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

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2 Author(s)
Fujita, H. ; Okayama Univ., Japan ; Akagi, H.

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

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Industry Applications, IEEE Transactions on  (Volume:27 ,  Issue: 6 )