Patents Assigned to Toshiba Infrastructure Systems & Solutions Corporation
  • Patent number: 10742151
    Abstract: A device according to an embodiment includes an circuit; a detector for detecting a current response output from the circuit; a vector converter for converting the current response into a d-axis current and a q-axis current by using a rotational phase angle of a motor connected to the circuit; a calculator for calculating, based on a torque command and a current phase angle command, a current amplitude command of the current response output from the circuit; a dq-axes converter for calculating a d-axis current command and a q-axis current command from the current amplitude command and the current phase angle command; and a controller for calculating a voltage command so that the d-axis current command and the q-axis current command are equal to the d-axis current and the q-axis current.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 11, 2020
    Assignees: Toshiba Infrastructure Systems & Solutions Corporation, Toshiba Industrial Products and Systems Corporation
    Inventors: Shun Taniguchi, Kazuya Yasui, Tomoaki Shigeta
  • Publication number: 20200238835
    Abstract: A controller of an embodiment includes a limiter receiving an active current command initial value, limiting a maximum value of the active current command initial value with a predetermined value, and outputting a first value; a circuit to calculate a reactive current command initial value; a calculator to calculate a reactive current command adjustment value; a unit receiving the first value as an input, and calculating a reactive current upper limit value such that a composite value of the first value and the reactive current upper limit value is equal to or smaller than an input current maximum value; and a limiter to output the reactive current command adjustment value or the reactive current upper limit value, whichever is smaller. The predetermined value is a value to set the reactive current upper limit value to a value larger than zero and smaller than the input current maximum value.
    Type: Application
    Filed: January 27, 2020
    Publication date: July 30, 2020
    Applicants: Central Japan Railway Company, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Ken KUNOMURA, Toshimasa SHIMIZU, Kenji SATO, Hirokazu KATO, Kazuaki YUUKI, Toshiyuki UCHIDA, Masatsugu MORITA, Hiroki MIYAJIMA, Yukitaka MONDEN
  • Patent number: 10666130
    Abstract: According to one embodiment, an electric power conversion system includes a convertor, a detector, a delay controller, and a determinator. The detector is configured to detect information related to a voltage of electric power converted by the converter. The delay controller is configured to delay a conversion operation start of the converter by a first predetermined time with respect to a supply start time at which supply of the electric power is started. The determinator is configured to perform a first determination on the basis of a detection result detected by the detector before elapse of the first predetermined time from the supply start tune, and to perform a second determination on the basis of a detection result detected by the detector after the elapse of the first predetermined time from the supply start time.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: May 26, 2020
    Assignees: CENTRAL JAPAN RAILWAY COMPANY, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kenji Sato, Hirokazu Kato, Takafumi Fukushima, Hiroaki Otani, Tomoyuki Makino, Toshiyuki Uchida, Manato Mori
  • Patent number: 10611245
    Abstract: A power conversion system includes a transformer, a power conversion device for travel, a power conversion device for auxiliary power sources, an electrical storage device, and an auxiliary device. The power conversion device for travel converts AC power into power for travel and supplies it to a travel motor. The power conversion device for auxiliary power sources includes an AC to DC conversion unit which converts AC power into DC power, a power conversion unit for AC loads which converts the DC power into AC power and supplies it to an AC load, and a power conversion unit for DC loads which converts DC power to DC power and supplies it to a DC load. The electrical storage device is connected to power lines connecting DC power output terminals of the AC to DC conversion unit and DC power input terminals of both the power conversion units for AC and DC loads.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: April 7, 2020
