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Alleviating shaft torsional vibrations caused by electric arc furnaces for a low capacity turbine generator by using a flywheel coupler

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4 Author(s)
W. M. Lin ; Department of Electrical Engineering, National Sun-Yet Sen University, Kaohsiung, Taiwan, R.O.C. ; C. C. Tsai ; C. H. Lin ; T. P. Tsao

The current unbalance produced by the EAF operations may induce the torsional vibrations on shafts of a small scale steam turbine generator nearby. The vibrations might not be ignored due to that the unbalance is severe and sustained. What's even worse, the vibrations might be significant if there are any vibration modes which frequencies are closed to the double system frequency. In this paper, turbine shafts vibrations induced by the EAF operations are analyzed by modeling and simulating a practical distribution system with the MATLAB PSB. Since it is the field measured current data that are fed to the models, the time domain responses can be quite resemble to the real. Furthermore, we have designed a flywheel coupler, which can be quite effective in alleviating vibrations caused by the current unbalance.

Published in:

Industrial Engineering and Engineering Management (IEEM), 2010 IEEE International Conference on

Date of Conference:

7-10 Dec. 2010