Emergency Adjustment Device for Blade Pitch Adjustment Systems for Wind Energy Installations

An adjusting device for rotor blades of a wind power plant is disclosed. An AC motor is provided for adjusting the angle setting of the rotor blades. An input serves for receiving an input alternating current. A frequency converter is provided for generating a second alternating current having a sec...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BECKER STEPHAN, SPATZ BERND
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION HEATING INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THANNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS,TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTIONPRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	An adjusting device for rotor blades of a wind power plant is disclosed. An AC motor is provided for adjusting the angle setting of the rotor blades. An input serves for receiving an input alternating current. A frequency converter is provided for generating a second alternating current having a second frequency, wherein the second alternating current drives the AC motor. Additionally, a DC voltage source and an inverter are provided for converting the voltage provided by the DC voltage source into an alternating current for the AC motor. The inverter is thereby separated from the frequency inverter.