Evaluation of Quasi-resonant DC Link Topologies for Soft Switching of Multiple DC-Inputs Three Phase Inverter

Possible soft-switching solutions for a Multiple DC-inputs Direct Electric Power Converter are investigated. Quasi-Resonant DC link circuits are considered for the task. By optimizing the resulting combination, a novel topology is developed. The resonant operation in combination with multiple power sources is modelled. Equations for the resonant circuit trip current calculation are adjusted to support dual input operation.