Abstract: A method of protecting a wind turbine comprising including a monitoring device is provided, the method including (a) receiving a trigger signal from the monitoring device, the trigger signal indicating that a protective measure is to be applied, (b) starting a countdown for a predetermined countdown period and initiating a trigger signal evaluation process, (c) if the trigger signal evaluation process determines that the trigger signal is invalid before the countdown ends: ignoring the received trigger signal, and (d) if the countdown ends: apply the protective measure indicated by the trigger signal.

Abstract: A method is proposed for operating at least one wind turbine of a wind farm including determining wind turbine individual offset information based on reactive power provided by the respective wind turbine and reactive power provided by at least one further wind turbine of the wind farm, determining wind turbine individual control information based on the wind turbine individual offset information and wind farm specific control information, operating the at least one wind turbine according to the wind turbine individual control information. Further, a controller and a device as well as a computer program product and a computer readable medium are also provided.

Abstract: A method is proposed for operating at least one wind turbine of a wind farm including determining wind turbine individual offset information based on reactive power provided by the respective wind turbine and reactive power provided by at least one further wind turbine of the wind farm, determining wind turbine individual control information based on the wind turbine individual offset information and wind farm specific control information, operating the at least one wind turbine according to the wind turbine individual control information. Further, a controller and a device as well as a computer program product and a computer readable medium are also provided.

Abstract: The present invention relates to a microphone test stand comprising a slide assembly with a microphone holder surrounded by a first acoustic sealing member. The slide assembly is movable in a first direction between a first position outside an acoustical chamber with an exposed state of the microphone holder and a second position inside the acoustical chamber in a shielded state of the microphone holder. An electrical connector comprises a set of electrical connector terminals which is connectable to a set of microphone terminals for receipt of a microphone response signal from a microphone assembly arranged in the microphone holder in response to a test sound pressure in the acoustical chamber.

Abstract: A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal from a real-time communication system is used as synchronization means for the switches in the power stacks. One or more controllers controlling the switching times of the switches in one or more power stacks may be connected directly to one or more real-time communication buses of the real-time communication system, using the distributed clock signal for synchronization of pulses when using the one or more power stacks for pulse-width modulation of a desired AC output voltage. Furthermore, a power converter comprising such a control system and a wind turbine comprising such a power converter are disclosed.

Abstract: A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal from a real-time communication system is used as synchronization means for the switches in the power stacks. One or more controllers controlling the switching times of the switches in one or more power stacks may be connected directly to one or more real-time communication buses of the real-time communication system, using the distributed clock signal for synchronization of pulses when using the one or more power stacks for pulse-width modulation of a desired AC output voltage. Furthermore, a power converter comprising such a control system and a wind turbine comprising such a power converter are disclosed.

Abstract: A control system for a wind turbine or a wind power park is disclosed, comprising a plurality of control stations arranged in a hierarchical master/slave configuration using a real-time communication system, each comprising a generic control unit in the form of a fully equipped computer module and a generic power module, one of which is arranged to act as a gateway or interface for communication with other control stations one level higher or one level lower in the control station hierarchy, wherein one or more of the control stations further may comprise a dedicated control unit adapted to a specifically assigned control task and/or one or more I/O unit configured to receive inputs from and generate outputs to parts of the wind turbine outside the control system. Furthermore, a wind turbine and a wind power park comprising such a control system are disclosed.

Abstract: The present invention relates to a microphone test stand comprising a slide assembly with a microphone holder surrounded by a first acoustic sealing member. The slide assembly is movable in a first direction between a first position outside an acoustical chamber with an exposed state of the microphone holder and a second position inside the acoustical chamber in a shielded state of the microphone holder. An electrical connector comprises a set of electrical connector terminals which is connectable to a set of microphone terminals for receipt of a microphone response signal from a microphone assembly arranged in the microphone holder in response to a test sound pressure in the acoustical chamber.