Abstract: There is provided methods and systems for controlling a multi-rotor wind turbine generator having at least two rotor nacelle assemblies mounted to a support arrangement by a common yaw control system and each having a wind direction sensor mounted thereto configured to measure a wind direction relative to forward direction of its rotor nacelle assembly. The methods comprise the steps of measuring, for each rotor nacelle assembly, wind power parameter data over a plurality of relative wind directions, determining, based on the measured data, an optimum relative wind direction, either based on the average of two directions at which the parameter is maximum or on a combined data set, and controlling the yaw system accordingly.

Abstract: A pitch actuator for a wind turbine pitch system, the pitch actuator having an actuator rod, a drive end of which is defined by a clevis fork arrangement having first fork member and a second fork member that extend in a direction along a rod axis and terminate at a tip end. The first and second fork members define respective clevis openings for receiving a clevis pin therethrough, said clevis openings each having an opening perimeter profile comprising: a first perimeter section defined by a leading circular arc that is centred on the rod axis and oriented in the direction of the tip end of the fork members, the circular arc defining a nominal radius and a central angle of less than 120 degrees, and second and third flared perimeter sections that flank respective sides of the first perimeter section, each of which define an enlarged clearance zone with respect to at least part of an imaginary circle defined by the nominal radius of the first perimeter section.

Abstract: A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.

Abstract: A mechanism for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline featuring an improved restraint mechanism. The restraint mechanism includes a circumferential casing and a companion grip ring, both of which are received within a mating groove provided in the belled end of a female pipe. The grip ring is made up of a series of arc-shaped gripping elements which are interconnected by discrete elastomeric segments. The gripping elements are separated by gaps so that a flexible hinge region is created by the elastomeric segments between adjacent gripping elements. The elastomeric segments provide both axial and radial spring action to the assembly.

Abstract: Techniques for performing spatial audio processing based on a listening mode of a wearable device are described. An example technique includes detecting a listening mode that is activated on the wearable device. A set of spatial audio processing settings is determined based on the listening mode. The set of spatial audio processing settings is applied to a spatial audio rendering algorithm while audio content is output from the wearable device. Another example technique includes detecting a listening mode of the wearable device that has been activated for listening to audio content. A head-tracking mode of the wearable device is controlled based on the listening mode.

Abstract: A reverse osmosis (1) system having a first membrane unit (2) and at least a second membrane unit (3), the membrane units (2, 3) forming a chain of membrane units, the first membrane unit (2) having a first membrane (4) separating a first feed chamber (5) and a first permeate chamber (6), a first inlet (7) connected to the first feed chamber (5), a first permeate outlet (9) connected to the first permeate chamber (6), and a first concentrate outlet (8) connected to the first feed chamber (5), the second membrane unit (3) having a second membrane (10) separating a second feed chamber (11) and a second permeate chamber (12), a second inlet (13) connected to the second feed chamber (11), a second permeate outlet (15) connected to the second permeate chamber (12), and a second concentrate outlet (14) connected to the second feed chamber (11), wherein the concentrate outlet (8) of a membrane unit (2) in the chain of membrane units is connected to an inlet (13) of a following membrane unit (3) and a concentrate out

Abstract: A load mitigation arrangement of a non-mounted rotor blade, includes at least one actuatable lift-modification device arranged on a surface of the rotor blade; a monitor configured to estimate the magnitudes of loads acting on the non-mounted rotor blade; a controller configured to actuate the lift-modification device on the basis of the estimated magnitudes to mitigate the loads acting on the non-mounted rotor blade. Further provided is a rotor blade assembly, and a method of performing load mitigation on a non-mounted rotor blade.

Abstract: A control network for a wind turbine system, the wind turbine system comprising multiple rotor-nacelle assemblies mounted on a support structure, the control network comprising: a respective local network associated with each rotor-nacelle assembly, each local network comprising multiple nodes; a central network that is connected to each local network, the central network comprising multiple nodes; and a synchronization device that synchronizes data transmission throughout the control network.

Abstract: The present disclosure relates to a process for production of a hydrocarbon fraction from an oxygenate feedstock, comprising the steps of providing a process feed comprising an amount of an ammonia precursor, hydrogen and an amount of oxygenates at a temperature above 200° C., directing said process feed to contact a material catalytically active in hydrodeoxygenation (HDO) under hydrotreating conditions to provide a hydrodeoxygenated intermediate product, wherein said ammonia precursor provides an amount of ammonia corresponding to a partial pressure of NH3 in the presence of said material catalytically active in hydrodeoxygenation being at least 0.1 mbar, This has the associated benefit that the ammonia precursor releases ammonia by thermal reaction, such that the presence of ammonia may limit the extent of formation of high boiling product in the hydrodeoxygenation process.

