Piller Gmbh

Rwe Piller Gmbh

Hilmar Darrelmann

Norbert Ueffing

Uwe Schrader-Hausmann

Ralf Briest

Klaus Sachs

Reinhard Engelhardt

Armin Klauenberg

Bernd Rosebrock

Detlev Seidel

A wind power station comprises a wind rotor; a transmission mechanically coupled to the wind rotor; an asynchronous generator having a generator rotor mechanically coupled to the transmission, and a generator stator electrically coupled to a power grid; and a protection unit protecting the generator and the transmission against accidental breakdowns of an alternating voltage provided by the power grid. The Protection unit includes at least one choke electrically arranged between the power grid and the generator stator, and a synchronous electrical machine electrically coupled to the choke.

Protection for wind power station

An uninterruptible power supply (UPS) system ( ) is to be inserted between a alternating current (AC) power supply ( ), interruptions of which are to be compensated for, and at least one load ( ), which is to be supplied with alternating current (AC) or direct current (DC). The system comprises a housing ( ); at least one electrical or electronic component ( ), located within the housing ( ), electric energy being partially transformed into heat energy upon a power current flowing through said electrical or electronic component ( ); cooling air transport means ( ) for sucking cooling air ( ) into the housing ( ), for circulating the cooling air ( ) within the housing ( ) and for blowing the cooling air ( ) out of said housing ( ) to remove the heat energy; a passive heat exchanger ( ) for withdrawing the heat energy from the cooling air ( ) being blown out of said housing ( ) and for transferring the heat energy into another cooling medium; and control means ( ) switching the UPS system ( ) from a first operation mode into a second operation mode, when a temperature sensor ( ) at the heat exchanger ( ) detects a temperature which is above a predetermined threshold value. In the first operation mode of the UPS system ( ), the cooling air ( ) blown out of said housing ( ) enters said passive heat exchanger ( ), and is then sucked out of the heat exchanger back ( ) into the housing ( ); said housing ( ), said heat exchanger ( ) and any pipes ( ) inserted there between being sealed against the surroundings ( ) in the first operation mode. And in the second operation mode of the UPS system ( ) the cooling air ( ) is blown out of the housing ( ) into the surroundings ( ) of the housing ( ) and then being sucked out of the surroundings ( ) of the housing ( ) back into the housing ( ). According to the invention said housing ( ) and said heat exchanger ( ) are located within an inner room ( ) of a building, the surroundings ( ) of the housing ( ) being limited to the volume of the inner room ( ), and said heat exchanger ( ) is connected to a standard heat removal system of the building ( ).

Uninterruptible power supply (UPS) system with primary air cooling

In order to provide a system for stabilizing a power supply system comprising a choke, which connects the power supply system to a mains power feed, a converter system connected to the power supply system and having a converter machine with a rotor and at least one three-phase winding, which is in a position to stabilize the voltage in the power supply system to a specific value it is suggested that the converter system comprise a flywheel storage means with a synchronous machine and a flywheel coupled thereto, that the converter system have a static converter system, with which the flywheel storage means can be coupled to the converter machine such that the flywheel storage means can draw power from the converter machine or supply power to it, and that a control be provided which detects the voltage of the power supply system and controls the static converter system such that the converter machine stabilizes the voltage of the power supply system to a predeterminable value by drawing or supplying power.

System for stabilizing a power supply system

Growing community of inventors

Osterode, Germany

Hilmar Darrelmann