This paper presents a soft-switched ac/dc converter structure, useful
for current-fed inverters and forced-commutated PWM rectifiers with in
ductive load, Typical applications are high-power ac motor drives, mag
net power supplies and active power filters with inductive energy stor
age. As compared to hard-switched converters, the proposed solution ra
ils for some increase of the circuit complexity, but provides improved
input and output performances due to the higher switching frequency.
Further improvements are ensured by proper control of the commutation
process.Actual converter capabilities are demonstrated by experimental
results.