Mitsubishi Heavy Industries Limited

Tohoku University

Asahi Kasei Kabushiki Kaisha

National University Corporation Yokohama National University

Toshiyuki Hirano

Takao Kuroiwa

Takeshi Fujita

Masaaki Shibata

Tatsuo Yamaguchi

Jun Yoshida

Kentaro Shindo

Nobuyasu Nakamura

Keisuke Ota

Hiroaki Takeuchi

Atsushi Yuge

Toru Yumoto

Takahiro Sawamura

Takatoshi Matsushita

Shinji Arinaga

Shigenori Mitsushima

Kouji Esaki

Kazuhisa Tsutsumi

Kai Karikomi

Nozomu Kawasetsu

Akira Watanabe

Yasutaka Kimura

Yuichi Fujii

Norikazu Fujimoto

Yasuhiro Nakajima

Koichi Matsuzawa

Jiajin Bi

A windmill blade includes a blade main body and a leading edge protector. The leading edge protector includes a conductive plate covering a leading edge, and a conductive mesh member connected to the conductive plate along a blade chord direction of the windmill blade. The conductive mesh member is provided with a plurality of holes. A skin or an adhesive at least partially enters the plurality of holes, so that the leading edge protector is fixed to the skin.

Windmill blade, windmill, and method of manufacturing windmill blade

A windmill blade includes a leading edge protector at a leading edge portion of a blade main body including a skin surrounding a hollow space. The leading edge protector is fixed to the skin from the hollow space.

Provided are a solar cell that can be manufactured by non-vacuum process and can have more excellent photoelectric conversion efficiency and a manufacturing method therefor as well as such a semiconductor device and a manufacturing method therefor. A solar cell, includes at least a first semiconductor layer and a second semiconductor layer. The first semiconductor layer includes metal oxide particles of 1 nm or more and 500 nm or less in average particle size and a compound having relative permittivity of 2 or more and 1,000 or less. For instance, the content of the organic compound in the first semiconductor layer is 10 mass % or more and 90 mass % or less.

Solar cell, manufacturing method therefor, semiconductor device, and manufacturing method therefor

Provided are a solar cell that can be manufactured by non-vacuum process and can have more excellent photoelectric conversion efficiency and a manufacturing method therefor as well as such a semiconductor device and a manufacturing method therefor. A solar cell, includes at least a first semiconductor layer () and a second semiconductor layer (). The first semiconductor layer () includes metal oxide particles of 1 nm or more and 500 nm or less in average particle size and a compound having relative permittivity of 2 or more and 1,000 or less. For instance, the content of the organic compound in the first semiconductor layer () is 10 mass % or more and 90 mass % or less.

Provided are a wind turbine blade, with which effective reinforcement against possible flexural deformation in a longitudinal direction is realized, and a reinforcing method for the wind turbine blade. The wind turbine blade includes a hollow blade main body having a cylindrical blade root portion and extending from the blade root portion along a blade length direction, and a reinforcing plate provided in contact with an inside surface of the blade root portion and formed of an elongated member having a dimension along the blade length direction that is larger than a dimension along a circumferential direction of the blade root portion.

Wind turbine blade and reinforcing method for wind turbine blade

A wind turbine blade is provided with an outer skin layer formed of fiber-reinforced plastic, and a plurality of main structural members formed of fiber-reinforced plastic integrally with the outer skin layer to extend in a blade length direction. The main structural members include a plurality of main dorsal structural members positioned on a dorsal side of the wind turbine blade, and a plurality of main ventral structural members positioned on a ventral side of the wind turbine blade.

Wind turbine blade with sufficiently high strength and light weight

A wind turbine blade includes a laminated structure having an outer shell () having a shape of the blade, an upwind-side reinforcing section () which reinforces a upwind-side part of the blade in the outer shelland a downwind-side reinforcing sectionwhich reinforces a downwind-side part of the blade in the outer shell. The outer shellincludes a first multidirectional material, a first unidirectional reinforcing materialand another multidirectional materialwhich are layered. The upwind-side reinforcing sectionincludes another unidirectional reinforcing materialprovided between the first unidirectional reinforcing materialand another multidirectional material. The downwind-side reinforcing sectionincludes yet another unidirectional reinforcing material provided between the unidirectional reinforcing materialand the multidirectional material. The outer shellincludes a first core memberrespectively provided between the upwind-side reinforcing sectionand the downwind-side reinforcing sectionon a leading edge side, and between the upwind-side reinforcing sectionand the downwind-side reinforcing sectionon a trailing edge side.

Wind turbine blade and wind turbine generator using the same

The present invention proposes a lightning protection device of a windmill blade, comprising a tip receptor assembly having receptors which are mounted, in particular to, the tip end part of the blade where the blade profile becomes smaller, and having a simple structure so as to be readily assembled, and an intermediate receptor assembly having a receptor which is set at the outer surface of the blade so as to exhibit an effective countermeasure against increasing of the air pressure in the blade upon a lightning striking upon the blade, a lightening current being discharged to the ground from the receptors through connection equipment such as lead wires laid through the inside of the blade the windmill body and bypass brushes, characterized in that a base plate made of an electrically conductive material and connected thereto with the lead wires is embedded in the blade, and the receptors are secured and supported to the base plate, being exposed at the outer surface of the blade. Further, the present invention also proposes a method of assembling the lightning protection device.

Lightning protection device of windmill blade

Growing community of inventors

Tokyo, Japan

Toshiyuki Hirano