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

Jiří Pavelka, Josef Šimek, Pavel Kobrle, Petr Kokeš

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.

References


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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

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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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