Reducing Circling Currents in a VHF Class Φ2 Inverter Based on a Fully Analytical Loss Model

This paper proposes a fully analytical loss model to reduce circling currents and improve the power efficiency of class Φ2 inverter. Firstly, expression switching node voltage is derived by analyzing its harmonic components. Based on result, switch modeled as source, where circuit simplified linear network expressions branch are solved. Secondly, root mean square (RMS) values component losses calculated form for The influence parameters current thoroughly analyzed, which derives optimal design constraints Furthermore, detailed guidance equations provided calculate inverter, reduces improves overall efficiency. Finally, inverter prototype built, experimental results demonstrate 7% improvement compared conventional empirical methods.