Mitsubishi Heavy Industries Limited

Nec Corporation

Nec Engineering, Ltd.

Satake Corporation

Mhi Vestas Offshore Wind A/s

Euros Entwicklungsgesellschaft Fur Windkraftanlagen Mbh

Koji Fukami

Tohru Kimura

Masaaki Shibata

Kenji Sato

Yuji Yatomi

Takashi Yamamura

Yoshihiro Fujioka

Daisuke Wakata

Atsushi Matsuo

Osamu Hasegawa

Takatoshi Matsushita

Hitoshi Yano

Keisuke Ota

Takeshi Fukumori

Nobuhide Yoshida

Jun Noda

Yuuichi Aoki

Kengo Imaoka

Hidenori Mizuno

Akitake Mitsuhashi

Daigo Taguchi

Kazunobu Kajihara

Toshihide Noguchi

Teruki Sukenari

Yoji Kashiwa

Kunihiro Suzuki

Kazuki Hayashida

Teppei Fujitsuka

Tsutomu Hako

Christoph Klein

Hinrich Graue

Masayuki Hiraishi

Jens Alwart

Motooka Keiji

A vortex generator for a wind turbine blade includes: a platform portion to be fixed to a surface of the wind turbine blade; and at least one fin erected on the platform portion. The platform portion includes marks disposed on a pair of opposite positions in an outer edge region of the platform portion and indicating orientation of the vortex generator.

Vortex generator for wind turbine blade, wind turbine blade, wind turbine power generating apparatus, and method of mounting vortex generator

A vortex generator for a wind turbine blade to be mounted to a wind turbine blade includes: a platform portion to be mounted to a surface of the wind turbine blade; and at least one fin disposed upright on the platform portion. The platform portion has a cross section having a curved convex shape, at least along a blade spanwise direction of the wind turbine blade.

Vortex generator, wind turbine blade, and wind turbine power generating apparatus

A vortex generator for a wind turbine blade includes a plurality of main fins disposed on a surface of the wind turbine blade; and at least one first sub fin having a fin chord length and a fin height which are smaller than those of each of the main fins, and disposed on the surface of the wind turbine blade along a first virtual line extending from a first end portion of a main fin row at a side of a blade tip or a blade root of the wind turbine blade. An expression d&#x2264;dis satisfied, provided that d is a distance between the main fin row and the first sub fin disposed next to the first end portion of the main fin row, and dis a maximum distance between an adjacent pair of the main fins in the main fin row.

Vortex generator, installation method for the same, wind turbine blade, and wind turbine power generating apparatus

A method of mounting a vortex generator to a wind turbine blade includes: a step of specifying positions of at least two reference points at different coordinates in a blade spanwise direction of the wind turbine blade on the wind turbine blade; and a step of adjusting a mounting direction of the vortex generator and mounting the vortex generator to the wind turbine blade, with reference to a line connecting the reference points. The step of specifying the positions of the reference points comprises specifying the position of each of the reference points on the basis of: a length along a surface of the wind turbine blade in a chordwise direction from a trailing edge of the wind turbine blade or from a blade spanwise directional line extending along the blade spanwise direction on the surface of the wind turbine blade; and a distance in the blade spanwise direction from a blade root or from a blade tip of the wind turbine blade.

Mounting method and template for vortex generator

A wind turbine blade includes a blade body; and a vortex generator mounted to a surface of the blade body. The vortex generator includes a plurality of fin sets, each fin set including a plurality of fins disposed to protrude from the surface of the blade body at different positions from one another in a blade spanwise direction. The plurality of fin sets is positioned so that, in a planar development view of the surface of the blade body, an angle &#x3b8; formed by a center axis of a blade root of the blade body with a line connecting two of the fin sets which are adjacent in the blade spanwise direction increases toward the blade root, at least in a part of a region of the blade body between a position of the blade root and a maximum chord-length position of the blade body in the blade spanwise direction.

