Völkl Siebenson Patentanwälte - Partnerschaft mbB

The invention concerns a wind turbine rotor blade (110) comprising a half shell (134) with a spar cap (138) and a first shear web (140), wherein- the first shear web (140) is connected to the spar cap (138), which extends in a spanwise direction (120) of the wind turbine rotor blade (110) and has a center line (121),- the first shear web (140) has a first portion (140a) starting in a rotor blade root portion (114), and a subsequent second portion (140b),- the first portion (140a) is orientated at an angle (α) to the center line (121) such that - starting from the rotor blade root end (126) - a distance (154) of the first shear web (140) to the center line (121) of the spar cap (138) decreases along the first portion (140a).

Method of manufacturing a half shell of a wind turbine rotor blade (110), the method comprising the following steps: a) providing a mold for the half shell, b) placing a fiber layer into the mold, c) placing a stack of prefabricated pultruded planks and a core element on top of the fiber layer, wherein the core element has an end face, said end face having at least two projections being integrally formed with the core element, and the core element is arranged with the end face on a lateral side of the stack in such a way that by means of the at least two projections a gap is formed between the core element and the stack, and d) supplying resin into the mold during a vacuum infusion process.

The method is for operating an energy storage system (200) which comprises an energy storage device (240) having a serial connection of energy storage cells (242). The energy storage system further comprises a plurality of contact points (244, 246, 248) across the serial connection for measuring a parameter (P) as well as a charging circuit (214) for charging the energy storage device. The method comprises a step of providing first information (I1) which is representative of an outcome of an operation performed on at least one measured value (M) of the parameter across at least one pair of contact points. In a further step, second information (I2) is provided which is representative of an outcome of an operation performed on at least one reference value (D) of the parameter across the at least one pair of contact points. The at least one reference value is the value of the parameter expected when the energy storage device is of a predefined type. Third information (I3) is determined depending on the first and the second information. The third information is representative of whether the energy storage system is of the predefined type. In a further step, operating information (OI_1, OI_2, OI_3) for the charging circuit is determined depending on the third information.

The invention concerns a device (200) for trimming a longitudinal edge (138) of a half shell (134) in a root region (114) of a wind turbine rotor blade (110), the half shell (134) being placed in a mould (140), the device (200) comprising- a holding frame (202), the holding frame (202) having a rail (206), a first support means (212) and a second support means (214), and- a trimming tool (208) which is displaceably guided on the rail (206) of the holding frame (202),wherein- the holding frame (202) is designed in such a way that it extends over the longitudinal edge (138) for trimming,- the first support means (212) is designed to support the holding frame (202) outside the half shell (134) on the mould (140), and- the second support means (214) is designed to support the holding frame (202) on the half shell (134) inside the mould (140) .The invention also concerns a system (300).

A wind turbine rotor blade comprising a blade root, a blade tip, a leading edge, a trailing edge, a suction side, a pressure side (22) and a heatable surface area including at least one electrical heating element, wherein the heatable surface area covers a section of the leading edge and has a first edge facing the blade tip, a second edge facing the blade root, a third edge arranged on the suction side and a fourth edge arranged on the pressure side (22), characterized in that the wind turbine rotor blade comprises a first layer of an electrically insulating material, wherein the first layer is smaller than the heatable surface area and is arranged on top of the at least one electrical heating element along the leading edge and such that it extends beyond the first edge.

The invention concerns a wind turbine (100), comprising- a rotor hub (112) with a spinner (118), wherein the spinner (118) comprises a blade opening (124),- a wind turbine rotor blade (110) which is inserted with its root portion (114) into the blade opening (124) and connected to the rotor hub (112),- a rain deflector (200), the rain deflector (200) being arranged on an outer surface (130) of the wind turbine rotor blade (110) such that it surrounds the root portion (114) of the wind turbine rotor blade (110),- an intermediate cover (300), which is configured to be arranged in a circumferential gap (126) between the spinner (118) and the rain deflector (200) in order to seal the circumferential gap (126) between the spinner (118) and the rain deflector (200) such that both the rain deflector (200) and the intermediate cover (300) prevent water from entering the rotor hub (112).The invention also relates to an intermediate cover (300).

A method for operating a wind turbine (100) is specified, wherein the wind turbine has a rotor (10) with at least one rotor blade (1, 2, 3). The wind turbine is operable in a safety operation mode which is configured to slow down the rotation of the rotor. In the method, first information (I1) is representative of the operation mode in which the wind turbine is to be operated. The method comprises a step in which it is determined whether a first condition (C1) is fulfilled. The first condition comprises that a failure appears in the wind turbine during rotation of the rotor. If the first condition is fulfilled, second information (I2) is provided which is representative of the actual rotational speed of the rotor. Furthermore, third information (I3) is provided which is representative of the maximum allowable rotational speed of the rotor. Moreover, it is determined whether a second condition (C2) is fulfilled depending on the second and the third information. The second condition comprises that the actual rotational speed is at most the maximum allowable rotational speed. If the second condition is fulfilled, the first information is determined to be representative of the safety operation mode.Furthermore, a computer, a computer program, a computer-readable data carrier, a control device and a wind turbine are specified.

The invention concerns a rain deflector (200) for a wind turbine rotor blade (110). The rain deflector (200) comprises a strand profile (202) formed as one piece. The strand profile (202) is made from an elastomer material. The rain deflector (200) is configured to be placed on an outer surface (130) of the wind turbine rotor blade (110) such that the strand profile (202) surrounds a root portion (114) of the wind turbine rotor blade (110). The invention also relates to a wind turbine rotor blade (110) .

A method of manufacturing a wind turbine rotor blade comprising the following steps:a) providing a wind turbine rotor blade having a first electrical supply line and a second electrical supply line,b) providing a set of heating elements,c) arranging one of the heating elements on the wind turbine rotor blade and connecting this heating element to the first electrical supply line and to the second electrical supply line,d) measuring an electrical resistance between the first electrical supply line and the second electrical supply line and comparing the measured electrical resistance to an expected electrical resistance of a parallel connection of all heating elements already connected to the first electrical supply line and to the second electrical supply line,e) if the measured electrical resistance corresponds to the expected electrical resistance, completing the steps c) and d) for another one of the electrical heating elements of the set of heating elements until all heating elements are connected.

The invention concerns a tool (200) for handling and positioning a root component (300) at a root portion (114) of a wind turbine rotor blade (1) in order to mount the root component (300) at the root portion (114), the tool (200) comprising- a mounting portion (202) configured such that the root component (300) can be releasably connected to the mounting portion (202),- means (206) for connecting the tool (200) to a crane in order to move and position the tool (200) with the help of the crane and/or- means (208) for receiving the fork of a fork lifter in order to move and position the tool (200) with the help of the fork lifter.The invention further concerns a method for handling and positioning a root component (300) at a root portion (114) of a wind turbine rotor blade (110) in order to mount the root component (300) at the root portion (114).