Patents Assigned to Mitsubishi Electric Corporation
  • Publication number: 20220200475
    Abstract: A control device includes: a phase error calculation unit to calculate a phase error between a phase of a voltage command for the power converter and a phase of a point-of-interconnection voltage; and an isolated system determination unit to determine whether the AC power system has shifted from an interconnected system to an isolated system, based on the phase error and a magnitude of the point-of-interconnection voltage, the interconnected system being the AC power system connected to a generator, the isolated system being the AC power system not connected to the generator. The isolated system determination unit determines that the AC power system has shifted from the interconnected system to the isolated system, when at least a first condition is met that the phase error is outside a reference range and the magnitude of the point-of-interconnection voltage is greater than a first voltage threshold.
    Type: Application
    Filed: April 25, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryosuke UDA, Takeshi KIKUCHI, Shuhei FUJIWARA, Yoshiyuki KONO
  • Publication number: 20220199811
    Abstract: Provided is a technology that suppresses the removal of collector layers in the planarization process while suppressing the snapback phenomenon. A semiconductor device related to a technology disclosed in the present specification includes a drain layer of first conductivity type in a part of a lower surface a drift layer, a plurality of collector layers of second conductivity type in parts of the lower surface of the drift layer, and a dummy layer of the first conductivity type interposed between the plurality of collector layers in parts of the lower surface of the drift layer, in which a width of the dummy layer 3 in a first direction, which is the direction in which the dummy layer is interposed between the plurality of collector layers, is narrower than a width of the drain layer in the first direction.
    Type: Application
    Filed: May 29, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazuya KONISHI, Yoichiro TARUI, Hiroki NIWA, Hiroaki OKABE, Hiroshi WATANABE
  • Publication number: 20220200491
    Abstract: A rotary electric machine control device includes: a plurality of mutually-independent motor system lines, each having a motor with a servomechanism and a drive controller for driving and controlling the motor (3); and a cooperative controller which, when occurrence of a failure of the drive controller is detected in one motor system line in the plurality of the motor system lines, establishes a connection path for causing the motor of the one motor system line where the occurrence of the failure has been detected, to be driven using at least one part of the drive controller in another motor system line in that motor system lines.
    Type: Application
    Filed: August 20, 2019
    Publication date: June 23, 2022
    Applicant: MItsubishi Electric Corporation
    Inventor: Chiharu MORISAKI
  • Publication number: 20220200498
    Abstract: A motor drive device: a power conversion unit; a current detection unit that detects a phase current of the alternating-current motor; a position/speed specifying unit that specifies a magnetic pole position and a rotational speed of the alternating-current motor; a d-axis current pulsation generating unit that generates a d-axis current pulsation command based on q-axis current pulsation or a q-axis current pulsation command, which being in synchronization with the q-axis current pulsation or the q-axis current pulsation command and preventing or reducing an increase or decrease in amplitude of the voltage command; and a dq-axis current control unit that generates the voltage command for controlling the phase current on the dq rotating coordinates, which rotate in synchronization with the magnetic pole position, by using the magnetic pole position, the rotational speed, the phase current, the q-axis current pulsation or the q-axis current pulsation command, and the d-axis current pulsation command.
    Type: Application
    Filed: May 20, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenji TAKAHASHI, Shinya TOYODOME, Mitsuo KASHIMA, Tomohiro KUTSUKI
  • Publication number: 20220200313
    Abstract: A charge and discharge control device includes a storage charge level determining unit that selects one range from a first charge level range lower than a second charge level range and a third charge level range higher than the second charge level range, and determines a charge level at storage during which charge and discharge of a battery are not performed, the second charge level range being a range of charge level including a maximum value of storage degradation, the storage degradation being degradation of the battery over time; and a charge and discharge control unit that controls charge and discharge of the battery on the basis of the charge level at storage.
    Type: Application
    Filed: June 12, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keisuke OGASAWARA, Tomoki TAKEGAMI
  • Publication number: 20220200506
    Abstract: A direct-current bus power supply as a power supply device supplies power to a load capable of switching a state between a driving state in which driving is performed by receiving power supply and a standby state in which driving is stopped while receiving power supply. The power supply device includes: a diode bridge circuit and capacitors as a rectifier circuit that enables an alternating-current voltage to be rectified by respective rectification systems of full-wave rectification and voltage doubler rectification; and a switching unit that perform switching between the full-wave rectification and the voltage doubler rectification on the basis of a voltage value of the alternating-current voltage and the state of the load.
