Mitsubishi Heavy Industries Limited

Kazuhisa Tsutsumi

Hiroyuki Yamaguchi

Masayuki Shimizu

Taku Ichiryuu

Masaaki Shibata

Yoshiyuki Hayashi

Takuro Kameda

Uwe Stein

Daniil Sergeevich Dumnov

Toyoaki Furukawa

Yuuji Yatomi

Hauke Karstens

Takatoshi Matsushita

Shinji Arinaga

Kentaro Hayashi

Takao Kuroiwa

Daigo Watanabe

Atsushi Maekawa

Kai Karikomi

Satoshi Iwasaki

Toshiyuki Hirano

Nobuyasu Nakamura

Toshihide Noguchi

William Rampen

Shinji Kawabata

Takuya Koyanagi

Hidekazu Ichinose

Fumio Hamano

Yoshiyuki Amano

Robert Fox

Stephen Salter

Venkata Pappala

Stephen Laird

Alasdair Robertson

Yasuhiro Korematsu

Noguchi Toshihide

Takeo Ohira

Shigeru Hokazono

Michiya Uchida

Fergus Mcintyre

John Stevenson

Takumi Mine

Erik Muenz

Francesco Baldini

It is intended to provide a power generating apparatus of renewable energy type in which a braking mechanism is attached to a rotor arranged upstream of a hydraulic transmission while saving space, and a method of attaching and detaching a blade for the apparatus. The power generating apparatus of renewable energy type is provided with: a rotor having a hub and a main shaft, the hub having at least one blade mounted thereon, the main shaft being coupled to the hub; a generator which generates power by torque inputted from the rotor; and a hydraulic transmission which transmits the torque from the rotor to the generator. A brake disc is fixed to the rotor by tightening together with the hub and the main shaft. A brake caliper is provided to force a brake pad against the brake disc to apply a braking force to the rotor.

Power generating apparatus of renewable energy type and method of attaching and detaching blade

A hydraulic pump unit includes a cylindrical member that is fit into an outer circumference of the main shaft and a hydraulic pump body arranged on an outer circumferential side of the cylindrical member. The hydraulic pump body includes a ring cam mounted on the outer circumference of the cylindrical member, a pump bearing, a pump housing, a plurality of pistons housed in the pump housing and actuated by the ring cam, and a plurality of cylinders which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction. The hydraulic pump unit is configured such that the pump unit is insertably fixed to the main shaft by the cylindrical member.

Hydraulic pump structure for wind turbine generator or tidal current generator and method of mounting hydraulic pump

Described is a power generating apparatus and a rotor locking method for the apparatus, which is capable of locking the rotor without using a huge braking mechanism. The power generating apparatus of renewable energy type includes a blade, a rotor including a hub and a main shaft, a hydraulic pump of variable displacement type driven by rotation of the rotor, a hydraulic motor driven by operating oil pressurized by the hydraulic pump, and a generator coupled to the hydraulic motor. The rotor locking method for the power generating apparatus may include the steps of: decelerating the rotor by adjusting a pitch angle of the blade: after the decelerating step, stopping the rotor by applying a braking force by the hydraulic pump to the rotor; and locking the rotor so that the rotor is immovable in a rotation direction.

Regeneration energy type electric generation apparatus and its rotor fixing method

It is intended to provide a power generating apparatus of renewable energy type which can transmit large torque and has a low-cost and readily processable structure of fixing a hydraulic pump to the main shaft and a method of mounting the hydraulic pump. A plurality of key slotsare formed at an end on the back-end side of the main shaft. A plurality of keysA,B are inserted in the key slots. The keysA,B include a reference keyA to be inserted in one of the key slots and a split keyB to be inserted in the other of the key slots. The split keyB is separated into a first key piecehaving a projection to be inserted in a first groove formed in the main shaft and a second key piecehaving a depression to be inserted in a second groove formed in the cylindrical member. The pair of key piecesare arranged so that the projection and the depression engage with each other. The projection and the depression of the first and second key pieces have side surfacesA,B,A andB formed along a radial direction of the main shaft. The side surfacesA,B,A andB are contact surfaces of the first and second key piecesand incline with respect to the axial direction of the main shaft.

Power generating apparatus of renewable energy type and method for installing hydraulic pump

An object of the invention is to provide a wind turbine generator or a tidal current generator which is equipped with a hydraulic transmission and achieves a superior power generation efficiency, and a operation method thereof. The wind turbine generatorcomprises a hydraulic pumpof a variable displacement type which is rotated by the main shaft, a hydraulic motorof a variable displacement type which is connected to the generator, and a high pressure oil lineand a low pressure oil linewhich are arranged between the hydraulic pumpand the hydraulic motor. The pump controllerobtains a target torque of the hydraulic pumpat which a power coefficient becomes maximum, and then sets a displacement Dof the hydraulic pumpbased on the target torque and the pressure in the high pressure oil line. The motor controllersets a displacement Dof the hydraulic pumpbased on a discharge amount Qof the hydraulic pump obtained from the displacement Dof the hydraulic pumpso that the rotation seed of the generatorbecomes constant.

