A high-quality three-phase diode rectifier, based on a conventional rectifier with an add-on simple cell with line-frequency commutated AC switches is presented in this paper. The boost action introduced by the commutation cell allows for a complete compensation of the voltage drop across the input inductors. Moreover, as compared to other linefrequency commutated rectifiers, the proposed circuit allows compliance with the low-frequency harmonic limits defined in the technical report IEC 61000-3-4 for any power range. High-efficiency and minimum EMI are obtained due to the low-frequency commutations. A converter prototype was built and tested. The results confirm the theoretical analysis.
A High-Quality Three-Phase Rectifier complying with IEC 61000-3-4 Standards
SPIAZZI, GIORGIO
2001
Abstract
A high-quality three-phase diode rectifier, based on a conventional rectifier with an add-on simple cell with line-frequency commutated AC switches is presented in this paper. The boost action introduced by the commutation cell allows for a complete compensation of the voltage drop across the input inductors. Moreover, as compared to other linefrequency commutated rectifiers, the proposed circuit allows compliance with the low-frequency harmonic limits defined in the technical report IEC 61000-3-4 for any power range. High-efficiency and minimum EMI are obtained due to the low-frequency commutations. A converter prototype was built and tested. The results confirm the theoretical analysis.Pubblicazioni consigliate
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