Toshiba Industrial Products and Systems Corporation

Kabushiki Kaisha Toshiba

Oita University

Hiromu Shiota

Yuusuke Shima

Eiji Shimomura

Teruhiko Maeda

Masato Enokizono

Tsuyoshi Masuda

Keishi Ito

Shota Ikeda

Midori Yamashita

Tetsuo Nakamae

Yosuke Takai

Masaharu Kubota

Hiroshi Goto

Kazuaki Ito

Takashi Ikeda

Yoshinori Yamazaki

In a stacked core () for a stationary induction apparatus according to an embodiment, joint surfaces where yoke portions () and leg portions () are joined have protrusions () formed from a plurality of magnetic members (), and recesses () formed from a plurality of magnetic members alternately, and the yoke portions and the leg portions are configured to be butted in such a form that the protrusions and the recesses mesh with each other, sheet-like magnetic insulators () are each disposed in a butt-joint portion between the protrusions and the recesses in such a form as to bend in a bellows shape along a butt line, and an air gap is provided, and in a relationship between the number of the stacked magnetic members forming each of the protrusions and the number of the stacked magnetic members forming each of the recesses, the number of the stacked magnetic members forming each of the protrusions is made smaller than the number of the stacked magnetic members forming each of the recesses corresponding to a thickness of the magnetic insulator.

Stacked core for stationary induction apparatus

A coil of an embodiment is formed by winding a winding conductor in which a conductive conductor is molded by a resin, wherein the winding conductor has the resin filled to a surface of the conductor without leaving any spaces.

Coil and method for manufacturing coil

A liquid level indicating device includes a moving member which is arranged in a liquid tank storing a cooling liquid and moves vertically in conjunction with variation in a liquid level of the cooling liquid, a string member having one end portion connected to the moving member, the string member being configured to be bendable and non-extendable in a longitudinal direction, an indicator connected to the other end portion of the string member and which indicates a height position of the moving member as a remaining amount of the cooling liquid by operating in conjunction with movement of the moving member through the string member, and a tube member which is configured to be bendable and non-extendable in the longitudinal direction, has the string member passed therethrough, and connects the liquid tank and the indicator.

Liquid level indicating device and liquid-cooled electric appliance

The coupling coil structure, which is provided with a plurality of primary coils formed by winding a conductor wire and a plurality of secondary coils provided so as to generate mutual inductance with the plurality of primary coils and in which, among the plurality of primary coils, one primary coil is tapped at an intermediate portion thereof by another primary coil at right angles, is characterized in that, among the plurality of secondary coils, a secondary coil in mutual inductance with the one primary coil is constituted into a coupling coil by one conductor having a width at least the size in the axial direction of the primary coil.

Transformer using coupling coil

A vector-magnetic-property-controlling material according to the present embodiment is subjected to a scratching process in two directions that intersect on the surface of a steel material. An iron core according to the present embodiment is configured from an oriented magnetic steel material which has been subjected to a scratching process in two directions that intersect on the surface thereof.

Vector magnetic characteristic controlled material and iron core

A molded stationary induction apparatus is provided with: a winding the surface of which is covered with resin or an insulating material containing resin; a closed vessel in which the winding is housed and air having pressure exceeding atmospheric pressure is sealed; and a heat exchanger which cools the air in the closed vessel.

Molded stationary induction apparatus and method for manufacturing molded stationary induction apparatus

A transformer for a cycloconverter includes three single-phase transformers connected into a three-phase configuration. Each of the single-phase transformers includes a two-legged core, primary windings wound on at least one of legs of the two-legged core, and twelve secondary windings wound on at least one of the legs of the two-legged core. The secondary windings are connected to positive group converters and negative group converters of a three-phase output circulating current type cycloconverter composed of three single-phase output circulating current type cycloconverters connected in a three-phase configuration. Each of the single-phase output circulating current type cycloconverters includes two positive group converters and two negative group converters arranged in a twelve-pulse bridge configuration. The single-phase transformers include six sets of the secondary windings of the respective phases each of which sets is connected in a delta configuration and other six sets of the secondary windings each of which sets is connected in a wye configuration.

Transformer for cycloconverter

A power transformer for cycloconverters comprises an iron core having three legs, nine positive group windings, nine negative group windings, and nine power supply windings. Three of the positive group windings, three of the negative group windings and three of the power supply windings are wound on each leg of the iron core. In application to the cycloconverters, three positive and negative group windings are allotted to each of three converters of the cycloconverter so that the three-phase AC voltages are applied to the three converters respectively. The three power supply windings are allotted to each pair of positive and negative group windings so that a winding circuit impedance becomes equal between the positive and negative group windings. These windings are arranged into a single transformer in which the windings are magnetically connected together by one three-leg core.

Growing community of inventors

Mie, Japan

Hiromu Shiota