TY - JOUR
T1 - Modulation Schemes With Enhanced Switch Thermal Distribution for Single-Phase AC–DC–AC Reduced-Switch Converters
AU - Qin, Zian
AU - Loh, Poh Chiang
AU - Blaabjerg, Frede
PY - 2016
Y1 - 2016
N2 - Modulation schemes can significantly change the performance of a converter in the steady state. They have, thus, been extensively studied, but directed more at three-phase topologies, where triplen offsets are added. Single-phase systems, including ac-dc-ac, are less widely pursued, even though various topologies have since been proposed. The intention of this paper is, thus, to study two promising single-phase ac-dc-ac converters using reduced number of switches, and subsequently proposes modulation schemes for them. The proposed schemes help the converters to achieve better thermal spread among their switches, while keeping their dc-link voltages low. Single points of failure are thus minimized, allowing the converters to have longer lifetimes. Simulation and experimental results have demonstrated the intended performances, hence verifying the analyses presented in this paper.
AB - Modulation schemes can significantly change the performance of a converter in the steady state. They have, thus, been extensively studied, but directed more at three-phase topologies, where triplen offsets are added. Single-phase systems, including ac-dc-ac, are less widely pursued, even though various topologies have since been proposed. The intention of this paper is, thus, to study two promising single-phase ac-dc-ac converters using reduced number of switches, and subsequently proposes modulation schemes for them. The proposed schemes help the converters to achieve better thermal spread among their switches, while keeping their dc-link voltages low. Single points of failure are thus minimized, allowing the converters to have longer lifetimes. Simulation and experimental results have demonstrated the intended performances, hence verifying the analyses presented in this paper.
KW - Thermal distribution
KW - Modulation scheme
KW - Single-phase converter
KW - Ac-dc-ac converter
KW - Reduced switch converter
U2 - 10.1109/TPEL.2015.2451733
DO - 10.1109/TPEL.2015.2451733
M3 - Journal article
SN - 0885-8993
VL - 31
SP - 3302
EP - 3313
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 4
ER -