Upgrading of double series-resonant halfbridge inverter to improve efficiency

摘要

Domestic induction cookers can have several heating areas, hence multiple- output topologies are commonly used. One of these multipleoutput topologies is the double series-resonant half-bridge inverter. An upgrading of this topology is proposed. This upgrading consists of adding a relay to allow connecting the capacitor tanks in parallel. The aim of this upgrading is to increase the efficiency through the reduction of the device currents. The proposed upgrading topology has been tested by means of a prototype.