Wind turbine blade, wind turbine rotor, wind turbine power generating apparatus, and method of mounting vortex generator

A vortex generator for a wind turbine blade includes a fin protruding from a surface of the wind turbine blade, being oriented so that a fin chord of the fin is oblique to an in-flow direction of wind which flows toward the wind turbine blade, having a suction surface which faces toward downstream with respect to the in-flow direction of the wind and which has a curved convex shape, and having a maximum fin blade-thickness ratio tmax/C which satisfies an expression of 0.10&#x2264;tmax/C&#x2264;0.12 in a height range of at least a part of the fin, where the maximum fin blade-thickness ratio tmax/C is a ratio of a maximum fin blade thickness tmax to a fin chord length C.

A method of testing a receptor of a wind turbine includes a step of moving an unmanned aerial vehicle (UAV) close to the receptor of a wind turbine blade mounted to a hub of the wind turbine, and performing an electric continuity test on the receptor.

Method of testing wind-turbine receptor

Vortex generator for wind turbines

A wind turbine blade includes a blade body whose chord length increases from a blade tip toward a blade root. The blade body includes a blade tip region located near the blade tip and whose chord length increases gradually toward the blade root, the blade tip region having a substantially constant first design lift coefficient, a maximum-chord-length position located near the blade root and having a maximum chord length, the maximum-chord-length position having a second design lift coefficient higher than the first design lift coefficient, and a transition region located between the blade tip region and the maximum-chord-length position. The transition region has a design lift coefficient increasing gradually from the first design lift coefficient to the second design lift coefficient in a direction from the blade tip toward the blade root.

Wind turbine blade, wind power generation system including the same, and method for designing wind turbine blade

A manufacturing method of a wind turbine generator includes a cutting step of cutting a base blade at m cutting planes into (m+1) sections where m is an even number, the m cutting planes being at different positions in a blade length direction; and joining step of joining (m/2+1) sections of the (m+1) sections together to obtain a wind turbine blade which is shorter than the base blade, the (m/2+1) sections including a blade-root section which is closest to a blade root and a blade-tip section which is closest to a blade tip, the blade-root and blade-tip sections being non-adjacent to each other.

Wind turbine blade and manufacturing method thereof

When a distance from a front edge along a blade chord line is represented by X and a distance from the blade chord line to a blade back side is represented by Y, a blade back shape of a wind turbine blade includes a first region extending from the maximum blade thickness position toward the rear edge with dY/dX as a primary derivative amount of Y to X decreasing by a first amount of change, a second region on a side of the rear edge of the first region and extending toward the rear edge with dY/dX having a second amount of change smaller than the first amount of change, and a third region on the side of the rear edge of the second region and connected to the rear edge with dY/dX decreasing by a third amount of change larger than the second amount of change.

Wind turbine blade, wind turbine generator including wind turbine blade, and method for designing wind turbine blade

Provided is a wind turbine blade that can improve aerodynamic performance in a blade-tip region and reduce aerodynamic noise. A wind turbine blade includes a blade body having a chord length that decreases from a blade root side to a blade tip side, wherein the blade body includes a blade-tip region in which a dimensionless radial position is within the range of 0.6 to 1.0, inclusive, the dimension less radial position being the ratio of radial position to blade radius (&#xbd; of a blade diameter), and a blade-body region in which the dimensionless radial position is smaller than 0.6, and wherein a maximum-blade-thickness position of a blade cross-section in the blade-tip region is closer to a leading edge than a maximum-blade-thickness position of a blade cross-section in the blade-body region.

Wind turbine blade and wind turbine generator including the same

A communication network of the present invention includes: a plurality of superordinate nodestoforming a cascade type topology; and a plurality of terminal nodesto, connected to at least one superordinate node from among said plurality of superordinate nodes and forming a star type topology with the superordinate node connected.

Communication network, information processor and address assigning method

There is provided a yaw control technique for a wind turbine generator that can decrease the magnitude of the wind direction deviation even though the wind direction changes gradually over an extended period of time while suppressing an increase in the number of yaw rotations. Further, there is provided a yaw control technique for a wind turbine generator that can improve the efficiency of a wind turbine generator by performing yaw rotation at an appropriate timing through early detection of transitional changes in the wind direction.

Wind turbine generator and its control method

Growing community of inventors

Tokyo, Japan

Koji Fukami