WIND TURBINE HAVING AN EXPANDED VOLTAGE RANGE

摘要

A wind turbine having a wind rotor, a generator powered therewith for generating electrical energy, and a connecting line for delivering the electrical energy, optionally via a system transformer. The wind turbine includes a voltage expander that expands the voltage range of the wind turbine by means of an auxiliary voltage source. The voltage expander comprises a small transformer of having a primary and a secondary winding, and a switching mechanism. The small transformer is looped into the connecting line with the secondary winding, and the switching mechanism is connected to the primary winding of the small transformer, actuating the primary winding in a switchable multi-stage manner. Thus, a multi-stage expansion of the voltage range of the wind turbine is achieved, wherein due to the arrangement of the small transformer lengthwise in the connecting line, the small transformer can have a fraction of the nominal power of the wind turbine.

主权项

1. A wind turbine comprising a wind rotor, a generator driven thereby for generating electrical energy, a connecting line for outputting the electrical energy, and a voltage expander configured to expand the voltage range of the wind turbine using an additional voltage source, wherein the voltage expander comprises a dedicated small transformer comprising a primary and a secondary winding and a switching mechanism and wherein the small transformer is looped in the connecting line with the secondary winding, and the switching mechanism is connected to the primary winding of the small transformer and actuates said primary winding with the capacity for switchover in multi-tap actuation fashion.