    Type: Application
    Filed: May 17, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki FUKUDA, Tatsuya FUJIMURA
  • Publication number: 20220200374
    Abstract: A rotating electric machine includes a stator and a rotor. The rotor includes a rotor core, an axial end part, and a rotor magnet inserted into an insertion hole formed so as to pass through the rotor core. The axial end part has a recessed portion. The rotor magnet includes a first side surface and a second side surface. The first side surface is fixed to a first inner wall surface of the insertion hole. In a cross section perpendicular to the axial direction, a width of the first inner wall surface is larger than a width of the first side surface. The second side surface is fixed to a second inner wall surface of the recessed portion. In the cross section perpendicular to the axial direction, a width of the second inner wall surface is larger than a width of the second side surface.
    Type: Application
    Filed: April 10, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki HIDAKA, Hideaki ARITA, Taiga KOMATSU, Shohei FUJIKURA
  • Publication number: 20220194317
    Abstract: An on-board device in a control system in which frequencies used for transmitting and receiving a signal between the on-board device and an electronic key are known, and the electronic key transmits a response signal to a desired signal within a specified period when completing reception of the desired signal from the on-board device, the on-board device transmits the desired signal on a first frequency included in a specified frequency band; transmits a dummy signal on a second frequency included in the specified frequency band and different from the first frequency; receives the response signal to the desired signal from the electronic key; and controls to transmit the dummy signal in a period from before stopping transmitting the desired signal to after starting reception of the response signal.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Akinori TAIRA
  • Publication number: 20220199821
    Abstract: The present invention relates to a heterojunction field effect transistor, and the heterojunction field effect transistor includes a barrier layer provided in an upper layer portion of a channel layer of a first nitride semiconductor, being formed of a second nitride semiconductor hetero-joined to the first nitride semiconductor, first and second impurity regions provided, being spaced each other with the barrier layer interposed therebetween, a source electrode and a drain electrode which are provided on the first and second impurity regions, respectively, an insulating film which is so provided as to come into contact with at least a region of the barrier layer excluding an edge portion thereof on the side of the source electrode, a gate insulating film which is in contact with the edge portion of the barrier layer and covers the insulating film, and a gate electrode which is so provided on the gate insulating film.
    Type: Application
    Filed: November 11, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuma NANJO, Akifumi IMAI, Tatsuro WATAHIKI
  • Publication number: 20220197107
    Abstract: A reflective optical device has an insulation layer, a lattice group, a rear surface electrode, and a voltage application unit. Lattice group is composed of a plurality of lattices including a lattice and a lattice. Each of the plurality of lattices has a structure in which dielectric layer and graphene layer are laminated. Voltage application unit has a function of individually applying a voltage to each of lattice group. Voltage application unit includes a voltage application unit to apply a first voltage to lattice, and a voltage application unit to apply a second voltage to lattice.
    Type: Application
    Filed: June 20, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shimpei OGAWA, Masaaki SHIMATANI, Shoichiro FUKUSHIMA
  • Publication number: 20220200161
    Abstract: A phased array antenna device for receiving a signal from a satellite includes subarrays including antenna elements and phase shifters that shift phases of signals received by the antenna elements with set phase shift values, a demodulator that demodulates the signals from the satellite with the phases shifted by the phase shifters and outputs the demodulated signals, and a controller that sets the phase shift values of the phase shifters and controls a beam direction. The controller calculates, for each of the subarrays, a direction-correction phase shift value that maximizes a power value of the signal from the satellite by being added to the phase shift values of the phase shifters included in the subarray and adds the direction-correction phase shift value to the phase shift values of the phase shifters included in the subarray.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Tomohiro TAKAHASHI
  • Publication number: 20220194745
    Abstract: There is provided a method of renewing a passenger conveyor that is capable of preventing the passenger conveyor from being unavailable for a long time period when the passenger conveyor is renewed in a stepped manner. The method of renewing a passenger conveyor includes a safety device update process of updating an existing safety device to a new safety device in the passenger conveyor, and a drive machine and control panel update process of, after the safety device update process, updating an existing drive machine of the passenger conveyor to a new drive machine and updating an existing control panel of the passenger conveyor to a new control panel.
