An approach to harmonic current-free AC/DC power conversion for large industrial loads: the integration of a series active filter with a double-series diode rectifier

This paper proposes a new harmonic current-free AC/DC power conversion system characterized by the integration of a small-rated series active filter, with a large-rated double-series diode rectifier. The DC terminals of the active filter are directly connected in parallel with those of the diode rectifier, thereby forming a common DC bus. The active filter enables the diode rectifier to draw three-phase sinusoidal currents from the utility. In addition, it can provide the supplementary value-added function of regulating the common DC-bus voltage to a limited extent of ±5%, slightly increasing the RMS voltage rating, but not increasing the peak voltage rating. Experimental results obtained from a 5 kW laboratory system verify the practical viability and cost effectiveness of the proposed system

Digital Object Identifier: 10.1109/28.633801
Published with permission from the copyright holder. This is the institute's copy, as published in Industry Applications, IEEE Transactions on, Sept.-Oct. 1997, Volume 33, Issue 5, Pages 1233-1240.
Publisher URL:http://dx.doi.org/10.1109/28.633801
Copyright © 1997 IEEE. All rights reserved.