Numerical Analysis of Cooling Air Flow Characteristic for Double Stator Cage-Barrier Rotor Brushless Doubly-Fed Generator

被引：0
作者：
Jiang X. [1 ]
Zhang F. [1 ]
Zhou D. [2 ]
Kong L. [3 ]
机构：
[1] School of Electrical Engineering, Shenyang University of Technology, Shenyang
[2] Shenzhen Hopewind Electric Co. Ltd, Shenzhen
[3] Xi'an DunAn Electric Co. Ltd, Xi'an
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 03期
关键词：
Double stator cage-barrier rotor brushless doubly-fed generator; Finite volume method; Fluid flow characteristic; Mechanical structure; Ventilation structure;
D O I：
10.19595/j.cnki.1000-6753.tces.180184
中图分类号：
学科分类号：
摘要：
Double stator cage-barrier rotor brushless doubly-fed generator (DSCBR-BDFG) has unique advantages of strong magnetic coupling ability, high power density and good fault-tolerant performance because of using back-to-back cage-barrier rotor and double stator structure. The local temperature rise of this type of generator is higher at the rated operation due to poor heat dissipation and complicated structure. Therefore, it is significant to research the cooling air flow characteristics in the ventilating structure for cooling system optimization design. The mechanical structure, winding connection mode and excitation control system of a 50 kW DSCBR-BDFG prototype are expatiated. 3-D physical model including the internal and external fluid regions and mathematical model are established respectively. Then a few basic assumptions and boundary conditions are given and the turbulence control equations are solved numerically by finite volume method based on the fluid mechanics theory. The spatial distribution characteristics about the air velocity, fluid flow and path line are analyzed in detail. The research shows the distribution rules of internal cooling medium rheological properties of DSCBR-BDFG. It provides the basis to optimize the ventilated cooling structure subsequently. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：466 / 473
页数：7
相关论文
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