    Assignees: CENTRAL JAPAN RAILWAY COMPANY, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takafumi Fukushima, Noriyuki Taniyama, Shigekazu Okada, Kotaro Oda, Hiroaki Otani, Yasuomi Maki, Kenichi Kikkawa, Tsunehito Fujita, Manato Mori
  • Patent number: 10538162
    Abstract: A power conversion system includes an AC to DC conversion circuit, a voltage detector, a step-down chopper circuit, a power conversion device for auxiliary power sources, and a control unit. The AC to DC conversion circuit converts AC power supplied from overhead wires via a transformer into DC power. The voltage detector detects a voltage of AC power supplied from the transformer. The step-down chopper circuit steps down the voltage of DC power produced through conversion by the AC to DC conversion circuit. The power conversion device for auxiliary power sources converts the DC power stepped down by the step-down chopper circuit into power for driving loads mounted in an electric vehicle and supplies it to the loads. The control unit controls the AC to DC conversion circuit and the step-down chopper circuit such that the voltage of AC power detected by the voltage detector approaches a reference voltage.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 21, 2020
    Assignees: CENTRAL JAPAN RAILWAY COMPANY, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Takafumi Fukushima, Shigekazu Okada, Kotaro Oda, Yasuomi Maki, Tsunehito Fujita, Hiroaki Otani, Kenichi Kikkawa, Manato Mori
  • Patent number: 10525838
    Abstract: A power conversion system includes a transformer, a power conversion device for travel, a power conversion device for auxiliary power sources, and an electrical storage device. The power conversion device for auxiliary power sources includes a first AC to DC conversion unit, a power conversion unit for AC loads, and a power conversion unit for DC loads. The power conversion unit for AC loads converts DC power into AC power and supplies it to an AC load. The power conversion unit for DC loads converts DC power produced through conversion by the first AC to DC conversion unit into DC power and supplies it to a DC load. The electrical storage device is connected to power lines connecting DC power output terminals of the first AC to DC conversion unit and DC power input terminals of both the power conversion units for AC and DC loads.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 7, 2020
    Assignees: CENTRAL JAPAN RAILWAY COMPANY, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kenji Sato, Masayuki Ueno, Takafumi Fukushima, Shigekazu Okada, Kotaro Oda, Hiroaki Otani, Yasuomi Maki, Kenichi Kikkawa, Tsunehito Fujita, Manato Mori
  • Patent number: 10484097
    Abstract: According to one embodiment, a communication repeater system includes a master station device, slave station devices, radio frequency units that convert signals from base station systems into optical digital signals for transmission to the master station device. The base station systems establish communication by time-division duplex scheme. The communication repeater system repeats communication between a mobile communication terminal device and each base station system via a corresponding slave station device. At least one of the radio frequency units and the master and slave station devices includes a learning-signal input port, and a setter that generates a reference transmission/reception switching timing signal based on a learning signal input to the learning-signal input port and sets the generated signal as reference transmission/reception switching timing.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 19, 2019
    Assignees: Kabushiki Kaisha Tashiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Kensei Kawabata
  • Publication number: 20190288588
    Abstract: A cage induction motor includes a rotor core that is rotatable about a central axis, and a shaft to which the rotor core is fixed. The rotor core includes an annular yoke and a plurality of spokes. The yoke supports at least one conductor. The plurality of spokes are arranged apart from one another in a circumferential direction of the yoke, are provided between the yoke and the shaft, and support the yoke.
