A practical approach to harmonic compensation in power systems-series connection of passive and active filters

The authors present a combined system with a passive filter and a small-rated active filter, both connected in series with each other. The passive filter removes load produced harmonics just as a conventional filter does. The active filter plays a role in improving the filtering characteristics of the passive filter. This results in a great reduction of the required rating of the active filter and in eliminating all the limitations faced by using only the passive filter, leading to a practical and economical system. The active filter has a much smaller rating than a conventional active filter. Experimental results obtained from a prototype model are shown to verify the theory developed

Digital Object Identifier: 10.1109/28.108451
Published with permission from the copyright holder. This is the institute's copy, as published in Industry Applications, IEEE Transactions on, Nov.-Dec. 1991, Volume 27, Issue 6, Pages 1020-1025.
Publisher URL:http://dx.doi.org/10.1109/28.108451
Copyright © 1991 IEEE. All rights reserved.