TY - GEN
T1 - Three-level NPC-based bidirectional PWM converter operation for high availability/power quality bipolar DC distribution networks
AU - Moia, Joabel
AU - Heldwein, Marcelo Lobo
PY - 2013
Y1 - 2013
N2 - This work proposes an operation strategy for a four-legs neutral point clamped converter (NPC) to be used in future bipolar dc distribution networks. The operation of the fourth leg with a three-level modulation is proposed to reduce the required inductance and switching losses. In addition, a proper control scheme based on a state space averaged model for the fourth NPC leg is introduced. This provides ripple free and balanced NPC partial dc-link voltages. The system is able to provide increased redundancy and improved dc voltage quality. Simulation and experimental results are presented to illustrate the operation of the 4-legs NPC with the proposed control and modulation scheme.
AB - This work proposes an operation strategy for a four-legs neutral point clamped converter (NPC) to be used in future bipolar dc distribution networks. The operation of the fourth leg with a three-level modulation is proposed to reduce the required inductance and switching losses. In addition, a proper control scheme based on a state space averaged model for the fourth NPC leg is introduced. This provides ripple free and balanced NPC partial dc-link voltages. The system is able to provide increased redundancy and improved dc voltage quality. Simulation and experimental results are presented to illustrate the operation of the 4-legs NPC with the proposed control and modulation scheme.
KW - dc grid
KW - fault tolerance
KW - multilevel converters
KW - neutral point clamped converter
KW - power quality
UR - http://www.scopus.com/inward/record.url?scp=84890208735&partnerID=8YFLogxK
U2 - 10.1109/EPE.2013.6634451
DO - 10.1109/EPE.2013.6634451
M3 - Conference contribution
AN - SCOPUS:84890208735
SN - 9781479901166
T3 - 2013 15th European Conference on Power Electronics and Applications, EPE 2013
BT - 2013 15th European Conference on Power Electronics and Applications, EPE 2013
T2 - 2013 15th European Conference on Power Electronics and Applications, EPE 2013
Y2 - 2 September 2013 through 6 September 2013
ER -