Patents by Inventor Arinori Shimada

Arinori Shimada 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: 10404188
    Abstract: A power conversion device that includes an inverter circuit in which arms are connected in parallel to each other between a DC positive terminal and a DC negative terminal in accordance with a number of phases of alternating currents of the plurality of phases, the arms for respective phases each including two switch sections that are connected in series and to be brought into conduction in an on state and out of conduction in an off state, and a connection point between the two switch sections of each of the arms is set as an AC input or output point of each phase; and a controller that outputs switching control signals for performing switching control on the switch sections.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: September 3, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Subrata Saha, Arinori Shimada, Yutaka Hotta
  • Publication number: 20190214933
    Abstract: An inverter control device that controls an inverter as a control target, the inverter being connected to a direct-current power supply and connected to an alternating-current rotating electrical machine so as to convert power between direct current and alternating current of a plurality of phases, and the inverter having an arm for each alternating-current phase, the arm including a series circuit of an upper-stage switching element and a lower-stage switching element, the inverter control device including an electronic control unit.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 11, 2019
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA, Yuki SUGIYAMA, Masaya KOKUBO
  • Patent number: 10312827
    Abstract: A power conversion device that includes an inverter circuit in which arms are connected in parallel to each other between a DC positive terminal and a DC negative terminal in accordance with a number of phases of alternating currents of a plurality of phases, the arms for the respective phases each including two switch sections that are connected in series and to be brought into conduction in an on state and out of conduction in an off state, the power conversion device being configured to convert electric power between DC power and AC power of the plurality of phases while a connection point between the two switch sections of each of the arms is set as an AC input or output point of each phase.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: June 4, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Subrata Saha, Arinori Shimada, Yutaka Hotta
  • Publication number: 20180287510
    Abstract: A power conversion device that includes an inverter circuit in which arms are connected in parallel to each other between a DC positive terminal and a DC negative terminal in accordance with a number of phases of alternating currents of the plurality of phases, the arms for respective phases each including two switch sections that are connected in series and to be brought into conduction in an on state and out of conduction in an off state, and a connection point between the two switch sections of each of the arms is set as an AC input or output point of each phase; and a controller that outputs switching control signals for performing switching control on the switch sections.
    Type: Application
    Filed: November 7, 2016
    Publication date: October 4, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA, Yutaka HOTTA
  • Publication number: 20180278178
    Abstract: A power conversion device that includes an inverter circuit in which arms are connected in parallel to each other between a DC positive terminal and a DC negative terminal in accordance with a number of phases of alternating currents of a plurality of phases, the arms for the respective phases each including two switch sections that are connected in series and to be brought into conduction in an on state and out of conduction in an off state, the power conversion device being configured to convert electric power between DC power and AC power of the plurality of phases while a connection point between the two switch sections of each of the arms is set as an AC input or output point of each phase.
    Type: Application
    Filed: November 15, 2016
    Publication date: September 27, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA, Yutaka HOTTA
  • Patent number: 10003295
    Abstract: An inverter control device for controlling a rotating electric machine drive device that drives an alternating current rotating electric machine and includes an inverter and a DC link capacitor, the inverter being connected to a DC power supply via a contactor, being connected to the rotating electric machine, and performing power conversion between direct current and three-phase alternating current, the DC link capacitor smoothing a DC link voltage, which is a DC-side voltage of the inverter, and the inverter control device performing switching control on switching elements that form the inverter.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 19, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Subrata Saha, Arinori Shimada
  • Patent number: 9998052
    Abstract: The magnetic pole position of a rotary electric machine is electrically derived accurately by reducing a voltage error due to a dead time while suppressing the influence on the operation efficiency of the rotary electric machine. A control device performs dead-time compensation, and performs current feedback control in a d-q-axis vector coordinate system using a magnetic pole position computed on the basis of an induced voltage produced by rotation of a rotor or on the basis of a response component to a high-frequency observation signal applied to the rotary electric machine. In the case where the rotary electric machine is controlled by deciding current commands Id*, Iq* in the d-q-axis vector coordinate system, the rotary electric machine control device controls the rotary electric machine such that the magnitude of an armature current Ia becomes equal to or more than a lower-limit current Ia_min prescribed in advance.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: June 12, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Arinori Shimada, Masashi Miyazaki, Subrata Saha, Keisuke Nishimura, Ken Iwatsuki
  • Patent number: 9853591
