RT Conference Proceedings
T1 Soft-switching topology for a fault-tolerant neutral-point-clamped converter
A1 Ceballos, Salvador
A1 Pou, Josep
A1 Zaragoza, Jordi
A1 Robles, Eider
A1 Villate, José Luis
A1 Martín, José Luis
AB This paper presents a new three-level topology based on the neutral-point-clamped converter. The new topology includes a fourth leg that provides fault tolerance to the converter. Furthermore, during normal operation mode, this leg is able to provide a stiff neutral voltage. Consequently, the low-frequency voltage oscillations that appear in the neutral point of the standard three-level topology for some operation conditions no longer exist. As a result, the modulation strategy of the three main legs of the converter does not have to take care of voltage balance, and it can be design to improve the efficiency of the converter. On the other hand, the addition of a fourth leg to the converter produces additional losses. However, in order to eliminate switching losses of this leg, all the power devices commutate under zero-current or zero-voltage transitions. Some simulation results are presented to show viability of this approach under both, normal operation mode and fault event.
SN 1424407559
SN 9781424407552
YR 2007
FD 2007
LK https://hdl.handle.net/11556/1570
UL https://hdl.handle.net/11556/1570
LA eng
NO Ceballos , S , Pou , J , Zaragoza , J , Robles , E , Villate , J L & Martín , J L 2007 , Soft-switching topology for a fault-tolerant neutral-point-clamped converter . in 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings . , 4375125 , IEEE International Symposium on Industrial Electronics , pp. 3186-3191 , 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007 , Caixanova - Vigo , Spain , 4/06/07 . https://doi.org/10.1109/ISIE.2007.4375125
NO conference
DS TECNALIA Publications
RD 28 jul 2024