    Type: Application
    Filed: May 19, 2017
    Publication date: September 19, 2019
    Applicants: CENTRAL JAPAN RAILWAY COMPANY, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kenji SATO, Takafumi FUKUSHIMA, Daisuke MISU, Makoto MATSUSHITA, Toshio HASEBE
  • Patent number: 10389984
    Abstract: To provide a crack analysis device, a crack analysis method, and a crack analysis program capable of correctly evaluating deterioration in a road surface. A crack analysis device includes an image acquisition unit, a crack detector, and a display. The image acquisition unit acquires an image of a road surface. The crack detector detects cracks in which a closed region is formed on the photographed road surface based on the photographed image. The display displays a detection result of the detected cracks; and the crack detector detects the cracks which intersect each other on the road surface to form the closed region.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: August 20, 2019
    Assignee: Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yoko Yonekawa, Nobuyuki Kumakura, Takahiko Yamazaki, Tomotaka Ueta
  • Patent number: 10284094
    Abstract: A circuit configured to, for each of values of output currents output from power conversion devices connected in parallel to one another and driven based on common ON signals applied to the power conversion devices, output a difference between the output current value and a reference value when a polarity of the output current value is positive, and output a difference between an absolute value of the output current value and an absolute value of the reference value when the polarity of the output current value is negative; and a circuit configured to output adjustment time signals each of which indicates an amount of a delay time of a rising timing or a falling timing of the ON signal, according to an output value of the output current difference calculation circuit.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: May 7, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Suzuo Saito, Akihisa Matsushita, Yoichi Morishima
  • Publication number: 20190130597
    Abstract: Generally, an information processing device according to one embodiment includes storage, a receiver, a detector, an extractor, and a position specifier. The storage stores therein, imaging positional information indicating, identification information on a landmark set, and registration landmark information, in association with one another. The receiver receives a captured image for position specification from an onboard device. The extractor extracts imaging landmark information serving as information on a detected landmark from the captured image for position specification. The position specifier specifies the position indicated by the imaging positional information associated with the identification information on the landmark set including the registration landmark information similar to the imaging landmark information as the position of a vehicle at time when the captured image for position specification is taken.
    Type: Application
    Filed: October 18, 2018
    Publication date: May 2, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yoshihiko SUZUKI, Toshio Sato, Yusuke Takahashi, Hiroshi Sakai, Hideki Ueno
  • Publication number: 20190109527
    Abstract: According to one embodiment a synchronous reluctance rotating electrical machine of an embodiment has a shaft and a rotor core. The rotor core is fixed to the shaft, in which cavity portions being formed in a projected shape toward a radially inward direction are formed into multilayers for each pole and bridges are respectively formed between the cavity portions and an outer circumferential surface. The thickness of an outermost bridge positioned outermost on the pole end side among the plurality of bridges is formed to be gradually thicker from the pole center side toward the pole end side. Among the plurality of bridges, the thickness of an intermediate bridge positioned on the pole center side of the outermost bridge with one bridge interposed therebetween is formed to be gradually thicker from the pole end side toward the pole center side.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Norio Takahashi, Katsutoku Takeuchi, Makoto Matsushita, Daisuke Misu, Toshio Hasebe
  • Publication number: 20190095771
    Abstract: According to an embodiment, the IC card includes a communication unit, a verification rate acquisition unit, a setting unit, a reception processing unit, and a determination unit. The communication unit transmits and receives data to and from an external device. The verification rate acquisition unit acquires a verification rate of biometric information. The setting unit selects a security level corresponding to the verification rate from a plurality of security levels each indicating an executable command, and sets the selected security level as the current security level. The reception processing unit receives a command through the communication unit. The determination unit determines whether or not the received command is executable on the basis of the current security level.
    Type: Application
    Filed: November 26, 2018
    Publication date: March 28, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Tomotaka Okuno
  • Publication number: 20190097202
    Abstract: According to an embodiment, a battery module includes, for example, a plurality of battery cells, a first chassis, and a connection member. The battery cells are aligned in a first direction. The first chassis includes a plurality of first compartments in which the battery cells are housed one by one, and at least one second compartment that is partitioned in the first direction. The connection member includes a body that is housed in the second compartment; a pair of connection terminals that is mounted on a first face of the body and is electrically connectable to the electrodes of the battery cells via a conductive member, the first face facing in a second direction intersecting with the first direction; and a conductor that extends across the pair of connection terminals.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Masahito Morone, Hirofumi Yamamoto, Tatsumi Matsuo, Motohiro Itou, Shinya Sato, Kazuto Kuroda, Ryo Okabe, Norihiro Kaneko, Minoru Gyoda, Yuji Sasaki, Kota Asami, Nobuyasu Negishi
  • Publication number: 20190097033
    Abstract: A high power device including with a first nitride semiconductor layer, a second nitride semiconductor layer formed on the first nitride semiconductor layer, and a third nitride semiconductor layer containing an Al element formed on the second nitride semiconductor layer. The second nitride semiconductor layer is a multiple quantum well layer in which a nitride semiconductor layer containing an In element and a nitride semiconductor layer not containing an In element are alternately stacked.
