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Topologies of three-phase rectifiers with near sinusoidal input currents

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4 Author(s)
Alexa, D. ; Fac. of Electron. & Telecommun., Tech. Univ. ''Gh. Asachi'' Iasi, Romania ; Sirbu, A. ; Dobrea, D.N. ; Goras, T.

Several topologies of three-phase low-harmonic diode rectifiers equipped with inductors, capacitors and diodes, based on an original solution, are presented. Inductors and capacitors are used in conjunction with the three-phase diode rectifier bridge to improve the waveform of the currents drawn from the utility grid. For the basic variant of the three-phase rectifier, representative characteristics and design elements are presented. Starting from this configuration, an AC/DC converter with small holding current and a four-quadrant frequency converter are proposed. The operation of the proposed converters is analysed and, on this basis, design considerations are reviewed. Several possible applications of the converter variants are mentioned. Analytically obtained results have bee experimentally verified.

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:151 ,  Issue: 6 )