TY - JOUR
T1 - Symmetrical hybrid multilevel DCAC converters with reduced number of insulated DC supplies
AU - Ruiz-Caballero, Domingo A.
AU - Ramos-Astudillo, Reynaldo M.
AU - Mussa, Samir Ahmad
AU - Heldwein, Marcelo Lobo
PY - 2010/7
Y1 - 2010/7
N2 - Novel symmetric hybrid multilevel topologies are introduced for both single- and three-phase medium-voltage high-power systems. The topology conception is presented in detail, where a three-level switching cell with low component count, and its modulation pattern give the origin of the proposed converters. Voltage sharing and low output-voltage distortion are achieved. The theoretical frequency spectra are derived. Switching devices are separated into high- and low-frequency devices, generating hybrid converters. Five-level three-phase topologies are generated from only three insulated dc sources, while the number of semiconductors is the same as for the cascaded H bridge. Both simulation and experimental results are provided showing the validity of the analysis.
AB - Novel symmetric hybrid multilevel topologies are introduced for both single- and three-phase medium-voltage high-power systems. The topology conception is presented in detail, where a three-level switching cell with low component count, and its modulation pattern give the origin of the proposed converters. Voltage sharing and low output-voltage distortion are achieved. The theoretical frequency spectra are derived. Switching devices are separated into high- and low-frequency devices, generating hybrid converters. Five-level three-phase topologies are generated from only three insulated dc sources, while the number of semiconductors is the same as for the cascaded H bridge. Both simulation and experimental results are provided showing the validity of the analysis.
KW - DC-AC converters
KW - Hybrid inverters
KW - Modulation
KW - Symmetrical multilevel converters
UR - http://www.scopus.com/inward/record.url?scp=77953548534&partnerID=8YFLogxK
U2 - 10.1109/TIE.2009.2036636
DO - 10.1109/TIE.2009.2036636
M3 - Article
AN - SCOPUS:77953548534
SN - 0278-0046
VL - 57
SP - 2307
EP - 2314
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 7
M1 - 5339229
ER -