TY - GEN
T1 - Analysis and optimized design of a new dc-dc converter with asymmetrical voltage distribution for stepping down 1500 V to 48 V
AU - Wang, Huai
AU - Chung, Henry
AU - Ioinovici, Adrian
PY - 2011
Y1 - 2011
N2 - A proposed converter for a particular class of highvoltage applications features an asymmetrical voltage distribution between the primary-side switch pairs, allowing for improved utilization of switching devices and extended softswitching load range. A hybrid zero-voltage-switching and zero-current-switching (ZVS-ZCS) scheme gives soft-commutations of the two switch pairs from very light load to full load conditions. The properties of the voltage distributions on switch pairs and dc conversion ratio of the converter are explored. The trade-off conditions of soft-switching range, duty-cycle gain with ZCS, current stresses on switching devices, energy circulation and duty-cycle loss due to ZVS are investigated to allow for an optimum design. The theory is verified by a 2 kW, 1500/48 V experimental prototype.
AB - A proposed converter for a particular class of highvoltage applications features an asymmetrical voltage distribution between the primary-side switch pairs, allowing for improved utilization of switching devices and extended softswitching load range. A hybrid zero-voltage-switching and zero-current-switching (ZVS-ZCS) scheme gives soft-commutations of the two switch pairs from very light load to full load conditions. The properties of the voltage distributions on switch pairs and dc conversion ratio of the converter are explored. The trade-off conditions of soft-switching range, duty-cycle gain with ZCS, current stresses on switching devices, energy circulation and duty-cycle loss due to ZVS are investigated to allow for an optimum design. The theory is verified by a 2 kW, 1500/48 V experimental prototype.
UR - http://www.scopus.com/inward/record.url?scp=79955751952&partnerID=8YFLogxK
U2 - 10.1109/APEC.2011.5744656
DO - 10.1109/APEC.2011.5744656
M3 - Conference contribution
AN - SCOPUS:79955751952
SN - 9781424480845
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 593
EP - 599
BT - 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
T2 - 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
Y2 - 6 March 2011 through 10 March 2011
ER -