By Topic

Electrical Power Flow Spectral Analysis relating to Vibration in a Large Electromechanical System

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Lines, C. ; Sch. of Electr. & Inf. Eng., Univ. of the Witwatersrand, Johannesburg ; Warner, P.

A spectral analysis of the electrical power draw of the two 5.2 MW motors driving a large grinding mill is performed to determine whether they are the source of a severe 55.8 Hz vibration. The applicable electrical and mechanical data was measured during October 2006 and recorded with a sample rate of 5 kHz over a few minutes. It is shown that the motors do not supply the mechanical system with any average power to cause the vibration. Rather, the motors provide insignificant damping for the vibration and circulate minimal energy associated with the vibration via their common 11 kV bus bars. The results correlate with a Simulink simulation of two motors fed off a common supply with out-of-phase torque disturbances at their two shafts.

Published in:

Power Engineering Society Conference and Exposition in Africa, 2007. PowerAfrica '07. IEEE

Date of Conference:

16-20 July 2007