A novel auxiliary resonant commutated pole inverter topology with zero current turn-off switching

This paper proposes a novel auxiliary resonant commutated pole inverter (ARCPI) topology. Many investigations for resonant converters have been studied and reported. The auxiliary resonant commutated pole inverter (ARCPI) is one of the most successful circuit topologies. However, the conventional ARCPIs have the switching property like the general PWM inverters with the capacitive snubbers at turn-off. Therefore, as the load current increases, the turn-off switching losses may be so serious and can be considerable. The proposed ARCPI solves this problem, which can achieve ZCS at turn-off with high frequency transformers, switches, and capacitors. The analyses and the characteristics for each operation mode of the proposed circuit are described in detail and the validity is verified by the simulation and experimental results