TY - JOUR
T1 - Evaluation of Modulation Schemes for Three-Phase to Three-Phase Matrix Converters
AU - Helle, Lars
AU - Larsen, Kim B.
AU - Joergensen, Allan Holm
AU - Munk-Nielsen, Stig
AU - Blaabjerg, Frede
PY - 2004
Y1 - 2004
N2 - This paper presents a method for evaluating different modulation schemes employed with three-phase to three-phase matrix converters. The evaluation method addresses three important modulator characteristics: the output waveform quality, the input waveform quality and the switching losses associated with the modulation schemes. The method is used to evaluate four different modulation strategies, all based on the direct space-vector modulation approach. Further, regarding the switching losses, the paper proposes a new space-vector approach by which the switching losses can be reduced by 15 %-35 %, depending on the output load angle. This new modulation approach is applicable whenever the output voltage reference is below half the input voltage, and the output voltage quality is then superior to that of the conventional space vector modulation scheme. The functionality of the new modulation scheme is validated by both simulations and experimental results and compared to waveforms obtained by using exiting space vector modulation schemes. The output voltage of the proposed scheme turns out to be comparable to the best of the conventional schemes while the input current is more distorted.
AB - This paper presents a method for evaluating different modulation schemes employed with three-phase to three-phase matrix converters. The evaluation method addresses three important modulator characteristics: the output waveform quality, the input waveform quality and the switching losses associated with the modulation schemes. The method is used to evaluate four different modulation strategies, all based on the direct space-vector modulation approach. Further, regarding the switching losses, the paper proposes a new space-vector approach by which the switching losses can be reduced by 15 %-35 %, depending on the output load angle. This new modulation approach is applicable whenever the output voltage reference is below half the input voltage, and the output voltage quality is then superior to that of the conventional space vector modulation scheme. The functionality of the new modulation scheme is validated by both simulations and experimental results and compared to waveforms obtained by using exiting space vector modulation schemes. The output voltage of the proposed scheme turns out to be comparable to the best of the conventional schemes while the input current is more distorted.
M3 - Journal article
SN - 0278-0046
VL - 51
SP - 158
EP - 171
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 1
ER -