TY - GEN
T1 - Synchronous optimal pulsewidth modulation digital implementation concept for multilevel converters
AU - Lago, Jackson
AU - Heldwein, Marcelo Lobo
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/5/10
Y1 - 2016/5/10
N2 - This work proposes a digital implementation concept for a synchronous optimal pulse width modulator (SOP) exemplarily used in a three-phase 5-level NPC H-bridge inverter driving a permanent magnet synchronous motor at variable speed. The numeric optimization is performed offline and the resulting information that defines the inverter output waveforms are stored in a look-up table. The real time portion of the modulator recomposes the pre-computed optimal waveforms and chooses the switching states that, both, synthesize the waveforms and perform voltage balance for the three bipolar dc-buses of the power converter. The proposed modulation algorithm main feature is that changes in the number of commutations per cycle are transparently handled without the need for the dynamic reconfiguration of the digital modulator, which makes it very suitable for synchronous modulation techniques in variable speed applications.
AB - This work proposes a digital implementation concept for a synchronous optimal pulse width modulator (SOP) exemplarily used in a three-phase 5-level NPC H-bridge inverter driving a permanent magnet synchronous motor at variable speed. The numeric optimization is performed offline and the resulting information that defines the inverter output waveforms are stored in a look-up table. The real time portion of the modulator recomposes the pre-computed optimal waveforms and chooses the switching states that, both, synthesize the waveforms and perform voltage balance for the three bipolar dc-buses of the power converter. The proposed modulation algorithm main feature is that changes in the number of commutations per cycle are transparently handled without the need for the dynamic reconfiguration of the digital modulator, which makes it very suitable for synchronous modulation techniques in variable speed applications.
KW - High power ac drives
KW - Modulation
KW - Multilevel Converters
UR - http://www.scopus.com/inward/record.url?scp=84973623390&partnerID=8YFLogxK
U2 - 10.1109/APEC.2016.7468266
DO - 10.1109/APEC.2016.7468266
M3 - Conference contribution
AN - SCOPUS:84973623390
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2833
EP - 2839
BT - 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Y2 - 20 March 2016 through 24 March 2016
ER -