Hitachi, Ltd.

Mitsubishi Hitachi Power Systems, Ltd.

Solar Frontier K.k.

Mitsuru Onoda

Keiji Suzuki

Shigeo Amagi

Tomoya Tsunoda

Yasuaki Kageyama

Tatsuo Honda

Keiichi Morikawa

Kenji Ikeda

Tsutomu Kono

Hideaki Mori

Nobuaki Tanaka

Nobuaki Nakasu

Tadashi Sonobe

Yasuomi Yagi

Yutaka Higashimura

Hiroki Nakatsuchi

Hisashi Morooka

Saburo Usami

Kazuo Goto

Hiroshi Miyao

Harumasa Tsuchiya

Yoshitaka Tsutsui

Shinji Kato

Takahiro Sato

Hideki Sakai

Hiroaki Kojima

Kengo Iwashige

Yuuki Narita

Takanori Satoo

Hiroyuki Kamiya

Mitsuru Arasaki

Bagwadkar Ninad

Toshiaki Yamaura

Tatsuji Kanbara

Yoshimi Kurahara

Tomoyasu Yamada

Tetsuji Itou

Natsuki Hamada

Makoto Takamura

In an attachment structure for attaching a photovoltaic cell module having flexibility to an installation surface or an attachment member, a back surface of the photovoltaic cell module is attached to the installation surface or the attachment member by being adhered by an adhesive material.

Attachment structure of photovoltaic cell module

A fixing force measuring apparatus including a section for applying a predetermined controlled hammering force to a wedge surface to generate a hammering sound, a section for controlling the hammering sound generated, a section for obtaining plural kinds of feature quantities such as a feature quantity due to a hammering sound energy, and a feature quantity due to a frequency of the hammering sound from the hammering sound collected by an arithmetic operation, and a section for obtaining a fixing force corresponding to the plural kinds of feature quantities by using a correlative relationship between the wedge fixing force previously obtained, and the plural kinds of feature quantities.

Apparatus and method for measuring fixing force

According to a method by a frequency analysis of tap tones at the time when a tightness of a ripple member fixed by an elastic force has been tapped by a hammer or a method of detecting a response at the time when the ripple member has been vibrated, an enough precision cannot be obtained for a tightness estimation. A tapping force is applied to a plurality of positions on the member surface, thereby allowing a plurality of tap tones to be generated. Feature amounts are obtained from the plurality of tap tones. An average feature amount is obtained by averaging the feature amounts. The tightness of the ripple member is estimated from the average feature amount by using a correlation between the tightness of the ripple member and the average feature amount.

Tightness measuring apparatus and measuring method

The present invention provides a method for analyzing growth of void of resin in a porous material which comprising the steps of inputting data of the shape of a porous material filled with a resin material, and dividing the shape of the porous material into three-dimensional solid elements; inputting physical properties of the porous material, and boundary conditions including a pressure that is applied to the porous material; obtaining a resin-density distribution in the porous material through fluid analysis using a database obtained by experimentally measuring in advance a temporal change in a volume of gas generated from the resin material and porous material during heating, changes in a compressive force and compressive displacement respectively occurring when the porous material impregnated with the resin is compressed, and a change in a flow resistance of the resin; and comprehensively grasping production, growth, and distribution of voids deriving from gas generation.

Method for analyzing growth of void of resin in a porous material

The present method aims at preventing breakdown by selecting conditions for preventing the occurrence of voids via analysis. According to the present method, a database related to the time variation of amount of generated gas or number of moles when a solid member is heated is experimentally formulated in advance, and the amount of generated gas from the member and the specific heat ratio of gases are entered for analysis in order to predict via analysis the generation of voids within the resin material when the solid member is heated, to thereby select conditions for preventing voids.

Method for predicting volume change of void generated in resin filled in porous body, and method for analyzing flow of resin material in porous body

The present invention is designed to provide an insulation coil with high insulation reliability using a dry mica tape, an integral impregnation coil and a mica tape for the electrical rotating machines using these coils, said mica tape having a long shelf life and capable of preventing run-off of the impregnating epoxy resin composition during curing, with the cured product of said epoxy resin composition being high in heat resistance. It is also envisaged to provide a single insulation coil using a mica tape containing epoxy adduct imidazole as an epoxy resin curing catalyst or a mica tape containing a mixture of epoxy adduct imidazole and zinc naphthenate. An integral impregnation coil made by using said insulation coil and an epoxy resin composition, and the electrical rotating machines using such coils are also provided.

