Hitachi, Ltd.

Kaoru Kawabata

Fumio Tajima

Kenji Miyata

Kazuo Tahara

Kohji Maki

Susumu Sasaki

Motoya Ito

Hiroshi Kanazawa

Tsutomu Kawamura

Ryoichi Takahata

Hiroshige Kikuchi

Ryousuke Nakamura

Susumu Ikeda

Naganori Motoi

Hideo Tatumi

A heat source system managing device includes: a predicted heat demand upper limit calculating unit configured to calculate a predicted heat demand upper limit by adding a prediction error to a predicted heat demand value for a heat source system; an operation plan preparing unit configured to prepare an operation plan of the heat source system to supply heat of the predicted heat demand upper limit to a consuming facility; a surplus stored heat quantity calculating unit configured to repeatedly perform a process of calculating a surplus stored heat quantity by subtracting a heat quantity consumed by the consuming facility from the predicted heat demand upper limit; and an operation plan changing unit configured to sequentially change the operation plan by decreasing a future operation rate of a refrigerator to cancel the surplus stored heat quantity.

Heat source system managing device, heat source system managing method, and program

A vehicular alternator is provided which can effectively utilize the magnetic flux of a permanent magnet disposed between claw-type magnetic poles and can improve an output of the alternator. The vehicular alternator comprises a rotor and a stator constituted by coiling stator windings over a stator core, the rotor comprising a pair of claw-type magnetic poles arranged in an opposed relation, a permanent magnet disposed between adjacent two of a plurality of claws provided on the pair of claw-type magnetic poles, and field windings coiled radially inward of the plurality of claws. Each of the plurality of claws of the rotor is formed to have a shape coming into contact with the whole of a magnetic pole surface of the permanent magnet.

Vehicular alternator

An electromagnetic driving system controls an electromagnetic driving device by a simulator. The driving system includes a simulation system. The simulation system includes a preprocessor for generating initial data used in the simulation, an analyzer for executing coupling analysis for magnetic field analysis, circuit analysis and control mode analysis, a postprocessor for displaying the output data of the system on a display, and a library for storing data given to and provided by the system. The simulation system is combined with the electromagnetic driving device to control the electromagnetic driving device.

Electromagnetic driving system for controlling electromagnetic driving

Growing community of inventors

Tokyo, Japan

Kaoru Kawabata