TY - GEN
T1 - Interleaved or sequential switching - For increasing the switching frequency
AU - Ferreira, André Cabral
AU - Kennel, Ralph M.
PY - 2007
Y1 - 2007
N2 - Using several IGBTs in parallel it is possible to operate standard IGBTs with higher switching frequencies than usual. Based on this concept the current load and thermal losses are split between the paralleled devices. The free wheeling diodes, however, cannot be controlled actively and therefore do not share in sequential switching. In 3-phase VSI applications there is the danger of overloading one of the paralleled free wheeling diodes. This paper presents a concept of magnetic freewheeling control resulting in the free wheeling current following the same sequential concept as in the IGBTs. Magnetic freewheeling control makes sequential switching applicable to 3-phase voltage source inverters (VSI).
AB - Using several IGBTs in parallel it is possible to operate standard IGBTs with higher switching frequencies than usual. Based on this concept the current load and thermal losses are split between the paralleled devices. The free wheeling diodes, however, cannot be controlled actively and therefore do not share in sequential switching. In 3-phase VSI applications there is the danger of overloading one of the paralleled free wheeling diodes. This paper presents a concept of magnetic freewheeling control resulting in the free wheeling current following the same sequential concept as in the IGBTs. Magnetic freewheeling control makes sequential switching applicable to 3-phase voltage source inverters (VSI).
UR - http://www.scopus.com/inward/record.url?scp=58149089667&partnerID=8YFLogxK
U2 - 10.1109/ICPE.2007.4692486
DO - 10.1109/ICPE.2007.4692486
M3 - Conference contribution
AN - SCOPUS:58149089667
SN - 9781424418725
T3 - 7th Internatonal Conference on Power Electronics, ICPE'07
SP - 738
EP - 741
BT - 7th Internatonal Conference on Power Electronics, ICPE'07
PB - IEEE Computer Society
T2 - 7th Internatonal Conference on Power Electronics, ICPE'07
Y2 - 22 October 2007 through 26 October 2007
ER -