Numerical Simulation on Air Volume Flow Rate Distribution of Stator Ducts for Salient Pole Synchronous Motor

Abstract:

Air volume flow rate distribution of stator ducts along axial and circumferential for salient pole synchronous motor is strongly influenced by the air flow field in the air gap and rotor poles, which is completely different from the flow characteristics of non-salient pole motor and it directly relates to the peak temperature of stator bars and core and axial temperature difference which can affect the safety of the operation. A three-dimensional physical model of 1/8 motor was established and corresponding solution domain boundary conditions were given in this article. The air volume flow rate distribution of stator ducts along axial and circumferential was analyzed based on CFD. The study show that at the same position of the axial stator, the cooling air flow into stator ducts along the circumferential direction is uneven, the air volume flow rate distribution is largely influenced by rotor pole pieces, geometry and position of pole support block and rotor rotation direction.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 373-376
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.373
• Online since: September 2014
• Authors: Li Liu*, Yi Ping Lu, Jia De Han, Xue Mei Sun
• Keywords: 3D Flow Field, Numerical Simulation, Salient Pole Synchronous Motor, Stator Duct

References

[1] F.N. Isaac A.A. Arkadan,A. El-Antably. Magnetic Field and Core Loss Evaluation of ALA-Rotor Syqchronous Reluctance Machines Taking into Account Material Anisotropy [J]. IEEE Transactions on Magnetics, 1998. 34 (5) 3507-3510.

DOI: 10.1109/20.717827

[2] R.E. Mayle,S. Hess,C. Hirsch. Rotor-stator Gap Flow Analysis and Experiments [J]. IEEE Transactions on Energy Conversion, 1998 13 (2) 101-110.

DOI: 10.1109/60.678972

[3] Junqing Li, JiWei Hu. 3D Fluid Field Calculation and Analysis in Stator Radial Ventilation Ducts of Turbogenerators [J]. Large Electric Machine and Hydraulic Turbine, 2010 (1) 19-22.

[4] Yiping Lu, Fan Feng, MingQi Sun and so on. Numerical Calculation and Analysis of Fluid Flow Field of Stator and Air-gap of a Synchronous Machine [J]. Electric Machines and Control, 2011 15 (8) 47-51.

[5] Yiping Lu, CenYu Liu, MengQi Li and so on. 3D Flow Field Numerical Simulation of Some Doubly Synchronous Motor [J]. Electric Machines and Control, 2010 16 (8) 61-66.

[6] WenShuan Tao. Numerical Heat Transfer [M]. Xi'an：Xi'an Jiao Tong University Press, 2001, 347-353.