Abstract: The monitor device includes a processor; memory; a first interface connected to the processor and the memory, the first interface configured for connecting to an ostomy appliance; and a second interface including a transceiver connected to the processor for transmitting monitor data according to a transmission scheme. The second interface is configured for connecting to one or more accessory devices. The processor includes a transmission controller configured to control the transmission scheme, wherein to control the transmission scheme includes applying a primary transmission scheme or a secondary transmission scheme different from the primary transmission scheme.

Abstract: A wind turbine monitoring device for monitoring a wind turbine including a lightning sensor for detecting a lightning strike on a wind turbine blade includes a lightning parameter acquisition part configured to acquire at least one lightning parameter based on an output of the lightning sensor, a lightning level determination part configured to determine a level of the lightning strike based on the at least one lightning parameter acquired by the lightning parameter acquisition part; and an inspection control part configured to judge whether it is necessary to automatically inspect the wind turbine blade by at least one inspection unit for inspecting the wind turbine blade, according the level of the lightning strike determined by the lightning level determination part.

Abstract: The present invention relates to compositions such as cleaning compositions comprising a mix of enzymes. The invention further relates use of compositions comprising such enzymes in cleaning processes.

Abstract: A medical visualisation device including an instrument elevator having a guide surface for engagement with an instrument protruding through a tip part instrument channel and a X-ray transparent housing. The instrument elevator is radiopaque and pivotable around a pivot axis to adjust a guide angle between the guide surface and a longitudinal axis. The pivot axis being substantially perpendicular to the longitudinal axis and a viewing direction. A control wire being coupled to the instrument elevator to transfer a force exerted on the control wire to the instrument elevator to adjust the guide angle.

Abstract: A main laminate for a wind turbine blade, a wind turbine blade, and methods for manufacturing such components are disclosed. The main laminate extends along a longitudinal direction and comprising a connector element comprising a conductive mesh portion and an elongated connector part, wherein a connector part length is longer than an edge distance between the conductive mesh portion and a first edge, and wherein a secondary connector portion of the elongated connector part is bendable around a bend axis substantially parallel to the longitudinal direction.

Abstract: A wind turbine generator nacelle (14) comprises a nacelle frame (44) having a first forward hub end and a second aft end. Dedicated transport fittings (46) are positioned at each of the ends of the nacelle frame (44). The fittings (46) are adapted to be engaged by transport frames (86) on first and second transport trailers (80) for supporting the nacelle frame (44) for transport by the trailers (80). A service platform (20) is mounted to the transport fittings (46) on the aft end of the nacelle frame (44) such that the service platform (20) is cantilevered off of the aft end of the nacelle frame (44).

Abstract: An audio device comprising an interface, memory, and a processor is disclosed. A first microphone input signal and a second microphone input signal is processed for provision of an output audio signal; and output the output audio signal, wherein to process the microphone signals determine a first distractor indicator based on features associated with the input signals; determine a first distractor attenuation parameter based on the first distractor indicator; determine a second distractor indicator based on one or more features associated with the first microphone input signal and the second microphone input signal; determine a second distractor attenuation parameter based on the second distractor indicator; determine an attenuator gain based on the first distractor attenuation parameter and the second gain compensation parameter; and apply a noise suppression scheme to a first beamforming output signal according to the attenuator gain for provision of the output audio signal.

Abstract: A hearing device for placement in a user's ear includes: at least one input transducer, an output transducer, a wireless communication unit and an antenna arrangement adapted for providing a wireless link, and a reference axis, the reference axis being parallel to the user's ear-to-ear axis, when the hearing device is placed in an operable position, wherein in that the antenna arrangement comprises a first antenna configured for transmitting/receiving EM-radiation at a first frequency, the first antenna comprising a first electrically conducting segment extending in a first direction, a second antenna configured for transmitting/receiving EM-radiation at the first frequency, the second antenna comprising a second electrically conducting segment extending in a second direction, the second direction being different from the first direction, a first feed coupling the first antenna to the wireless communication unit, and a second feed coupling the second antenna to the wireless communication unit.

Abstract: A wind turbine blade having at least two blade modules extending in the spanwise direction of the blade and being configured for connection end-to-end at a connection joint An electromagnetic shield is positioned in electrically conductive contact with the blade modules and extending across the connection joint in the spanwise direction.