a phase of the alternating-current voltage, and to control the inverter such that a frequency of the PWM signals are synchronized with a frequency of the alternating-current voltage, the frequency of the PWM signals being an integer multi
    Type: Application
    Filed: August 28, 2015
    Publication date: August 30, 2018
    Inventors: Keisuke UEMURA, Kazunori HATAKEYAMA, Yosuke SHINOMOTO, Koichi ARISAWA
  • Publication number: 20180241336
    Abstract: A power converting apparatus includes: an inverter converting a direct-current voltage supplied from a power supply unit into an alternating-current voltage and outputting the alternating-current voltage to a motor; and an inverter control unit outputting synchronous PWM (Pulse Width Modulation) signals for driving switching elements of the inverter. A frequency of the synchronous PWM signals is periodically varied when periodic pulsation occurs in a load connected to the motor.
    Type: Application
    Filed: September 4, 2015
    Publication date: August 23, 2018
    Inventors: Keisuke UEMURA, Kazunori HATAKEYAMA, Yosuke SHINOMOTO, Takahiko KOBAYASHI, Yasuhiko WADA
  • Patent number: 10056826
    Abstract: A direct-current power supply device is a direct-current power supply device that converts a three-phase alternating current to a direct current and supplies the direct current to a load, and includes a first capacitor and a second capacitor connected in series between output terminals to the load, a charge unit that selectively charges one or both of the first capacitor and the second capacitor, and a control unit that controls the charge unit. The control unit controls an output voltage of the direct-current power supply device by a charging period of the charge unit, and also controls a power factor and a harmonic current of the direct-current power supply device by a charge timing with respect to a reference phase of the three-phase alternating current of the charge unit as a reference.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: August 21, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Keisuke Uemura, Yosuke Shinomoto
  • Patent number: 10027268
    Abstract: A motor incorporating a power converter including a printed board on which a semiconductor module (an inverter IC), which converts a voltage of an external power supply into a high-frequency voltage and supplies the high-frequency voltage to a stator, is mounted, wherein a high-voltage circuit ground, which is a power ground of a high-voltage main circuit system of the inverter IC, and a low-voltage circuit ground, which is a ground of a control circuit system, which is a low-voltage circuit, of the semiconductor module, are provided on the board, and the high-voltage circuit ground and the low-voltage circuit ground are connected at one point via a resistor.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 17, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Michio Yamada, Yosuke Shinomoto, Hiroki Aso, Hiroyuki Ishii, Junichiro Oya
  • Patent number: 9960702
    Abstract: A switch device in a power conversion device is located between a power supply and a load, wherein the power conversion device includes a shunt resistance and a switching element and is capable of executing stable control, the switch device includes a switching element that includes a gate terminal, a gate drive circuit that applies a drive voltage Vcc to a gate terminal of the switching element, and a control unit that generates a drive signal to the gate drive circuit, wherein a value obtained by subtracting a threshold voltage Vth of the switching element from the drive voltage Vcc to be applied to the gate terminal of the switching element is greater than a product of a resistance value Rsh+Rdc from an emitter of the switching element to a negative electrode of the gate drive circuit and a maximum current value Ipeak that flows through the switching element.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 1, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Uemura, Takuya Shimomugi, Koichi Arisawa, Yosuke Shinomoto, Shigeo Umehara, Shinichiro Ura, Makoto Tanikawa
  • Patent number: 9960703
    Abstract: To provide a DC power-supply device that can suppress voltage unbalance of a plurality of capacitors serially connected between both terminals of a load, achieve stable drive of the load and long life of the capacitors, and contribute to high reliability, in a configuration in which an alternating current is converted into a direct current and is supplied to a load, and a refrigeration-cycle application device including the DC power-supply device. The DC power-supply device includes a rectifier circuit, a reactor connected to an input or an output side of the rectifier circuit, a first capacitor and a second capacitor serially connected between output terminals to a load, a charging unit that selectively charges one or both of the first capacitor and the second capacitor, and further includes a control unit that controls the charging unit so that voltage unbalance between the first capacitor and the second capacitor is suppressed.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: May 1, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Shota Kamiya, Yosuke Shinomoto