Siemens Aktiengesellschaft

Siemens Gamesa Renewable Energy A/s

Siemens Gamesa Renewable Energy Gmbh & Co. Kg

Thomas Dreyer

Robert Vernon Fulcher

Steffen Wulff

Gerd Limmer

Tobias Siepker

Jerome Koenig

Christoph Nentwig

Farhad Safargholi

Provided is a method of controlling wind turbine converters of wind turbines parallel connected at a point of common coupling, the method including: generating for each converter within a same length of a pulse width modulation period a pulse, wherein the pulses start for different converters at different pulse start phases, wherein pulse start phase differences of the pulse start phases between at least two of adjacent converters are unequal.

Selecting switching times of wind turbine converters

A method is provided for testing a wind turbine installation in respect of riding through a voltage dip. As per the method, a voltage dip is simulated and measured data is obtained on the performance of the wind turbine installation based on the simulated voltage dip. The measured data obtained is analyzed regarding variables defined in performance requirements and their permitted values. The measured data is combined to form a measured dataset in a standardized measured data format. The measured dataset is forwarded to an automatic analysis unit which stores evaluation criteria. The analysis unit performs the tasks of deriving values for the variables defined in the performance requirements from the measured data, comparing the values of the variables with the permitted values contained in the performance requirements, performing an evaluation of the comparison according to the stored evaluation criteria and keeping the result of the evaluation ready for output.

Method and apparatus for testing a wind turbine installation

A method of integrating a machine or installation into an engineering/control system within the facility, such as an automation system, comprises the steps of receiving a definition or specification for applicable standards for communication between the engineering/control system within the facility and the machines or installations; manufacturing or providing a communication interface unit comprising enhanced interfaces to fulfill the definition or specification and adapting the communication interface unit to the definition or specification; providing the communication interface unit to a machine or installation manufacturer for manufacturing the machine or installation; delivering the machine or installation and the communication interface unit to the facility; and integrating the machine or installation equipped with the communication interface unit within the facility.

Interface unit for automation systems and method of providing and installing such an interface

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Achim, Germany

Thomas Dreyer