Abstract: The SCD 3.0MW high power double-blades wind-turbine generator(WTG)utilized in Huaran field,cannot meet the designed power on production, moreover,output was affected and frequent shutdown happened in summer for the high temperature of windings. In order to improve the reliability and increase WTG output,we optimized the SCD3.0MW generator,including stator winding optimization and rotator magnet,magnetic yoke optimization. It proves that the optimization has brought the expected results with rated output power increasing by300 to 400 KW and the temperature of windings standing at 80 to90℃,thereby pushes the development of high power double-blades wind-turbine generator.

Key words: generator, power, winding, magnet, magnetic yoke