Investigation of Fluid Field and Thermal Field Coupled for Permanent Magnet Wind Generator
Ding Shuye1, Sun Zhaoqiong2
1. Harbin University of Science and Technology Harbin 150080 China 2.China Electronics Technology Group Corporation NO.21 Research Institute Shanghai; 200233 China
Abstract：According to ventilation structure and heat transfer characteristics of 2.5MW permanent-magnet wind generator, the 3D physical model of fluid flow and heat transfer coupled is established. And combined with the engineering practice, fundamental assumptions and corresponding boundary conditions are given. On the basis of computational fluid dynamics(CFD) and heat transfer theory, the mathematical equations are given. And fluid-flow and thermal field is calculated using finite volume method(FVM). And the correctness of calculation result of coupled field is verified by comparing with test value. At last, temperature rise distribution of generator and the cooling performance of fluid flow are analyzed in detail, by which a theory gist for calculation of temperature rise and design of ventilation structure for the larger capacity permanent-magnet wind generator is provided.
丁树业, 孙兆琼. 永磁风力发电机流场与温度场耦合分析[J]. 电工技术学报, 2012, 27(11): 118-124.
Ding Shuye, Sun Zhaoqiong. Investigation of Fluid Field and Thermal Field Coupled for Permanent Magnet Wind Generator. Transactions of China Electrotechnical Society, 2012, 27(11): 118-124.
[1] 唐任远, 赵清, 周挺. 稀土永磁电机正进入大发展时期[J]. 沈阳工业大学学报, 2011, 33(1): 1-8. Tang Ren-yuan, Zhao Qing, Zhou Ting. Rare earth permanent magnet electrical machines stepping a new period of rapid development[J]. Journal of Shenyang University of Technology, 2011, 33(1): 1-8. [2] 程明, 张运乾, 张建忠. 风力发电机发展现状及研究进展[J]. 电力科学与技术学报, 2009, 24(3): 2-9. Cheng Ming, Zhang Yunqian, Zhang Jianzhong. Development and research progress of wind power generator[J]. Journal of Electrical Power Science and Technology, 2009, 24(3): 2-9. [3] Han Wook Cho, Seok Myeong Jang, Jang Yong Choi. Analysis of static characteristics in slotless-type permanent magnet machines based on the concept of transfer relations[J]. IEEE Transactions on Magnetics, 2006, 42(10): 3491-3493. [4] 杨玉波, 王秀和, 丁婷婷, 等. 极弧系数组合优化的永磁电机齿槽转矩削弱方法[J]. 中国电机工程学报, 2007, 27(6): 7-11. Yang Yubo, Wang Xiuhe, Ding Tingting, et al. Analysis of the optimization of the pole arc combination to reduce the cogging torque in pm motors[J]. Proceeding of the CSEE, 2007, 27(6): 7-11. [5] Cvetkovski Goga, Petkovska Lidjia, Gair Sinclair. Dynamic simulation of PM disc motor using Matlab/Simulink coupled with finite element method[C]. 13th European Conference on Power Electronics and Applications, Barcelona, Spain, 2009: 1-10. [6] Aldo Boglietti, Andrea Cavagnino, David Staton. Evolution and modern approaches for thermal analysis of electrical machines[J]. IEEE Transactions on Industrial Electronics, 2009, 56(3): 871-882. [7] Ding Shuye, Sun Zhaoqiong, Deng Lei. Calculation and analysis of fluid flow and heat transfer for large doubly-fed wind generator[C]. 6th International Forum on Strategic Technology, Harbin, China, 2011, 1: 619-623. [8] 丁树业, 孙兆琼, 姜楠, 等. 大功率双馈风力发电机内部流变特性数值仿真[J]. 电机与控制学报, 2011, 15(4): 28-34. Ding Shuye, Sun Zhaoqiong, Jiang Nan, et al. Numerical simulation of rheological properties inside large doubly-fed wind generator[J]. Electric Machines and Control, 2011, 7(14): 53-58. [9] Sarkar D. Use of 3-dimensional finite elements for computation of temperature distribution in the stator of an induction motor[J].IEE Proceeding B, 1991, 138(2):75-86. [10] Milos Bekovic, Anton Hamler. Determination of the heating effect of magnetic fluid in alternating magnetic field[J]. IEEE Transactions on Magnetics, 2010, 46(2): 552-555. [11] 李伟力, 杨雪峰, 顾德宝, 等. 多风路空冷汽轮发电机定子内流体流动与传热耦合计算与分析[J]. 电工技术学报, 2009, 12(24): 24-31. Li Weili, Yang Xuefeng, Gu Debao, et al. Calculation and analysis of fluid flow and heat transfer of air-cooled turbo-generator with multipath ventilation [J]. Transaction of China Electrotechnical Society, 2009, 12(24): 24-31. [12] 丁树业, 孙兆琼, 苗立杰, 等. 大型发电机定子主绝缘温度场数值研究[J]. 电机与控制学报, 2010, 7(14): 53-58. Ding Shuye, Sun Zhaoqiong, Miao Lijie, et al. Numerical investigation of stator main insulation temperature field for large generator[J]. Electric Machines and Control, 2010, 7(14): 53-58. [13] 丁树业, 李伟力, 靳慧勇, 等. 发电机内部冷却气流状态对定子温度场的影响[J]. 中国电机工程学报, 2006, 26(3): 131-135. Ding Shuye, Li Weili, Jin Huiyong, et al. Cooling air state inside generator effect on stator temperature fields[J]. Proceeding of the CSEE, 2006, 26(3): 131-135. [14] Ding Shuye, Liu Haoran, Sun Zhaoqiong, et al. Research of fluid flow characteristic inside radial ventilation duct for large generator [C]. Power and Energy Engineering Conference(APPEEC), Chengdu, China, 2010: 1-4. [15] 张奕. 传热学[M]. 南京: 东南大学出版社, 2004. [16] 章本照, 印建安, 张宏基. 流体力学数值方法[M]. 北京: 机械工业出版社, 2003. [17] AИ鲍里先科, BГ丹科. 电机中的空气动力学与热传递[M]. 魏书慈, 邱建甫译. 北京: 机械工业出版社, 1985. [18] 魏永田, 孟大伟, 温嘉斌. 电机内热交换[M]. 北京: 机械工业出版社, 1998.
2012, Vol. 27 
