Tokyo, Japan

The Central Japan Railway Company is the main railway company operating in the Chūbu region of central Japan. It is officially abbreviated in English as JR Central and in Japanese as JR Tōkai . Its headquarters are located in the JR Central Towers in Nakamura-ku, Nagoya, Aichi Prefecture.The company's operational hub is Nagoya Station. The busiest railway line it operates is the Tōkaidō Main Line between Atami Station and Maibara Station. JR Central also operates the Tōkaidō Shinkansen between Tokyo Station and Shin-Ōsaka Station. Additionally it is responsible for the Chūō Shinkansen—a proposed Maglev service between Tokyo Station and Ōsaka Station , of which a short demonstration section has been built. Currently, the company is conducting demonstrations of its shinkansen to railway officials from different countries in the effort to market bullet train technology overseas.JR Central is Japan's most profitable and highest throughput high-speed-rail operator, carrying 138 million high-speed-rail passengers in 2009, considerably more than the world's largest airline. Japan recorded a total of 289 million high-speed-rail passengers in 2009. Wikipedia.

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Patent
Central Japan Railway Company | Date: 2015-07-01

The present invention of one aspect relates to a railway vehicle having a plurality of electrical circuits. The railway vehicle comprises: an external power supply connection portion; a contactor of a normally closed type that opens and closes a common line connecting the plurality of electrical circuits to a ground, the contractor opening the common line by receiving supply of electric power through the external power supply connection portion and closing the common line when no current is applied; and an operation prohibition determining unit that determines whether supply of electric power to the plurality of electrical circuits is stopped and that prohibits the contactor from opening the common line when the supply of electric power is not stopped.


Patent
Central Japan Railway Company, Nippon Sharyo Ltd. and Nabtesco Corporation | Date: 2015-08-26

Provided are a railroad vehicle that makes it possible to maintain the air tightness of a door and a plug door for a railroad vehicle. A second rail (9) is provided parallel to a first rail (2) in the longitudinal direction of a vehicle body above the leading edge side (door (8) side) of a plug rail (5). The second rail (9) supports the leading edge side of the plug rail (5). As a result, both edges of the plug rail (5) are supported by the first rail (2) and the second rail (9). Dangling of the leading edge side of the plug rail (5) is thus prevented even when the plug distance (the distance that the door (8) moves in the vehicle body width direction) is long. In this way, it is possible to block the doorway without leaving a gap using the door (8) and to maintain the air tightness of the door (8).


Patent
MItsubishi Electric, Central Japan Railway Company and Mitsubishi Group | Date: 2015-04-22

In brake control based on commands of a plurality of systems, higher-level priority is ensured and a configuration for performing skid control is simplified. An adjustment valve (3) adjusts fluid supplied from a fluid source (2) to a predetermined pressure to output the pressure-adjusted fluid. An output valve (10) switches opening and closing based on a switching command. A skid detector (7) detects whether a car is skidding or not and notifies a brake controller (6). The brake controller (6) determines a pressure of fluid output by a control valve (4) and issues a command to an AV solenoid valve (8) and an RV solenoid valve (9) provided in the control valve (4), based on a brake command and a detection result of the skid detector (7). The brake controller (6) issues a command to a discharge valve (11) so as to discharge fluid from the discharge valve (11) when the skid detector (7) detects a skid. A relay valve (5) adjusts a pressure of fluid supplied from the fluid source (2) based on a higher pressure between a pressure of fluid output by the output valve (10) controlled by the discharge valve (11) and a pressure of fluid output by the control valve (4) to output the pressure-adjusted air to a brake cylinder.


Patent
Central Japan Railway Company and Toshiba Corporation | Date: 2016-11-02

An electric vehicle control device according to one embodiment includes a plurality of motors capable of transmitting motive power to a wheel of an electric vehicle and an inverter that supplies electric power to drive the motors. A controller controls the inverter and compares, when the electric vehicle drives under a certain velocity condition, a q-axis voltage feedforward value VqFF and a q-axis voltage command value Vq* used for controlling the driving of the motors, to detect an occurrence of miswire between the motors and the inverter when VqFF 1.5Vq* is satisfied. The controller can thus detect a miswire between the motors and the inverter which are mounted on the electric vehicle to drive the wheels of the electric vehicle.


