Siemens Aktiengesellschaft

Siemens Gamesa Renewable Energy A/s

Steffen Frydendal Poulsen

Peder Bay Enevoldsen

Ib Frydendal

Rune Rubak

Anders Vangsgaard Nielsen

Martin Hedegaard Larsen

Martin Hededgaard Larsen

Provided is a method of manufacturing wind turbine rotor blades, wherein each rotor blade includes an inboard section and an outboard section, and wherein an inboard blade section including a root end and a transition region is manufactured using a first casting process; and an outboard blade section including an airfoil region is manufactured using a second casting process, which second casting process is different from the first casting process. The invention further describes a wind turbine rotor blade manufactured using such a method.

Method of manufacturing wind turbine rotor blades

A rotor blade of a wind turbine, wherein the rotor blade includes a first rotor blade segment and a second rotor blade segment is provided. The first rotor blade segment is connected with the second rotor blade segment by at least one bolted joint. The bolted joint includes a first attachment unit, which is attached to the first rotor blade segment, and a second attachment unit, which is attached to the second rotor blade segment. Finally, the bolted joint includes a threaded fastener which connects the first attachment unit with the second attachment unit. Furthermore, the invention is also related to a wind turbine including at least one such rotor blade.

Bolted joint for rotor blade segments

A pitch bearing for a wind turbine rotor comprises a rotor hub and at least one rotor blade, the pitch bearing comprising a cylindrical inner bearing ring connectable to a rotor blade of the wind turbine rotor, a cylindrical outer bearing ring connectable to the rotor hub of the wind turbine rotor and an annular reinforcement section for reinforcing the outer bearing ring. The annular reinforcement section adjoins the cylindrical outer bearing ring at its radial outer surface.

Pitch bearing for wind turbine rotor blades

A method for aligning a wind turbine with the wind direction is provided. The method includes measuring at least one first pressure at a first side of the wind turbine's nacelle, determining the pressure difference between the measured first pressure and a second pressure, and rotating the nacelle in dependence to the determined pressure difference. A wind turbine arrangement including a nacelle, a yaw alignment controller, and a yaw drive is also provided.

Wind turbine arrangement and method for aligning a wind turbine with the wind direction

In one aspect, a method for aligning a component into a wind direction is provided. The component comprises a sensor which is located such that at least part of the sensor is exposed to the wind. A signal is measured based on the force acting on the sensor due to the wind, and the component is rotated depending on the measured signal. Additionally a sensor for determining misalignment of a component relative to a wind direction is provided. The sensor comprises at least one flat element and at least one tool or device for measuring the force acting on the flat element.

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Silkeborg, Denmark

Steffen Frydendal Poulsen