Ventilation system analysis of doublyfed induction generator slip ring chamber for wind power based on ansys workbench
WEN Bin, LI Shuqiang, TONG Shiwei, CHENG Linzhi , SHU Fengyu
(Xuchang XJ Wind Power Technology Co.,Ltd, Xuchang 461000, China)
 

Abstract: Aiming at the frequent slip ring problems of doublefed induction generator in the process of operating wind turbine generator, the computational fluid dynamics (CFD) analysis technology was applied to the analysis of the doublefed generator slip ring system. In doublyfed generator slip ring chamber wind path analysis, the relationship between slip ring chamber into the outlet and ventilation conditions were builted, put forward of the methods of using ANSYS workbench for slip ring chamber fluid wind path analyses. On the basis of the best wind road provided ANSYS CFX software were used to determine the slip ring heat dissipation effect, and the export wind speed, temperature simulation results were compared with the actual situation. The results show that the export wind speed maximum deviation between the simulation value and test value is 4.1% , the temperature maximum deviation between the simulation value and test value is 4.67%, centrifugal fan type slip ring system is compared to the axial flow fan type slip ring system in cleaning up the slip ring chamber carbon powder and the effect of the slip ring heat dispelling, centrifugal fan type slip ring system is better.
Key words: doublyfed induction generator; slip ring chamber; centrifugal fan type; axial flow fan type; ventilation system; heat dissipation