How wind turbines operate without grid linkage and wind turbines

摘要

The present invention relates to a method of operating a wind turbine, a method of manufacturing a wind turbine, and a wind turbine. The wind turbine includes a power supply stage including a permanent magnet (PM) synchronous generator, a main converter, a main converter controller, a wind turbine master controller, and an electrical energy storage device. The start-up of the wind turbine can be performed using electrical energy from an electrical energy storage device independent of the power supply system and / or the combustion engine. After start-up, the wind turbine can be operated in island mode by controlling the intermediate voltage of the main converter by the main converter controller and recovering power from the PM synchronous generator independent of the electrical energy storage device.