Patent
Central Japan Railway Company and Fuji Electric Co. | Date: 2016-10-26

A controlling apparatus for a power converter 10 such as an inverter that operates a plurality of induction motors 41 parallely connected to each other and mechanically coupled to each other includes: current detection means 30 for detecting an output current of the power converter 10; current control means 90 for generating a voltage command value to make the current detection value equal to a current command value; voltage command amplitude calculation means 100 for calculating an amplitude of the voltage command value; storage means 110 for storing, for each sampling period, a combination of a primary frequency of the induction motors 41 and the amplitude of the voltage command value at that time; and gradient detection means 120 for calculating, according to stored information from the storage means 110, a value that is an increase in the amplitude of the voltage command value that is divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors 41 include at least one induction motor 41 whose phase sequence includes incorrect wiring with respect to the power converter 10.


Patent
Central Japan Railway Company and Fuji Electric Co. | Date: 2016-06-08

A controlling apparatus includes a storage unit for storing, for each sampling period, a combination of a primary frequency of connected induction motors and the amplitude of a voltage command value, and a gradient detection unit for calculating a value corresponding to an increase in the amplitude of the voltage command value divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors include at least one induction motor having a phase sequence that includes incorrect wiring with respect to the power converter.


Patent
Central Japan Railway Company | Date: 2016-11-30

A ballast retaining structure is used for a bedded track and provided on both sides in a transverse direction of the track bed and along the extending direction of the track bed to thereby retain the track bed from the both sides in the transverse direction thereof. The ballast retaining structure includes a first layered body constituted by a plurality of bag-like objects, each being formed in a bag shape and containing the ballast, stacked from a toe of slope to a top of slope of the track bed and disposed in the extending direction of the roadbed. The bag-like object has communication holes for communicating an inside and an outside of the bag-like object formed in at least upper and lower surfaces of the bag-like object.


Patent
Central Japan Railway Company | Date: 2015-03-11

Provided is a coil mounting structure for a device that comprises a primary coil to be supplied with an alternating current, and a secondary coil arranged facing the primary coil and configured to supply an electric power to a load provided in a housing by using an induced voltage generated by an electromagnetic field produced by the primary coil. The coil mounting structure comprises at least one mounting part provided in a region of the housing, the region facing the primary coil, and the at least one mounting part is configured to hold the secondary coil to the housing. The at least one mounting part comprises at least one gap area configured to interrupt a circuit generated by the at least one mounting part.


Patent
Central Japan Railway Company | Date: 2015-12-30

An earthquake prediction device comprises a predicted value calculation unit 16 that calculates, from a prediction formula below, a predicted value (MMIap) indicating a predicted intensity of a ground motion on the Modified Mercalli Intensity scale, using a maximum acceleration value (Aumax), which is a maximum absolute value among absolute values of vertical acceleration component of the ground motion, after a sensor starts detecting the ground motion caused by an earthquake. The prediction formula is: MMIap=alog_(10)(Aumax)+a


Patent
Central Japan Railway Company | Date: 2015-04-08

Providing a track status monitoring device comprising an acceleration detection unit disposed on a railway car and detecting an acceleration at least in the axle direction among accelerations generated on a wheel of the railway car; a rail position detection unit disposed on the railway car and detecting a value indicating a position of the rail in relation to the wheel in the axle direction; an integration unit that calculates a value based on a 2^(nd)-order integrated value of the acceleration detected by the acceleration detection unit; and a subtraction unit that counterbalances an undulating component of the wheel by subtracting a value detected by the rail position detection unit from a value calculated by the integration unit, and calculates an amount of horizontal-direction displacement of the rail.

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