Primary saturable inductor for high power zero voltage switching DC-DC converter with IGBTs

The use of additional capacitors and a resonating inductor with a bridge converter can allow zero voltage switching in high-power slow-switching applications. The performance can be further improved if a saturable reactor is used. This paper examines the design of such a saturable reactor and presents experimental results from a 3 kW, 30 kHz IGBT DC-DC converter.