TY - GEN
T1 - Neutral point clamped converter DC-link center point current analysis in the DQO reference frame
AU - Moia, Joabel
AU - Perin, Arnaldo J.
AU - Heldwein, Marcelo L.
PY - 2011
Y1 - 2011
N2 - This work proposes a novel analytical method for the analysis of the local average value of the neutral point current in an NPC converter operating with sinusoidal ac port currents. This method is based on the static modeling of the converter performed in a rotating frame coordinate system (dq0) and considering that the modulation strategies can be implemented with a carrier based approach. The importance of such an analysis lies on the fact that low frequency periodic oscillations in the neutral point current increase the dc-link capacitors currents and voltage ripple. The increased ripple lead to more stringent demands for the dc-link capacitors, increasing their losses, cost, volume and weight.
AB - This work proposes a novel analytical method for the analysis of the local average value of the neutral point current in an NPC converter operating with sinusoidal ac port currents. This method is based on the static modeling of the converter performed in a rotating frame coordinate system (dq0) and considering that the modulation strategies can be implemented with a carrier based approach. The importance of such an analysis lies on the fact that low frequency periodic oscillations in the neutral point current increase the dc-link capacitors currents and voltage ripple. The increased ripple lead to more stringent demands for the dc-link capacitors, increasing their losses, cost, volume and weight.
KW - Neutral Point Clamped converter
KW - Three-level converter
KW - neutral point current
KW - rotating frame analysis
UR - http://www.scopus.com/inward/record.url?scp=84255188791&partnerID=8YFLogxK
U2 - 10.1109/COBEP.2011.6085272
DO - 10.1109/COBEP.2011.6085272
M3 - Conference contribution
AN - SCOPUS:84255188791
SN - 9781457716447
T3 - COBEP 2011 - 11th Brazilian Power Electronics Conference
SP - 121
EP - 128
BT - COBEP 2011 - 11th Brazilian Power Electronics Conference
T2 - 11th Brazilian Power Electronics Conference, COBEP 2011
Y2 - 11 September 2011 through 15 September 2011
ER -