Static eccentricity will cause the abnormal distribution of air gap magnetic field and further affect the electromechanical characteristics of the generator. This paper comparatively studies on the end winding electromagnetic force of turbo generator under different eccentricity ratio and eccentricity angle. The analytical expression of end winding electromagnetic force is derived after eccentricity. Meanwhile, the three-dimensional transient finite element simulation is carried on under several eccentricity cases. Then the amplitude variation characteristics with eccentricity ratio and angle are analyzed. Further, the force characteristics are verified by experimental vibration acceleration of CS-5 simulating generator. It is found that the static eccentricity will not change the frequency components of the end winding force. However, it will change the amplitude of the electromagnetic force, and the increase or decrease tendency depends on the winding position, eccentricity ratio and eccentricity angle. The number of force amplitude increasing coils is close to half of the total number, and it changes slightly with the eccentricity ratio and eccentricity angle. The force increment of coil near the minimum air gap will be larger with the increase of eccentricity ratio, but it is not affected greatly by eccentricity angle. Moreover the coil with the most obvious force increase is located in the interphases position near the minimum air gap.
| Published in |
International Journal of Electrical Components and Energy Conversion (Volume 7, Issue 2)
This article belongs to the Special Issue Electro-Mechanical Coupling Problems in Electric Machines |
| DOI | 10.11648/j.ijecec.20210702.13 |
| Page(s) | 48-53 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Electromagnetic Force, Eccentricity Factors, End Winding, Turbo-generator
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| [4] | Y. He et al. “A New External Search Coil Based Method to Detect Detailed Static Air-Gap Eccentricity Position in Non-Salient Pole Synchronous Generators”, IEEE Transactions on Industrial Electronics, pp. PP (99): 1-1, 2020, doi: 10.1109/TIE.2020.3003635. |
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| [6] | Y. He et al. “Rotor UMP characteristics and vibration properties in synchronous generator due to 3D static air-gap eccentricity faults,” IET Electric Power Applications, vol. 14, no. 6, pp. 961-971, 2020. |
| [7] | Yan Xuechao. “Analysis of Magnetic Field and Calculation of Magnetic Force for Large Turbo-generator with Rotor Eccentricity,” Harbin University of Science and Technology, Harbin, China, 2013 (in Chinese). |
| [8] | Zhang Wenzhan. “Analysis and application of electromagnetic force on turbo-generator rotor and stator”, North China Electric Power University, Hebei, Chian, 2010 (in Chinese). |
| [9] | Liu Fei, Liang Lin, Xu Guanghua, Dong Jiacheng. “A Detection Method of Motor Rotational Eccentricity Using Current Information,” Transactions of China Electrotechnical Society, vol. 29, no. 7, pp. 181-186+208,. 2014 (in Chinese). |
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| [12] | Hong-Chun Jiang, Gui-Ji Tang, Yu-Ling He et al., “Effect of Static Rotor Eccentricity on End Winding Forces and Vibration Wearing,” International Journal of Rotating Machinery, vol. 2021, pp. 1-14, 2021. |
| [13] | Yu-Ling He, Wei-Qi Deng, Bo Peng, etc. “Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit” Shock and Vibration, vol. 2016, pp. 1-14, 2016. |
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APA Style
Hong Chun Jiang, Yu Ling He, Gui Ji Tang. (2021). Effect of Eccentricity Factors on End Winding Electromagnetic Force in Turbo-generator. International Journal of Electrical Components and Energy Conversion, 7(2), 48-53. https://doi.org/10.11648/j.ijecec.20210702.13
ACS Style
Hong Chun Jiang; Yu Ling He; Gui Ji Tang. Effect of Eccentricity Factors on End Winding Electromagnetic Force in Turbo-generator. Int. J. Electr. Compon. Energy Convers. 2021, 7(2), 48-53. doi: 10.11648/j.ijecec.20210702.13
AMA Style
Hong Chun Jiang, Yu Ling He, Gui Ji Tang. Effect of Eccentricity Factors on End Winding Electromagnetic Force in Turbo-generator. Int J Electr Compon Energy Convers. 2021;7(2):48-53. doi: 10.11648/j.ijecec.20210702.13
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Download@article{10.11648/j.ijecec.20210702.13,
author = {Hong Chun Jiang and Yu Ling He and Gui Ji Tang},
title = {Effect of Eccentricity Factors on End Winding Electromagnetic Force in Turbo-generator},
journal = {International Journal of Electrical Components and Energy Conversion},
volume = {7},
number = {2},
pages = {48-53},
doi = {10.11648/j.ijecec.20210702.13},
url = {https://doi.org/10.11648/j.ijecec.20210702.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijecec.20210702.13},
abstract = {Static eccentricity will cause the abnormal distribution of air gap magnetic field and further affect the electromechanical characteristics of the generator. This paper comparatively studies on the end winding electromagnetic force of turbo generator under different eccentricity ratio and eccentricity angle. The analytical expression of end winding electromagnetic force is derived after eccentricity. Meanwhile, the three-dimensional transient finite element simulation is carried on under several eccentricity cases. Then the amplitude variation characteristics with eccentricity ratio and angle are analyzed. Further, the force characteristics are verified by experimental vibration acceleration of CS-5 simulating generator. It is found that the static eccentricity will not change the frequency components of the end winding force. However, it will change the amplitude of the electromagnetic force, and the increase or decrease tendency depends on the winding position, eccentricity ratio and eccentricity angle. The number of force amplitude increasing coils is close to half of the total number, and it changes slightly with the eccentricity ratio and eccentricity angle. The force increment of coil near the minimum air gap will be larger with the increase of eccentricity ratio, but it is not affected greatly by eccentricity angle. Moreover the coil with the most obvious force increase is located in the interphases position near the minimum air gap.},
year = {2021}
}
TY - JOUR T1 - Effect of Eccentricity Factors on End Winding Electromagnetic Force in Turbo-generator AU - Hong Chun Jiang AU - Yu Ling He AU - Gui Ji Tang Y1 - 2021/11/27 PY - 2021 N1 - https://doi.org/10.11648/j.ijecec.20210702.13 DO - 10.11648/j.ijecec.20210702.13 T2 - International Journal of Electrical Components and Energy Conversion JF - International Journal of Electrical Components and Energy Conversion JO - International Journal of Electrical Components and Energy Conversion SP - 48 EP - 53 PB - Science Publishing Group SN - 2469-8059 UR - https://doi.org/10.11648/j.ijecec.20210702.13 AB - Static eccentricity will cause the abnormal distribution of air gap magnetic field and further affect the electromechanical characteristics of the generator. This paper comparatively studies on the end winding electromagnetic force of turbo generator under different eccentricity ratio and eccentricity angle. The analytical expression of end winding electromagnetic force is derived after eccentricity. Meanwhile, the three-dimensional transient finite element simulation is carried on under several eccentricity cases. Then the amplitude variation characteristics with eccentricity ratio and angle are analyzed. Further, the force characteristics are verified by experimental vibration acceleration of CS-5 simulating generator. It is found that the static eccentricity will not change the frequency components of the end winding force. However, it will change the amplitude of the electromagnetic force, and the increase or decrease tendency depends on the winding position, eccentricity ratio and eccentricity angle. The number of force amplitude increasing coils is close to half of the total number, and it changes slightly with the eccentricity ratio and eccentricity angle. The force increment of coil near the minimum air gap will be larger with the increase of eccentricity ratio, but it is not affected greatly by eccentricity angle. Moreover the coil with the most obvious force increase is located in the interphases position near the minimum air gap. VL - 7 IS - 2 ER -
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