Abstract: Disclosed is a method of monitoring relative blade pitch angle alignment of a set of at least two rotor blades in a rotary device. The rotary device may be a wind turbine generator. Also disclosed are operational schemes based on the observed relative blade pitch angle alignments.

Abstract: Examples include a structure adapted for monitoring electric charge characteristics of the structure, where the wind turbine generator includes an electric charge monitoring system including one or more electrostatic sensors adapted for measuring polarity, the one or more electrostatic sensors being configured for measuring an electrostatic potential of one or more parts or at locations of the structure, where sensory data from the electrostatic sensors are time-stamped and time-synchronised, and the electric charge monitoring system is configured for monitoring charge characteristics at the one or more parts or locations of the structure.

Abstract: Disclosed is a method of establishing a wake management of a wind farm. The method comprises acts of monitoring one or more wake conditions using one or more sensors from one or more wind turbine generators (WTGs); and establishing a wake management of the wind farm as a function of the wake conditions. Disclosed is also a method of optimising operation of a wind turbine park based on wake management and a system for generating wake management.

Abstract: The disclosure includes a method of diagnosing a grounding system of a structure that includes a charge collecting structure conductively connected to the ground via a grounding path, where diagnosing involves an act of monitoring output of a voltage and/or a current and/or an electrostatic detector connected to the grounding path.

Abstract: A method for repairing a wind turbine tower foundation, wherein the method comprises steps of providing a hardening liquid comprising functionalized graphene, wherein the hardening liquid has density above water or salt water; introducing the hardening liquid to the wind turbine tower foundation, thereby displacing the water or salt water due to higher density of the hardening liquid; hardening the hardening liquid by resistive heating.

Abstract: Examples include a structure adapted for monitoring electric charge characteristics of the structure, where the wind turbine generator includes an electric charge monitoring system including one or more electrostatic sensors adapted for measuring polarity, the one or more electrostatic sensors being configured for measuring an electrostatic potential of one or more parts or at locations of the structure, where sensory data from the electrostatic sensors are time-stamped and time-synchronised, and the electric charge monitoring system is configured for monitoring charge characteristics at the one or more parts or locations of the structure.

Abstract: Disclosed is a method of visually inspecting a wind turbine generator (WTG) and parts thereof during operation. The method comprising acts of pointing a visual inspection system with a field of view about a line of sight in a plane of rotor blade of the wind turbine generator (WTG); of capturing multiple images of the field of view using the visual inspection system; of selecting at least one reference image amongst the captured images or from elsewhere; of comparing the at least one other captured image with the at least one reference image; and thus inspecting structural aspects of the wind turbine generator (WTG) as a function of the result of the act of comparing.

Abstract: Disclosed is a method of condition monitoring a WTG (Wind Turbine Generator) comprising acts of collecting and storage of at least the following data sets together with their time stamps. Collection of generator power production measurements. Collection of mechanical status measurements. Collection of generator torque measurements. Collection of nacelle direction measurements. Collection of meteorological conditions measurements. The method compromises a further act of synchronizing the data sets. The invention also relates to a system for condition monitoring a WTG. The invention further relates to a system for visually inspecting a WTG.

Abstract: The present invention relates to a wind turbine blade with a blade structure comprising a surface and a load-carrying spar supporting a shell structure, wherein the blade structure comprises functionalized graphene-containing material. The present invention relates to a wind turbine concrete tower comprising a load-carrying structure extending vertically to a height, comprising functionalized graphene-containing material. The invention further relates to use of functionalized graphene-containing material in wind turbine parts. The invention further relates to a method for retrofitting a blade structure and the use of functionalized graphene-containing material in a repair system for wind turbine tower foundations. Furthermore the invention relates to use of at least one sensor containing graphene.

Abstract: Disclosed is a method of detecting abnormal conditions, e.g. of a blade or a rotor, on a wind turbine generator. Also disclosed is a system for detecting abnormal conditions, e.g. of a blade or rotor on a wind turbine generator.

Abstract: Disclosed is a method of monitoring relative blade pitch angle alignment of a set of at least two rotor blades in a rotary device. The rotary device may be a wind turbine generator. Also disclosed are operational schemes based on the observed relative blade pitch angle alignments.

Abstract: Aspects of the present disclosure are directed to hybrid energy harvesting systems and methods related thereto. In one example embodiment of the present disclosure, a hybrid energy harvesting unit is disclosed including a guiding structure that provides a constrained trajectory, and one or more coils with a coil length arranged along the guiding structure. Each of the one or more coils encircle a part of the constrained trajectory. The hybrid energy harvesting unit further includes a cantilever structure with an anchoring end and a cantilever tip having a magnetic mass arranged thereon, a piezoelectric element arranged in the cantilever structure and outside the one or more coils, and a permanent magnet partially arranged in the guiding structure and which moves relative to the guiding structure. The anchoring end and the guiding structure is attached to and separated by a distance to the object in motion at a point of contact.

Abstract: The present invention relates to a wind turbine blade with a blade structure comprising a surface and a load-carrying spar supporting a shell structure, wherein the blade structure comprises functionalized graphene-containing material. The present invention relates to a wind turbine concrete tower comprising a load-carrying structure extending vertically to a height, comprising functionalized graphene-containing material. The invention further relates to use of functionalized graphene-containing material in wind turbine parts. The invention further relates to a method for retrofitting a blade structure and the use of functionalized graphene-containing material in a repair system for wind turbine tower foundations. Furthermore the invention relates to use of at least one sensor containing graphene.

Abstract: Disclosed is a method of condition monitoring a WTG (Wind Turbine Generator) comprising acts of collecting and storage of at least the following data sets together with their time stamps. Collection of generator power production measurements. Collection of mechanical status measurements. Collection of generator torque measurements. Collection of nacelle direction measurements. Collection of meteorological conditions measurements. The method compromises a further act of synchronizing the data sets. The invention also relates to a system for condition monitoring a WTG. The invention further relates to a system for visually inspecting a WTG.

Abstract: Disclosed is a method of condition monitoring a WTG (Wind Turbine Generator) comprising acts of collecting and storage of at least the following data sets together with their time stamps. Collection of generator power production measurements. Collection of mechanical status measurements. Collection of generator torque measurements. Collection of nacelle direction measurements. Collection of meteorological conditions measurements. The method compromises a further act of synchronizing the data sets. The invention also relates to a system for condition monitoring a WTG. The invention further relates to a system for visually inspecting a WTG.

Abstract: Disclosed is a method of condition monitoring a WTG (Wind Turbine Generator) comprising acts of collecting and storage of at least the following data sets together with their time stamps. Collection of generator power production measurements. Collection of mechanical status measurements. Collection of generator torque measurements. Collection of nacelle direction measurements. Collection of meteorological conditions measurements. The method compromises a further act of synchronizing the data sets. The invention also relates to a system for condition monitoring a WTG. The invention further relates to a system for visually inspecting a WTG.