    Abstract: An inverter control device for controlling a rotating electric machine drive device that includes an inverter and a DC link capacitor, the inverter being connected to a DC power supply via a contactor, being connected to an alternating current rotating electric machine, and performing power conversion between direct current and three-phase alternating current, an arm for each alternating current phase being formed by a series circuit including an upper side switching element and a lower side switching element, and the DC link capacitor smoothing a DC link voltage, which is a DC-side voltage of the inverter, the inverter control device performing switching control on the switching elements that form the inverter.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: December 26, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Subrata Saha, Arinori Shimada
  • Patent number: 9806644
    Abstract: A control device that controls an inverter interposed between a DC power source and an AC rotary electric machine to perform power conversion between DC power and AC power, wherein the inverter includes a plurality of sets of an upper switching element and a lower switching element connected in series with each other between positive and negative electrodes on the DC side and controlled so as to be turned on and off in a complementary manner; and the control device executes short-circuiting processing, in which all the upper switching elements or all the lower switching elements are controlled so as to be turned on, while the AC rotary electric machine is stationary.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: October 31, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Arinori Shimada, Mitsuru Takahashi
  • Publication number: 20170110999
    Abstract: The magnetic pole position of a rotary electric machine is electrically derived accurately by reducing a voltage error due to a dead time while suppressing the influence on the operation efficiency of the rotary electric machine. A control device performs dead-time compensation, and performs current feedback control in a d-q-axis vector coordinate system using a magnetic pole position computed on the basis of an induced voltage produced by rotation of a rotor or on the basis of a response component to a high-frequency observation signal applied to the rotary electric machine. In the case where the rotary electric machine is controlled by deciding current commands Id*, Iq* in the d-q-axis vector coordinate system, the rotary electric machine control device controls the rotary electric machine such that the magnitude of an armature current Ia becomes equal to or more than a lower-limit current Ia_min prescribed in advance.
    Type: Application
    Filed: March 30, 2015
    Publication date: April 20, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Arinori SHIMADA, Masashi MIYAZAKI, Subrata SAHA, Keisuke NISHIMURA, Ken IWATSUKI
  • Publication number: 20170093323
    Abstract: An inverter control device for controlling a rotating electric machine drive device that includes an inverter and a DC link capacitor, the inverter being connected to a DC power supply via a contactor, being connected to an alternating current rotating electric machine, and performing power conversion between direct current and three-phase alternating current, an arm for each alternating current phase being formed by a series circuit including an upper side switching element and a lower side switching element, and the DC link capacitor smoothing a DC link voltage, which is a DC-side voltage of the inverter, the inverter control device performing switching control on the switching elements that form the inverter.
    Type: Application
    Filed: March 26, 2015
    Publication date: March 30, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA
  • Publication number: 20170093324
    Abstract: An inverter control device for controlling a rotating electric machine drive device that drives an alternating current rotating electric machine and includes an inverter and a DC link capacitor, the inverter being connected to a DC power supply via a contactor, being connected to the rotating electric machine, and performing power conversion between direct current and three-phase alternating current, the DC link capacitor smoothing a DC link voltage, which is a DC-side voltage of the inverter, and the inverter control device performing switching control on switching elements that form the inverter.
    Type: Application
    Filed: March 18, 2015
    Publication date: March 30, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA
  • Patent number: 9543885
    Abstract: A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device including: an inverter that is electrically interposed between a direct-current power supply and the rotary electric machine, and converts electric power between a direct current and an alternating current; a smoothing capacitor that is electrically interposed between the direct-current power supply and the inverter, and is connected between a positive pole and a negative pole on a direct-current side of the inverter; and an inverter control unit that controls switching of a switching element of the inverter according to a predefined switching frequency.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: January 10, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Subrata Saha, Arinori Shimada
  • Patent number: 9438153
    Abstract: A rotary electric machine control device that controls a rotary electric machine that includes a rotor in which a permanent magnet is disposed so as to provide magnetic saliency, and that performs feedback control on the rotary electric machine on the basis of a deviation between a current command and a feedback current from the rotary electric machine in a d-q-axis vector coordinate system defined by a d-axis which extends in a direction of a magnetic field produced by the permanent magnet and a q-axis which is orthogonal to the d-axis.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: September 6, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Arinori Shimada, Tatsuya Okubo, Subrata Saha
  • Publication number: 20160204720
    Abstract: A control device that controls an inverter interposed between a DC power source and an AC rotary electric machine to perform power conversion between DC power and AC power, wherein the inverter includes a plurality of sets of an upper switching element and a lower switching element connected in series with each other between positive and negative electrodes on the DC side and controlled so as to be turned on and off in a complementary manner; and the control device executes short-circuiting processing, in which all the upper switching elements or all the lower switching elements are controlled so as to be turned on, while the AC rotary electric machine is stationary.
