TY - GEN
T1 - Optimal voltage-balancing compensator in the modulation of a neutral-point-clamped converter
AU - Zaragoza, Jordi
AU - Pou, Josep
AU - Ceballos, Salvador
AU - Robles, Eider
AU - Jaen, Carles
PY - 2007
Y1 - 2007
N2 - This paper presents an optimal voltage-balancing compensator for a particular type of modulation technique applied to the neutral-point-clamped converter. This modulation technique is able to completely eliminate low-frequency voltage oscillations in the neutral point. However, its dynamic for balancing voltages on the dc-link capacitors is slow. The proposed compensator generates an optimal offset for the modulation signals that improves significantly the voltage balancing issue for any operation condition of the converter. Furthermore, this strategy does not increase switching frequencies of the devices. The algorithm is tested and verified by simulation and experiment.
AB - This paper presents an optimal voltage-balancing compensator for a particular type of modulation technique applied to the neutral-point-clamped converter. This modulation technique is able to completely eliminate low-frequency voltage oscillations in the neutral point. However, its dynamic for balancing voltages on the dc-link capacitors is slow. The proposed compensator generates an optimal offset for the modulation signals that improves significantly the voltage balancing issue for any operation condition of the converter. Furthermore, this strategy does not increase switching frequencies of the devices. The algorithm is tested and verified by simulation and experiment.
KW - Carrier-based modulation
KW - Neutral-point-clamped converter
KW - Optimal compensator
KW - Three-level converter
KW - Voltage balance
UR - http://www.scopus.com/inward/record.url?scp=50049118392&partnerID=8YFLogxK
U2 - 10.1109/ISIE.2007.4374685
DO - 10.1109/ISIE.2007.4374685
M3 - Conference contribution
AN - SCOPUS:50049118392
SN - 1424407559
SN - 9781424407552
T3 - IEEE International Symposium on Industrial Electronics
SP - 719
EP - 724
BT - 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings
T2 - 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007
Y2 - 4 June 2007 through 7 June 2007
ER -