General Electric Company
WIND POWER GENERATION SYSTEM AND CONTROLLING METHOD THEREOF

Abstract:

The present disclosure provides a wind power generation system, which comprises a wind turbine for generating mechanical energy; a generator for converting the mechanical energy into electrical energy; a converter for converting the electrical energy to expected power for supplying to a grid, wherein a rotor of the generator is connected to converter, an output of a stator of the generator and an output of a converter are both connected to the grid; a controller for controlling the converter to absorb rotor-side reactive power Q.sub.rotor and to increase line-side reactive power Q.sub.line, so as to meet a reactive power demand of the grid, when a rotor speed is less than a predetermined value.