Mitsubishi Heavy Industries Limited

Masaya Mitake

Kousuke Katahira

Masahiro Yamaguchi

Hiroshi Yamashita

Masaomi Yamada

Yasuyuki Suzuki

Takatoshi Matsushita

Katsuaki Morita

Hiroshi Ogawa

Hiroyuki Kono

Tetsuo Takata

Masanori Maruyama

Takayuki Kono

Kentaro Hayashi

Yuji Maekawa

Mitsuaki Hoshi

Keiji Nagasaka

Hiroyuki Yagita

Katsuhiko Shoda

Atsuyoshi Saimen

Takeya Kawamura

Yuichiro Yazaki

Hitoshi Onuma

A bidirectional DC-DC converter includes a first circuit that is configured to process a first voltage being a DC voltage and that includes a first electronic component including a first switching element; a second circuit that is configured to process a second voltage or a third voltage, the second voltage being a DC voltage supplied to an electric vehicle, the third voltage being a DC voltage generated in an electric vehicle, and that includes a second electric component with a lower withstand voltage than the first electronic component, the second electric component including a second switching element; and a control circuit configured to control switching of at least one of the first switching element and the second switching element wherein the bidirectional DC-DC converter is configured to convert the first voltage into the second voltage or convert the third voltage into the first voltage.

Bidirectional DC-DC converter, traffic system, control method, and non-transitory computer-readable storage medium

A valid cars determining unit determines the number of valid cars of each train such that a passenger transport volume per unit time of a plurality of trains is not less than a necessary transport volume and the total number of valid cars is minimized when the plurality of trains run with a predetermined number of operational cars per unit time. A control information generating unit generates control information for performing control which causes trains having valid cars corresponding to the number of valid cars determined by the valid cars determining unit to operate at a predetermined interval.

Service management device, train control method, and program

An operating mode determining unit determines an operating mode of each of a plurality of vehicles to be either one of a normal operating mode and an energy saving mode on the basis of a necessary boarding and alighting time which is required to allow passengers to board or alight from the vehicles at each of a plurality of stations. An index value specifying unit specifies an index value on the basis of total energy consumption when the vehicles operate in the operating mode determined by the operating mode determining unit, a difference between the necessary boarding and alighting time and a boarding and alighting time, or the number of changing times of operating modes. An operating plan determining unit determines the operating mode of each of the vehicles to be an operating mode having a smallest index value.

Vehicle control device, transport system, vehicle control method, and program

A temperature control method is used for controlling a temperature of an electric storage devicemounted on a vehicleat the time when the vehicleruns on a track. In the method, when a minimum voltage value Vcorresponding to an internal resistance R of the electric storage devicereaches a first predetermined voltage value Vnear a minimum allowable voltage value VL of the electric storage device, the electric storage deviceis controlled such that the electric storage devicehas a temperature at which the minimum voltage value Vis maintained at the first predetermined voltage value V.

Temperature control method and temperature controller

A charging method is used for a transportation vehicle without a contact wire. The transportation vehicle is configured so that when a vehicle () equipped with an energy storage device () stops at a station on a track (), the energy storage device () of the vehicle () is charged by a charging device () provided on a ground side. The charging method includes charging, by the charging device (), the energy storage device () with a voltage set value (VS) which is near a maximum allowable voltage value (VH) of the energy storage device ().

Method and system for charging transportation vehicle without contact wire

A memory stores traveling schedule information of a vehicle without a contact wire, information on a next station located on a traveling interval and information about a plurality of traffic lights on the traveling interval temporarily, and a velocity pattern calculator for calculating a velocity pattern of the vehicle based on the traveling schedule information, the information on the next station and the information about the plurality of the traffic lights, in which the velocity pattern calculator calculates a velocity pattern which satisfies conditions that the vehicle is never stopped at a first traffic light, that when the vehicle departs from a current stop station, the vehicle is accelerated at an constant acceleration a and that after the acceleration, the vehicle travels at a constant first velocity V.