Winding applied single vacuum pressure impregnation insulation system, a winding applied global vacuum pressure impregnation insulation system and an electrical rotating machine having said insulation systems

When a rotating electrical machine winding is inserted into a slot with a protective insulation intervening between them, a semiconductive insulating layer is lap-wound between an interlayer insulating layer of the rotating electrical machine winding and the protective insulation, the semiconductive insulating layer being formed by center-folding a continuous semiconductive sheet in the longitudinal direction. A thermal stress relaxation layer is provided inside the center-folded continuous semiconductive sheet so that thermal stress exerted in thickness direction of the insulating layers is absorbed.

Rotating electrical machine winding, rotating electrical machine, and semiconductive insulating component used therein

In order to provide an electric machine winding having an insulating layer excellent in electric characteristics and an insulating layer of an electric machine winding excellent in electric characteristics, a high-thermal-conductivity insulating layer is formed around the peripheral portion of a winding conductor by the use of a high-thermal-conductivity insulating tape having a mica layer , a reinforcing material layer , and a high-thermal-conductivity filler layer , wherein the amount of resin of the mica layer makes up 10 wt % to 25 wt % of the total weight of the insulating material and wherein the amount of resin of the high-thermal-conductivity filler layer makes up 10 wt % to 25 wt % of the total weight of the insulating material.

Insulating material and electric machine winding and method for manufacturing the same

In order to provide windings for electrical rotating machines having an insulating film superior in electrical characteristics, a high heat conductive insulating film is formed at outer periphery of wound conductor using a high heat conductive insulating tape, which includes a mica layer a reinforcement layer and a high heat conductive filler layer wherein the resin content in each layer of the mica layer and the high heat conductive filler layer is specified in the range of 10-25% by weight based on the whole weight of the material. 1-80% by weight of said filler is spherical.

Insulating material, windings using same, and a manufacturing method thereof

An electric rotating machine having a rotor, rotatably disposed in an inner radius side of a stator through a gap, including rotor windings contained in a plurality of slots formed in a rotor core, a slot insulation placed between the rotor winding and the slot, an insulation block placed between a wedge arranged at a peripheral side of the rotor core outward of the rotor winding of the slot and the rotor winding. At least one of the slot insulation and the insulation block is an insulation formed by filling or mixing granular and/or short-fiber insulating materials having a thermal conductivity higher than 5 W/m&middot;K in a resin and a thermal conductivity in a thickness direction higher than 0.35 W/m&middot;K.

Electric rotating machine

In order to provide windings for electrical rotating machines having an insulating film superior in electrical characteristics, a high heat conductive insulating film,is formed at outer periphery of wound conductor,using a high heat conductive insulating tape, which includes a mica layer,, a reinforcement layer,, and a high heat conductive filler layer,, wherein the resin content in each layer of the mica layer,and the high heat conductive filler layer,is specified in the range of 10-25% by weight based on the whole weight of the material. 1-80% by weight of said filler is spherical.

Insulating material windings using same and a manufacturing method thereof

An the electric rotating machine which is compact and of reduced cost by improving the thermal conductivity of the main insulation in the thickness direction while maintaining the insulation breakdown voltage of the main insulation high. The initial breakdown voltage V in the thickness direction of the main insulator 30 of the stator winding 3 is higher than 20 kV/mm, and the thermal conductivity &lgr; in the thickness direction is within a range of 0.35 to 1 W/m&middot;K, and the product V&lgr; of the initial breakdown voltage V and the thermal conductivity &lgr; satisfies a relationship of 7&lE;V&lgr;&lE;20 (MWA/m,&middot;K). The amount of resin is within a range of 20 to 50 weight % of the main insulation material.

Electric rotating machine with reduced thickness and volume of insulation

The high thermoconductive insulating film 11 was formed around the outer periphery of the wound conductors 10, using the high thermoconductive insulating tape 1 comprising the mica layer 3, the reinforcement layer 5, and the high thermoconductive filler layer 7, wherein the resin content in each layer of the mica layer 3 and the high thermoconductive filler layer 7 is specified to the range of 10-25% by weight of the total weight of the material.

Insulating material and windings thereby

An electrically insulated coil, characterized in that an electrical insulation layer wound around an electrical conductor is formed by laminating layers of glass flakes having a thickness of 0.2-1 .mu.m and a diameter of 40-250 .mu.m on a backing member of a sheet-like electrical insulation material and by impregnating with a semi-cured thermosetting resin. An electrically insulated coil is provided, having an excellent partial discharge resistance as well as having a high dielectric break down strength even when subjected to a large mechanical distortion.

Sheet material for electrical insulation, prepreg and electrically

Growing community of inventors

Takahagi, Japan

Mitsuru Onoda