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Torsional Vibration in Large Adjustable Speed Drive Systems: Origin and Mitigation Methods
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| Author(s) |
Martin BRUHA |
| Abstract |
Drive systems incorporating variable speed drives (VSD) may experience torsional vibration. The rootcause is often explained as torque pulsations produced by the drive. In fact, the vibration phenomenoncan typically appear from two reasons: Excitation of torsional resonance by torque ripple, and closedloop electro-mechanical interaction between VSD and driven load.This paper aims to provide a comprehensive analysis on the origin of such vibrations and to proposecontrol modifications to increase the damping and mitigate torsional vibration issues. Time-domainsimulations and frequency-domain analysis are used to parameterize the converter control properly.For load-commutated inverters (LCI) a robust active damping function is presented. Passive dampingin the speed control loop suitable for any type of variable speed drive is described as well. |
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| Filename: | 0174-epe2015-full-22390089.pdf |
| Filesize: | 691.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
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