The Cause of Mechanical Vibration of Palasher Synchronous Motors and its Removal

Authors

  • Jiří Pavelka Czech Technical University in Prague Praha
  • Josef Šimek
  • Pavel Kobrle Czech Technical University in Prague Praha
  • Petr Kokeš The Czech Academy of Sciences Praha

DOI:

https://doi.org/10.14311/TEE.2019.4.068

Abstract

The paper describes the procedure and the result of the analysis of mechanical vibrations of mining machines at the Palasher mine in the Russian Federation. The cause of these vibrations was the change in the magnitude of the magnetic flux in the air gap. The simulations showed the possibility of eliminating these changes in magnetic flux by injecting suitable voltages into the stator windings. The implementation of this injection is further described by torque variable component feed-direct compensation. Finally, oscillography records are presented before and after injection.

Author Biographies

Jiří Pavelka, Czech Technical University in Prague Praha

Faculty of Electrical Engineering, Department of Electric Drives and Traction

Pavel Kobrle, Czech Technical University in Prague Praha

Faculty of Electrical Engineering,Department of Electric Drives and Traction

Petr Kokeš, The Czech Academy of Sciences Praha

Institute of Thermomechanics, Department D 6 - Electrical Engineering and Electrophysics

References

J. Pavelka, P. Pavelka, and J. Šimek, “Kmitání těžního stroje na dole Kirovsk,” (in Czech), 34th Conference on Electric Drives (ELPO), Pilsen, June 2015, pp. 44-49.

J. Pavelka, J. Šimek, P. Kobrle, “Posudek a analýza příčin mechanického rozkmitání synchronního motoru 1,8 MW, 6 kV na zakázce Malý Palašer,” (in Czech), unpublished.

P. Krause, O. Wasynczuk, S. Sudhoff, S. Pekarek, Analysis of Electric Machinery and Drive Systems, 3rd ed., John Wiley&Sons, Inc., Hoboken, New Jersey, 2013.

https://doi.org/10.1002/9781118524336

A.H. Toliyat, N.A. Al-Nuaim, “Simulation and Detection of Dynamic Air-Gap Eccentricity in Salient-Pole Synchronous Machines,” IEEE Trans. Ind. App., vol. 35, pp. 86-93, January/February 1999. DOI: 10.1109/28.740849

https://doi.org/10.1109/28.740849

J. Pavelka, J. Šimek, P. Kobrle and P. Kokeš, “Příčina mechanického chvění těžních synchronních motorů Palašer a jeho odstranění,” (in Czech), 36th Conference on Electric Drives (ELPO), Pilsen, June 2019, pp. 1-21.

J. Pavelka, J. Šimek, P. Kobrle, P. Kokeš, “Příčina mechanického chvění těžních synchronních motorů Palašer a jeho odstranění,” (in Czech), Elektro, vol. 11, November 2019, pp. 6-9.

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Published

2020-03-30

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Section

Articles