    Type: Application
    Filed: June 29, 2018
    Publication date: March 28, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Kenichi Sugita
  • Publication number: 20190087937
    Abstract: According to one embodiment, a monitoring system includes a monitoring terminal and a server. The monitoring terminal includes a detector, a tracking unit, a first selector, and a transmitter. The server includes a receiver, a second selector, a collation unit, and an output unit. The receiver receives a first best shot images from the monitoring terminal. The second selector performs second selection processing, as part of a predetermined selection processing other than a first selection processing, of selecting a second best shot image suitable for collation with a predetermined image from among the first best shot images. The collation unit performs collation processing of collating the second best shot image with the predetermined image. The output unit outputs a result of the collation processing.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 21, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Hiroo SAITO
  • Publication number: 20190089147
    Abstract: A storage battery device includes a battery unit, a first circuit breaker, a second circuit breaker, and a control unit. The first circuit breaker switches between connecting and disconnecting a first-electrode side of the battery unit and an external device. The second circuit breaker switches between connecting and disconnecting a second-electrode side of the battery unit and the external device. The control unit supplies power to the first circuit breaker and the second circuit breaker in sequence with the power supplied to the second circuit breaker offset relative to the power supplied to the first circuit breaker by a time period equal to or longer than a time difference required for a sum of currents flowing through the first circuit breaker and the second circuit breaker to reach an upper bound current that is set as an upper bound of a current.
    Type: Application
    Filed: March 9, 2016
    Publication date: March 21, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Ryo OKABE, Norihiro KANEKO, Yusuke KIKUCHI, Takayuki ONODA, Kazuto KURODA, Masahiro SEKINO, Jun TAKAHASHI
  • Publication number: 20190081366
    Abstract: A battery control device of embodiments includes at least two transistors and a control unit. The at least two transistors are at least two transistors that are connected to a battery in series and control charging of the battery, include body diodes, respectively, and are connected in series such that respective body diodes are arranged in the same direction. The control unit changes a conduction pattern in which a conduction state and a non-conduction state of the at least two transistors are switched, and determines whether at least one of the at least two transistors has an abnormality on the basis of a change in a measured voltage.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 14, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Minoru Gyoda, Masanori Terasaki, Makoto Matsuoka
  • Publication number: 20190081292
    Abstract: A battery pack includes a casing, a plurality of battery cells, and a first connector, for example. The casing includes a first outer wall and a protrusion that is provided on the first outer wall and protrudes outward from the first outer wall. The battery cells include an electrode terminal and are housed in the casing. The first connector is provided on the protrusion and is electrically connected to the electrode terminal.
    Type: Application
    Filed: March 16, 2016
    Publication date: March 14, 2019
    Applicants: Kabushi Kaisha Toshiba, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Norio SHIMIZU, Toshinori UCHIDA, Kazuto KURODA, Masahiro SEKINO
  • Publication number: 20190081552
    Abstract: According to one embodiment, an electric power conversion system includes a convertor, a detector, a delay controller, and a deteminator. The detector is configured to detect information related to a voltage of electric power converted by the converter. The delay controller is configured to delay a conversion operation start of the converter by a first predetermined time with respect to a supply start time at which supply of the electric power is started. The determinator is configured to perform a first determination on the basis of a detection result detected by the detector before elapse of the first predetermined time from the supply start tune, and to perform a second determination on the basis of a detection result detected by the detector after the elapse of the first predetermined time from the supply start time.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Applicants: CENTRAL JAPAN RAILWAY COMPANY, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kenji SATO, Hirokazu KATO, Takafumi FUKUSHIMA, Hiroaki OTANI, Tomoyuki MAKINO, Toshiyuki UCHIDA, Manato MORI