Mitsubishi Heavy Industries Limited

Masaomi Yamada

Kousuke Katahira

Katsuaki Morita

Masahiro Yamaguchi

Hiroshi Yamashita

Masaya Mitake

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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Mihara, Japan

Masaomi Yamada