Cooling layout optimization of offshore double-fed wind turbine

LIU Hai-tao, ZHANG Shuang-quan, WANG Hai-long

(Guodian United Power Technology Co. Ltd., Beijing 100039, China)

Abstract: Aiming at the heat loss of the key components as generator increased with the unit capacity of offshore wind turbine continued to increase, and the nacelle must be sealed to prevent salt atmosphere at sea corroding the important parts in the nacelle, more requirements for cooling system design would be met, the relationship of the layout design of some megawatt-class double-fed wind turbine cooling system and the match of cooling system performance was established, the layout design of cooling system was optimized based on the features of the drive train and compact nacelle, Fluent software was applied for analyzing the drag of cooling passage corresponding different layout, the match of cooling system performance corresponding different layout was analyzed and compared based on Multi-Wing fan platform, and the optimum layout was selected. The results show that, the optimized cooling layout can improve the efficiency of cooling system, reduce the power loss of wind turbine. It can be referenced for the cooling system design of offshore wind turbine.