No-Load Voltage Waveform Optimization of Integral Number Slots Large Hydro-Generator by Increase the Number of Damper Bars per Pole

Abstract:

In order to analyze the influence of integral-number slots large hydro-generator no-load voltage waveform by the number of damper bars per pole increase, the 2D moving electromagnetic field-circuit coupling model is established, and the no-load voltage waveforms of a 600MW integral-number slots hydro-generator are calculated and analyzed. The results show that the harmonics are weakened and the waveforms of the no-load voltage are improved observably when reasonable increase the number of the damper bars per pole. The research is helpful for improving design standard and enhancing the operation reliability of the large hydro-generator and electric network.

• Periodical: Advanced Materials Research (Volumes 756-759)
• Pages: 3909-3913
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.756-759.3909
• Online since: September 2013
• Authors: Zhi Gang Zhang, Zhen Nan Fan
• Keywords: Electromagnetic Field (EMF), Finite Element, Hydro-Generator, Integral-Number Slots, No-Load Voltage Waveform, Number of Damper Bars, Optimization, Tooth Harmonics

References

[1] Li Zhesheng, Measurement of Improving No-load Voltage Waveforms of Salient-pole Synchronous Generator, Journal of Harbin Institute of Electrical Technology, vol. 6, no. 3, pp.1-16, Sept (1983).

[2] Chang Eob Kim, J.K. Sykulski, Harmonic Analysis of Output Voltage in Synchronous Generator Using Finite Element Method Taking Account of the Movement, IEEE Trans on Magnetics, vol. 38, no. 2, pp.1249-1252, March (2002).

DOI: 10.1109/20.996319

[3] Li Huaishu, Li Langru, Rang Yuqi, The effect of damper winding on the no-load voltage waveform of salient-pole synchronous generator, Electric Machines and Control, vol. 7, no. 4, pp.267-271, November (2003).

[4] Stefan Keller, Mai Tu Xuan, Jean-Jacques Simond, Computation of the No-Load Voltage Waveform of Laminated Salient-Pole Synchronous Generators, IEEE Trans. on Industry Applications, vol. 42, no. 3, pp.681-687, May/June (2006).

DOI: 10.1109/tia.2006.873663

[5] Wang Shanming, Wang Xiangheng, Li Yixiang, Su Pengsheng, Ma Weiming, Zhang Gaifan, Steady-State Performance of Synchronous Generators With ac and dc Stator Connections Considering Saturation, IEEE Trans. on Energy Conversion, vol. 17, no. 2, pp.176-182, June (2002).

DOI: 10.1109/tec.2002.1009465

[6] Piriou F，Razek A, Finite element analysis in electromagnetic systemsaccounting for electric circuits, IEEE Trans on Magnetics, vol. 29, no. 2, pp.1669-1675, March (1993).

DOI: 10.1109/20.250727

[7] Fu Li-xin, GB/T 1029-2005．The test measures of three phases synchronous machine, Bei Jing: Standards Press of China, 2006.