Traveling assistant system for vehicles without contact wire

Structure for mounting batteries in a guideway electric vehicle driven by a battery-driven motor is provided, with which balancing in weight of the vehicle is properly achieved, batteries can be cooled enough, battery rooms are completely sealed from the passenger room, and running stability of the vehicle is ensured. The battery mounting structure is composed such that battery rooms () for mounting battery modules () comprised of a plurality of batteries are formed on a floor () of the vehicle in both sides adjacent side walls () of the vehicle respectively, each of the battery rooms () being partitioned from the passenger cabin of the vehicle hermetically by a partition plate (); suction openings () for introducing outside air into the battery room () are provided in the floor () or side wall () of the vehicle in each battery room (), and exhaust openings () for releasing air to the outside of the vehicle are provided in the side wall () thereof in each battery room (); whereby the battery module () in each battery room () can be cooled by outside air.

Guideway electric vehicle mounted with batteries

Provided is a noncontact type power feeder system for feeding an electric power to a mobile object, which enables a quick charge and transmission of a high electric power and in which a power feeder and a power receiver can be readily manufactured at low cost, comprising a power feeder arranged along a running road surface for the mobile object, and a power receiver mounted to the mobile object, the power feeder and the power receiver being opposed face-to-face to each other for feeding an electric power, wherein the power feeder is secured on the running road surface for the mobile object and characterized in that magnets are mounted to the upper surface of the power feeder which is accommodated in a recess formed in the running road surface and which is supported by resilient springs.

Non-contact type power feeder system for mobile object

Provided is a railway type feeder-lineless traffic system in which the weight of a vehicle is reduced while the structure of the vehicle is simplified, and it is possible to carry out a quick charge during a brief stopping time at a station or the like. A charging method in a feeder-lineless traffic system in which a vehicle mounted thereon with an electric storage unit runs on a predetermined pathway with the use of a power, and the electric storage unit in the vehicle is charged from a charger set up on the pathway, wherein a contact charging way in which a power feederconnected to the chargerset up on the ground is made into contact with a power receivermounted on a vehicleis carried out when the vehiclecomes to a stop, and a commercial electric power is converted by the charger and a charge control unit of the charger into a DC power which is chargeable direct into the electric storage unit, and the DC power is quickly charged into the electric storage unit through the intermediary of the power feeder and the power receiver while a current value of the DC power is controlled.

Feeder-lineless traffic system and charging method therefor

Occurrence of overcharging and over discharging of batteries mounted on vehicles that travel on tracks in a wireless transit system is prevented by estimating a state of charge (SOC) of the batteries with accuracy. An equivalent circuit of the battery is composed of three circuit elements connected in series, including (i) a first component resistance R1 (ii) a component circuit which includes a capacitance C and a second component resistance R2 connected in parallel and (iii) an open circuit voltage of the battery. The open circuit voltage of the equivalent circuit is calculated using R1 calculated from measurements of current and voltage of the battery, as well as values k=R2/R1 and &#x3c4;=C&#xd7;R2. The SOC if the battery is calculated from the open circuit voltage.

Battery SOC estimation program, wireless transit system, and method of charging the battery

A noncontact type power feeder system for feeding a power to a mobile object, in which a power feeding portion and a power receiving portion can be easily manufactured at low costs and which can transmit a high power. The noncontact type power feeder system for a mobile object, comprises a power feeding portion provided in a surface on which the mobile object runs, and a power receiving portion provided in the lower part of the mobile object at a position facing to the power supply portion, the each of the power feeding portion and the power receiving portion is composed of windings formed in an oval shape, and a magnetic planar core formed therein with a recess in which the windings are accommodated so that the longitudinal direction of the oval shape of the windings is extended along the travel direction of the mobile object, the planer core is composed of several planar blocks each having a rectangular surface, several blocks being laid so that long sides of the rectangular surfaces are extended in the travel direction of the mobile object, in which several blocks are also laid in the direction orthogonal to the travel direction, and several blocks being superposed one upon another, the recess of the planar core is defined by thick wall parts in which the planar cores are superposed on the surface of the planar core, outside and inside of the oval shape part of the windings.

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Hiroshima, Japan

Masaya Mitake