Influence of armature-rail contact surface morphology on starting characteristics of armature

Che Yingdong; Zhao Weikang; Wang Zhizeng; Tian Wen; Kong Youjun; Yuan Weiqun; Yan Ping

doi:10.11884/HPLPB202032.190370

Volume 32 Issue 5

Feb. 2020

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2020 > 32(5): 055003

Che Yingdong, Zhao Weikang, Wang Zhizeng, et al. Influence of armature-rail contact surface morphology on starting characteristics of armature[J]. High Power Laser and Particle Beams, 2020, 32: 055003. doi: 10.11884/HPLPB202032.190370

Citation:

Che Yingdong, Zhao Weikang, Wang Zhizeng, et al. Influence of armature-rail contact surface morphology on starting characteristics of armature[J]. High Power Laser and Particle Beams, 2020, 32: 055003. doi: 10.11884/HPLPB202032.190370

Citation:

PDF( 1225 KB)

Influence of armature-rail contact surface morphology on starting characteristics of armature

doi: 10.11884/HPLPB202032.190370

Che Yingdong^{1, 2, 3
,},
Zhao Weikang^{1, 2, 3},
Wang Zhizeng^{2, 3},
Tian Wen^{1, 2, 3},
Kong Youjun^{1, 2, 3},
Yuan Weiqun^{2, 3
,},
Yan Ping^{2, 3}

1.
University of Chinese Academy of Sciences, Beijing 100190, China
2.
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
3.
Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 2019-09-19
Rev Recd Date: 2019-11-25

Available Online: 2020-04-23

Publish Date: 2020-02-10

Abstract

Abstract

The armature-rail contact interface affects the characteristics of armature startup in the pulsed high current linear driver. Furthermore, the armature startup has an influence on the system efficiency and lifetime. This paper discusses the effect of armature surface morphology on armature startup. In the experiments, a high-speed camera was set up to observe the armature startup. Combined with the finite element software ANSYS, the pre-tightening force and contact status were simulated. Besides, the electromagnetic pressure and current density were also obtained by simulation. The results show that groove increased the flexibility of armature and the homogeneity of current distribution was improved by the current skin effect. Owing to the increasing pressure, the groove armature startup was delayed and its contact resistance reduced. The results have important significance to improve contact condition and reduce erosion.
- armature-rail contact state,
- armature startup,
- armature surface morphology,
- high-speed camera,
- finite element simulation

FullText(HTML)

References(11)

References

[1]	Marshall R A, Ying W. Railguns: their science and technology[M]. Beijing: China Machine Press, 2004: 4-5.
[2]	Hsieh K T, Kim B K. 3D modeling of sliding electrical contact[J]. IEEE Trans Magn, 1997, 33(1): 237-239.
[3]	Schneider M, Woetzel M, Wenning W, et al. The ISL rapid fire railgun project RAFIRA—Part Ⅰ: Technical aspects and design considerations[J]. IEEE Trans Magn, 2009, 45(1): 442-447. doi: 10.1109/TMAG.2008.2008468
[4]	Barber J P, Dreizin Y A. Model of contact transitioning with realistic armature-rail interface[J]. IEEE Trans Magn, 1995, 31(1): 96-100. doi: 10.1109/20.364721
[5]	Barber J P, Challita A, Mass B, et al. Contact transition in metal armatures railguns[J]. IEEE Trans Magn, 1991, 27(1): 228-232. doi: 10.1109/20.101031
[6]	Watt T, Stefani F, Crawford M, et al. Investigation of damage to solid-armature railguns at startup[J]. IEEE Trans Magn, 2007, 43(1): 214-218. doi: 10.1109/TMAG.2006.887432
[7]	朱仁贵, 李治源, 张倩, 等. 电磁发射枢轨界面初始接触状态研究[J]. 强激光与粒子束, 2014, 26:115003. (Zhu Rengui, Li Zhiyuan, Zhang Qian, et al. Initial contact status for interface between armature and rail in electromagnetic launch. High Power Laser and Particle Beams, 2014, 26: 115003
[8]	徐伟东, 袁伟群, 陈允, 等. 电磁轨道发射器连续发射的滑动电接触[J]. 强激光与粒子束, 2012, 24(3):668-672. (Xu Weidong, Yuan Weiqun, Chen Yun, et al. Sliding electrical contact performance of electromagnetic launcher system in rapid fire mode. High Power Laser and Particle Beams, 2012, 24(3): 668-672
[9]	陈允, 徐伟东, 袁伟群, 等. 电磁发射中铝电枢与不同材料导轨间的滑动电接触特性[J]. 高电压技术, 2013, 39(4):937-942. (Chen Yun, Xu Weidong, Yuan Weiqun, et al. Sliding electrical contacts between aluminum armature and different material rails in railgun. High Voltage Engineering, 2013, 39(4): 937-942 doi: 10.3969/j.issn.1003-6520.2013.04.025
[10]	Schneider M, Eckenfels D, Nezirevic S. Doppler-radar: A possibility to monitor projectile velocity[J]. IEEE Trans Magn, 2003, 39(1): 183-188. doi: 10.1109/TMAG.2002.805956
[11]	Asay J R, Konrad C H, Hall C A, et al. Continuous measurements of in-bore projectile velocity[J]. IEEE Trans Magn, 1989, 25(1): 46-51. doi: 10.1109/20.22502