Wind turbine generator and tidal current generator and operation method thereof

A power generating apparatus of renewable energy type in which a hydraulic pipe between a hydraulic pump installed inside a nacelle and a hydraulic motor installed near a bottom part of a tower can handle the turning motion of the nacelle. In the power generating apparatus of renewable energy type, a hydraulic pump inside the nacelle and a hydraulic motor near a base end part of a tower are connected by a first double pipe and a second double pipe. The first double pipe is rotatably connected to the second double pipe. The first double pipe includes a first inner pipe and a first outer pipe. The second double pipe includes a second inner pipe and a second outer pipe. The first and second inner pipes communicate with each other to form an inner passage. The first and second outer pipes communicate with each other to form an outer passage.

Power generating apparatus of renewable energy type

A wind turbine generator includes a hydraulic pump rotatable by a main shaft, a hydraulic motor connected to a generator, and a high pressure oil line and a low pressure oil line which are arranged between a hydraulic pump and a hydraulic motor. An operation mode selection unit switches an operation mode between a normal operation mode and a low rotation speed operation mode depending on environment conditions. The low rotation speed operation mode has a rated rotation speed of the main shaft lower than that of the normal operation mode, at least one of a rated displacement of the hydraulic pump and a rated pressure of the high pressure oil line that are greater than that of the normal operation mode and a rated output of a generator substantially same as that of the normal operation mode.

Wind turbine generator with a control unit for controlling a rotation speed of a main shaft

An object of the present invention is to provide a wind turbine generator and a tidal current generator equipped with a hydraulic transmission with a combination of a hydraulic pump and a hydraulic motor and which has a superior productivity and maintainability. The wind turbine generatorhas the hydraulic transmissionfor transmitting the rotation energy of a main shaftto a generator. The hydraulic transmissionincludes a hydraulic pumpof variable displacement type which is driven by the main shaft, a hydraulic motorof variable displacement type which is connected to the generator, and a high pressure oil line and a low pressure oil line which are arranged between the hydraulic pumpand the hydraulic motor. The hydraulic transmissionis at least partially constituted of a plurality of modules (Mto M).

Wind turbine generator and tidal current generator with a hydraulic transmission

An apparatus and a method for operating a wind turbine capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the blades in the slanting direction in the event of power failure when strong wind blows, are provided. The operating method of a wind turbine having a supportstanding erect on the ground or on a ship; a wind turbineA with a nacellesupported for swivel movement in a horizontal plane, a rotorhaving a plurality of bladesand being rotated by wind force acting on the blades, and a generator being contained in the nacelle and connected to the rotor; a rotation driving mechanismfor swiveling the wind turbineA; and a brake device for controlling the rotation of the wind turbine comprises the step of:

Wind turbine operating apparatus and operating method

It is intended to provide a power generating apparatus of renewable energy type that has a fixation structure of the hydraulic pump that can transmit large torque and can be processed with ease and at low cost even when the main shaft has a large diameter, as well as a method of installing such hydraulic pump. In the power generating apparatus, a connecting memberis provided on the outer periphery of a main shaftto engage with a cylindrical memberprovided on the outer periphery of the main shaft. The connecting memberincludes a fixing part, a first spline partand first pins. The fixing partis fixed to the outer periphery of the main shaftby means of the first pinsdisposed along a circumferential direction of the main shaft. The first spline partextending at other end of the fixing parton a rear-end side, has a clearance S between the outer periphery of the main shaftand the first spline partand first spline teethformed on an inner periphery facing the clearance S. The clearance S opens at the end of the fixing parton the rear-end side.

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

A structure of an upwind type wind turbine and the operating method thereof capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the blades in the slanting direction in the event of power failure when strong wind blows, are provided. In the upwind type wind turbine having a nacelle supported for rotation on a support, the nacelle is rotated to a downwind position by rotating it by 180&#xb0; from a normal upwind position and kept in stand-by condition at a downwind position when detected wind speed is higher than the predetermined cutout wind speed, which is the reference wind speed for shifting to an idle operation state. When the detected wind speed is higher than the DWSS wind speed determined based on the maximum permissible instantaneous wind speed, the nacelle is rotated from an upwind position to a downwind position and the yaw brake is released.

Up-wind type windmill and operating method therefor

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Tokyo, Japan

Kazuhisa Tsutsumi