Siemens Aktiengesellschaft

Steffen Wulff

Björn Andresen

Thomas Dreyer

A converter device (for power conversion in e.g. a power plant such as a wind turbine is disclosed. An individual controller is provided for each phase of an electrical output power of the converter. If a voltage of one phase is indicated as being out of a predetermined voltage band, an active current of this phase is set to zero and optionally a reactive component of this phase is set to a value that depends on the indicated voltage.

Converter device and method for converting electrical power

A converter device for power conversion in a power plant, such as a wind turbine, is provided. The converter device is configured for converting an electrical input power to an electrical output power. The converter device may be configured for receiving mechanical input power or, according to another embodiment, may be configured for receiving electrical input power. The converter device includes a voltage input for receiving a voltage signal, which is indicative of a voltage in a electricity network to which the converter device is coupled during operation in order to provide the electrical output power to the electricity network The converter device includes a controller being configured for setting a reactive component of the electrical output power depending on the voltage signal according to a out-of-band reactive current gradient if the voltage indicated by the voltage signal is outside a predetermined voltage band.

Electrical power converting device and method to accommodate voltage variations in electricity networks

A method for operating obstacle or hazard lighting of a wind power plant with a red beacon unit and a white beacon unit is provided. The red beacon unit is operated 24 hours a day and the white beacon unit is switched on and off, depending on the ambient brightness.

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Bremen, Germany

Steffen Wulff