风力发电机热电耦合控制问题研究  

Thermal and Electrical Coupled Control of Wind Power Generator

作　　者：李义强[1] 张兴[1] 

机构地区：[1]清华大学工程力学系热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2012年第9期1571-1574,共4页Journal of Engineering Thermophysics

基　　金：国家高技术研发计划(863计划)(No.2007AA05Z426)

摘　　要：制约高风速段风能利用效率的主要因素之一是发电机的功率容量。本文首次提出从热电耦合控制角度提高电机的单机功率容量,分析了电机控制方法对传热过程的影响,建立了热电耦合控制模型并进行了相关数值计算。提出将(火积)耗散极值原理和对流传热优化的场协同理论用于电机的传热优化,并探讨该方法对最高温度点的影响。The bounded power capacity is one of the main constrained factors for generator to achieve higher wind energy utilization. In this paper, the improvement of the power capacity is firstly proposed through thermal and electrical coupled control. The coupled model is built. Based on this model, a steady state temperature field of a permanent magnet synchronous generator is obtained by numerical computation. As for heat transfer enhancement, an approach of combining entransy dissipation extreme principle and convection uniformity principle is suggested. The affect of the highest temperature point is also analyzed.

关 键 词：风力发电 耦合控制 传热优化 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]