Patent ID: 7692325
Filing Date: 2010-04-06
Classification: F03D,F05B,H02J,H02P,Y02E

Abstract:
1. A wind power generation system comprising: an AC excitation type generator having its stator connected to an electric power system; a converter for AC excitation connected to the rotor of said AC excitation type generator, said rotor of said AC excitation type generator being connected to a turbine so as to be rotated by power of said turbine; overcurrent consumptive means connected between said AC excitation converter and the rotor to consume an overcurrent during a system fault; a system side converter connected to the stator of said AC excitation type generator and to the electric power system; and a controller connected to a DC port of said system side converter and a DC port of said AC excitation converter, said controller being backed up when voltage of said system drops so as to control said excitation converter and said system side converter, said AC excitation type generator being operative to feed generated power to said electric power system, wherein said overcurrent consumptive means includes rectifier means for converting AC to DC; a plurality of resistors connected to a DC port of said rectifier means; switching means for turning on/off said resistors; and a capacitor provided for the DC port of said rectifier means.