    Type: Application
    Filed: August 6, 2019
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yukiyasu NAGAO
  • Publication number: 20220194430
    Abstract: An information processing device with improved prediction accuracy of the moving routes of obstacles is obtained. The information processing device according to the present disclosure includes an object position information acquisition unit to acquire obstacle position information showing a position of at least one obstacle existing around a vehicle, an obstacle potential map generation unit to generate an obstacle potential map of risk of a traffic accident for the at least one obstacle based on the obstacle position information, and an obstacle moving route prediction unit to predict a moving route of the at least one obstacle based on the obstacle potential map and generate obstacle moving route prediction information.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Yasushi SUGAMA
  • Publication number: 20220196904
    Abstract: A lighting device includes a first light source to emit first light; a diffuser to receive the first light and emits first scattered light; and a frame to support the first light source and the diffuser. The the diffuser includes nanoparticles, and guides the received first light, scatters it with the nanoparticles, and emits it as the first scattered light. The diffuser includes an incident surface to receive the first light, a first surface on which an emission surface to emit the first scattered light is formed, and a second surface opposite the first surface. The incident surface is at a first edge portion of the diffuser, the frame is opened to expose at least a portion of a region on the first surface of the diffuser in which the emission surface is formed and a region on the second surface corresponding thereto.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yusuke FUJII, Satoru OKAGAKI
  • Publication number: 20220195622
    Abstract: A silicon carbide single crystal has a positive correlation between a temperature and an electric resistivity in a range from room temperature to 400° C., has an electric resistivity of at least 1×107 ?·cm in the range from room temperature to 400° C., exhibits electric conduction by holes while no significant electric conduction properties by electrons are observed regarding electric conduction at room temperature, and has a concentration of a transition element of 1×1017/cm3 or less.
    Type: Application
    Filed: June 18, 2020
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Hiroyuki KINOSHITA
  • Publication number: 20220198679
    Abstract: A data extraction unit (23) extracts, out of image data obtained by photographing a photographing region with a photographing device (41), image data of a region including a detection target region, as target data, and extracts, out of the target data, image data of an enlarging region, as partial data. A size modification unit (24) size-modifies each of the target data and the partial data to a request size requested by an object detection model being a model that detects an object from image data. An object detection unit (25) inputs each of the size-modified target data and the size-modified partial data to the object detection model, and detects a target object from each of the target data and the partial data.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 23, 2022
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shoto ISANO, Takamasa NAKAO, Hirokazu ABE, Yuuki TOKUDA, Mitsuyoshi YAMATARI
  • Publication number: 20220198113
    Abstract: A design support device includes an operation reception unit that receives an operation from a user, a program creation unit that creates a ladder program in accordance with the operation received by the operation reception unit, and a circuit block extraction unit that extracts a circuit block from the ladder program when the circuit block is formed and a predetermined condition is satisfied. The circuit block is formed by detecting that one end of a circuit including a plurality of program elements is connected to one of two power rails included in the ladder program and that another end of the circuit is connected to another one of the two power rails. Further, there is a circuit block memory that stores configuration information of the circuit block extracted by the circuit block extraction unit. There is also a notification unit.
    Type: Application
    Filed: January 9, 2020
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenta TOMONAGA, Tomo HORIKAWA
  • Publication number: 20220198094
    Abstract: A network construction support system (100) generates one or more pieces of layout data (101) indicating a layout of construction assisting tools (140). The network construction support system calculates a countermeasure cost and an estimated risk amount, for each layout data, the countermeasure cost increasing as a number of units of construction assisting tools increases, the estimated risk amount decreasing as the number of units of construction assisting tools increases and as a narrowed range by each construction assisting tool narrows. The network construction support system judges an appropriateness of the layout data for the apparatus network system, for each layout data, on the basis of a countermeasure cost, an estimated risk amount, and an allowable risk amount which is allowed for the apparatus network system, The network construction support system outputs layout data judged to be appropriate for the apparatus network system.
    Type: Application
    Filed: March 15, 2022
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Kiyohito MIYAZAKI
  • Publication number: 20220199317
    Abstract: The power conversion device includes: a boost, converter which includes a magnetically-coupled reactor and plurality of semiconductor switching elements connected to the magnetically-coupled reactor; an inverter; a cooler for cooling the magnetically-coupled reactor; a bus bar which is a conductive wiring member; and a current sensor for detecting a magnetic flux generated around the bus bar. The magnetically-coupled reactor includes a first winding, a second winding, and a core for magnetically coupling the first winding and the second winding. The core has a composite magnetic body containing soft magnetic powder and binder, and at least parts of the first winding and the second winding are embedded in the composite magnetic body. The cooler is provided in contact with the magnetically-coupled reactor. The current sensor is provided on a side opposite to the magnetically-coupled reactor with the cooler therebetween.
    Type: Application
    Filed: July 28, 2021
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mao KAWAMURA, Hayato TANABE, Takuya NAKAMURA
  • Publication number: 20220200236
    Abstract: A laser beam generation device includes power supply units, LD modules, a combiner, and a control device. The LD modules receive currents from the power supply units, and output laser beams. The combiner collects the laser beams and outputs one laser beam. The control device generates control signals such that power of the laser beam becomes a laser output setting value and such that the currents become current command values. Phases of pulses of the control signals are shifted from each other by 60 degrees.
    Type: Application
    Filed: May 25, 2020
    Publication date: June 23, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimichi SAITO, Shuji WAKAIKI, Hiroshi IKARASHI, Shingo TSUDA, Hideyasu MACHII, Masato MATSUBARA