基于Ansys workbench的双馈发电机滑环室通风系统分析

Ventilation system analysis of doubly-fed induction generator slip ring chamber for wind power based on ansys workbench

针对双馈发电机在风电机组运行过程中多次出现的滑环故障问题,将计算流体力学(CFD)技术应用到双馈发电机滑环系统分析中。开展了双馈发电机滑环室风路分析,建立了滑环室进出风口与通风情况的关系,提出了使用ANSYS workbench进行滑环室风路流体分析的方法;在获得最佳风路的基础上,使用ANSYS CFX软件对其滑环散热效果进行了评价,并将出口风速、温度仿真分析结果与实际情况进行了对比。研究结果表明,出口风速仿真值与测试值间最大偏差别为4.1%,温度仿真值与测试值间最大偏差别为4.67%,离心风扇式滑环系统较轴流风扇式滑环系统相比在滑环室碳粉清除与滑环散热效果更好。

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 doublyfed 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.