[1] Huang Xueliang*, Hu Minqiang,. Study on Electromagnetic Force and Vibration ofTurbogenerator End Windings under Impact Load(Ⅰ):Analysis of Electromagnetic Force of End Windings under Impact Load [J]. Journal of Southeast University (English Edition), 2002, 18 (1): 59-63. [doi:10.3969/j.issn.1003-7985.2002.01.011]

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Study on Electromagnetic Force and Vibration ofTurbogenerator End Windings under Impact Load(Ⅰ):Analysis of Electromagnetic Force of End Windings under Impact Load()

冲击负荷下汽轮发电机端部绕组电动力及其 振动问题的研究(Ⅰ):端部绕组电动力分析

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

18

Issue:

2002 1

Page:

59-63

Research Field:

Electrical Engineering

Publishing date:

2002-03-30

Info

Title:

Study on Electromagnetic Force and Vibration ofTurbogenerator End Windings under Impact Load(Ⅰ):Analysis of Electromagnetic Force of End Windings under Impact Load

冲击负荷下汽轮发电机端部绕组电动力及其 振动问题的研究(Ⅰ):端部绕组电动力分析

Author(s):

Huang Xueliang^*;  Hu Minqiang

Department of Electrical Engineering, Southeast University, Nanjing 210096, China

黄学良;  胡敏强

东南大学电气工程系, 南京 210096

Keywords:

turbogenerator;  transient eddy current field;  impact load;  electromagnetic force;  electromagnetic vibration

汽轮发电机;  瞬态涡流场;  冲击负荷;  电动力;  电磁振动

PACS:

TM311

DOI:

10.3969/j.issn.1003-7985.2002.01.011

Abstract:

In this paper, the boundary value problem(BVP)of 3-D transient eddy current field in the end region in the case that the generator is affected by impact load is specified. Besides, ways to implement discrete methods in both time domain and space domain during the solution of the problem are investigated. The Crank-Nicolson scheme is utilized to attain the iterative format of time differential, after taking factors that can ensure both computation precision and stability into consideration. In this paper, the magnetic distribution in the end region of a turbogenerator in the case that the generator is affected by impact load is specified. As a result, it provides foundation for further study of electromagnetic force and electromagnetic vibration in the end region of the turbogenerator.

本文给出了冲击负荷下发电机端部三维瞬态涡流场的边值问题, 并阐述了求解该问题时在空间、时间上的离散方法.在综合考虑计算精度和计算稳定性两方面因素的基础上, 运用Crank-Nicolson方法得到了时间差分的迭代格式.在此基础上, 详细分析了冲击负荷下汽轮发电机的端部电磁场.本文的研究为进一步分析发电机端部绕组电动力及电磁振动提供了依据.

References:

[1] Zhou Keding. Numerical calculation theory and application of engineering electromagnetic field[M]. Beijing: High Education Press, 1994.(in Chinese)
[2] Huang Xueliang. Research on the eddy current electromagnetic field in the end region of turbogenerator and on factors which affects the field[J]. Transactions of China Electrotechnical Society, 1996, 11(2):1-6.(in Chinese)
[3] Lavers J D. Electromagnetic field computation in power engineering[J]. IEEE Trans on MAG, 1993, 29(6):2347-2352.
[4] Zhou E. Solution of 3D eddy current electromagnetic fields and losses in the end region of turbogenerator[A]. In: Chen Yongxiao ed. Proceedings of the 2nd Chinese International Conference on Electrical Machines[C]. Beijing: International Academic Press, 1995.674-677.
[5] Hu Minqiang. Analysis of the complex variational problem of low frequency electromagnetic field[J]. Transactions of China Electrotechnical Society, 1998, 13(3):27-29.(in Chinese)
[6] Celozz1 S, Feliziani M. Time domain finite element simulation of conductive regions[J]. IEEE Trans on MAG, 1993, 29(2):1705-1710.

Memo

Memo:

* Born in 1969, male, associate professor.

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