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An analysis of three-phase rectifiers with near-sinusoidal input currents

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3 Author(s)
Alexa, D. ; Fac. of Electron. & Telecommun., Tech. Univ. "Gh. Asachi" Iasi, Romania ; Sirbu, A. ; Dobrea, D.-M.

An analysis of a three-phase low-harmonic diode rectifier equipped with inductors, capacitors, and diodes is 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. The operation of the proposed converter is analyzed and, on this basis, design considerations are commented upon. The converter characteristics are determined as a function of the load current. Comparisons between the studied converter and other rectifiers (classical rectifiers, with passive or active filters, and three-phase low-harmonic rectifiers applying the third-harmonic current injection) are also presented. Several possible applications of the three-phase rectifiers with near-sinusoidal input currents are mentioned. Analytically obtained results are experimentally verified.

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Industrial Electronics, IEEE Transactions on  (Volume:51 ,  Issue: 4 )