    Type: Application
    Filed: September 18, 2014
    Publication date: July 14, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Arinori SHIMADA, Mitsuru TAKAHASHI
  • Publication number: 20150365040
    Abstract: A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device including: an inverter that is electrically interposed between a direct-current power supply and the rotary electric machine, and converts electric power between a direct current and an alternating current; a smoothing capacitor that is electrically interposed between the direct-current power supply and the inverter, and is connected between a positive pole and a negative pole on a direct-current side of the inverter; and an inverter control unit that controls switching of a switching element of the inverter according to a predefined switching frequency.
    Type: Application
    Filed: March 28, 2014
    Publication date: December 17, 2015
    Applicant: AISIN AW CO., LTD.
    Inventors: Subrata SAHA, Arinori SHIMADA
  • Publication number: 20150357956
    Abstract: A rotary electric machine control device that controls a rotary electric machine that includes a rotor in which a permanent magnet is disposed so as to provide magnetic saliency, and that performs feedback control on the rotary electric machine on the basis of a deviation between a current command and a feedback current from the rotary electric machine in a d-q-axis vector coordinate system defined by a d-axis which extends in a direction of a magnetic field produced by the permanent magnet and a q-axis which is orthogonal to the d-axis.
    Type: Application
    Filed: March 28, 2014
    Publication date: December 10, 2015
    Inventors: Arinori SHIMADA, Tatsuya OKUBO, Subrata SAHA
  • Patent number: 9106174
    Abstract: An inverter control section controls the inverter by controlling an armature current in a two-axis orthogonal coordinate system that rotates in synchronization with the rotary electric machine, the armature current being a vector obtained by synthesizing a field current and a drive current extending along respective axes of the orthogonal coordinate system. If it is determined that connection between the DC power source section and the inverter is in a blocked state, the inverter control section executes zero-torque control in which the inverter is controlled such that torque regenerated by the rotary electric machine becomes zero, and executes high-loss control in which the field current is varied so as to increase the armature current while maintaining a torque command provided in the zero-torque control.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 11, 2015
    Assignee: AISIN AW CO., LTD.
    Inventors: Takaomi Sekiya, Subrata Saha, Mitsuru Nakamura, Arinori Shimada
  • Patent number: 9059653
    Abstract: A rotating electrical machine control device that applies a high frequency current to a rotating electrical machine including a rotor having saliency, estimates a magnetic pole direction of the rotor on the basis of a high frequency component contained in a voltage command as a response component to the high frequency current, and controls the rotating electrical machine. A high frequency superimposing section sets an estimated d-q axis rotating coordinate system, and a magnetic pole direction adjusting section sets a high frequency coordinate system having a phase difference of the high frequency current command with respect to the estimated d-q axis rotating coordinate system. A steady estimation error correcting section calculates a magnetic flux interference estimation error as an error of the estimated value of the magnetic pole direction which is caused by the d-q axis magnetic flux interference.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: June 16, 2015
    Assignee: AISIN AW CO., LTD.
    Inventors: Arinori Shimada, Subrata Saha
  • Patent number: 9018870
    Abstract: A control device for a rotating electrical machine, which is able to reduce a tracking delay of an actual output torque and actual currents with respect to a fluctuating torque command and fluctuating current commands and to reduce steady state deviations, is obtained. The control device includes a torque current computing unit; an actual current computing unit; a current feedback control unit; and a voltage control unit that controls voltages on the basis of the two-phase voltage commands. The torque command includes a fluctuation cancellation torque command for cancelling transmission torque fluctuations transmitted from the internal combustion engine, and the current feedback control unit includes a harmonic controller that calculates the two-phase voltage commands by using a characteristic of a transfer function corresponding to a periodic function of a frequency of the transmission torque fluctuations.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 28, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Hirokazu Kobayashi, Arinori Shimada, Takeshi Aoki, Subrata Saha, Ken Iwatsuki