Kabushiki Kaisha Toshiba

Daisuke Iwashita

Tomoaki Takahashi

Souichi Ueno

Noriyasu Kobayashi

Kazuhiro Suzuki

Daisuke Hiramatsu

Masahiro Yamada

Kazuma Tsujikawa

Yoichi Uemura

Yutaro Arai

Masataka Sato

Shinji Mukoyama

Akira Okinaka

Masahiko Shibata

Naosuke Ote

Dai Nozaki

Kuniomi Niida

In one embodiment, an automatic voltage regulator includes a detection instruction unit configured to monitor a generator output voltage, and output an instruction signal when the output voltage of the generatordeviates from a predetermined range, the instruction signal being a signal of instructing detection of a specifying parameters generated in a generator field circuit of a generator excitation system; a field-parameter detection unit configured to detect the specifying parameters following to the instruction signal; and a comparison calculator configured to calculate a comparison value between the specifying parameters and a predetermined allowable upper-limit voltage-value of each component constituting the generator excitation system.

Automatic voltage regulator, automatic voltage regulating method, generator excitation system, and power generation system

A joined component comprises a first heated body, a second heated body, a brazing material, a first heated portion and a second heated portion. The first body comprises an insertion opening and an inserted portion coupled with the insertion opening. The second body comprises an insertion portion inserted into the inserted portion through the insertion opening. The first heated portion is provided at a first position including at least a part of the inserted portion and at least a part of the insertion portion. The second heated portion is provided at a second position separate from the insertion portion where a ratio 'L/D' satisfies being 0.4 or more and 0.8 or less, where 'L' is a length from the insertion opening to the second portion and &#x201c;D&#x201d; is an outer diameter of the second heated body.

Induction heating device, joining method, joined component and rotary electric machine including the same

A method comprises: a step of disposing a coil end connection portion of a first stator coil end and a solid connection at mutually adjacent positions after the solid connection and the cooling water pipe are brazed together; a step of disposing a heating coil around the solid connection and the first stator coil end in such a way as to bypass the cooling water pipe connection portion; and a step of supplying the heating coil with alternating current, so that the solid connection and the first stator coil end are induce-heated and then connected.

Method of assembling rotary electric machine

Growing community of inventors

Kawasaki, Japan

Daisuke Iwashita