TY - GEN
T1 - Thermal and performance comparison of active neutral-point-clamped (ANPC) and Dual FlyingCapacitor ANPC (DFC-ANPC) Inverters
AU - Khoshkbar-Sadigh, Arash
AU - Naderi, Roozbeh
AU - Dargahi, Vahid
AU - Corzine, Keith
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/9
Y1 - 2019/9
N2 - Multilevel inverters provide advantages such as improved efficiency, superior thermal characteristics, a better distribution of switching and conduction power losses, smaller size of passive components including ac filters and EMI filters, as compared to their two-level counterparts. Flying-capacitor (FC)-based multilevel inverters are gaining more attentions, and finding lots of medium-voltage as well as low-voltage industrial applications. Active neutral-point-clamped (ANPC) inverter, as a derived topology from FC-based inverters, offer the advantages of a reduced number of FCs as well as fewer switching cells. However, ANPC inverter needs high-voltage line-frequency switches which makes it difficult to increase number of levels/cells especially to more than five levels. The dual flying-capacitor (DFC)-ANPC topology addresses this by allowing the use of lower voltage power switches in series to replace high-voltage switches due to its feature to have natural zero voltage switching for line-frequency switches. This paper compares the ANPC and DFC-ANPC inverters in terms of high-voltage line-frequency power switch requirements and their practical implementation. Additionally, thermal comparison of both inverters running at low and high modulation indexes is provided, which further verifies the superior performance of the latter topology.
AB - Multilevel inverters provide advantages such as improved efficiency, superior thermal characteristics, a better distribution of switching and conduction power losses, smaller size of passive components including ac filters and EMI filters, as compared to their two-level counterparts. Flying-capacitor (FC)-based multilevel inverters are gaining more attentions, and finding lots of medium-voltage as well as low-voltage industrial applications. Active neutral-point-clamped (ANPC) inverter, as a derived topology from FC-based inverters, offer the advantages of a reduced number of FCs as well as fewer switching cells. However, ANPC inverter needs high-voltage line-frequency switches which makes it difficult to increase number of levels/cells especially to more than five levels. The dual flying-capacitor (DFC)-ANPC topology addresses this by allowing the use of lower voltage power switches in series to replace high-voltage switches due to its feature to have natural zero voltage switching for line-frequency switches. This paper compares the ANPC and DFC-ANPC inverters in terms of high-voltage line-frequency power switch requirements and their practical implementation. Additionally, thermal comparison of both inverters running at low and high modulation indexes is provided, which further verifies the superior performance of the latter topology.
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U2 - 10.1109/ECCE.2019.8912911
DO - 10.1109/ECCE.2019.8912911
M3 - Conference contribution
AN - SCOPUS:85076792723
T3 - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
SP - 5522
EP - 5528
BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Y2 - 29 September 2019 through 3 October 2019
ER -