Sensitivity Analysis of a Non-Symmetrical Resonant Converter with Frequency and Phase-Shift Closed Loop Control for Battery Charging

In this paper, a sensitivity analysis of a non-symmetrical resonant converter for battery charging is presented. The effects of the resonant tank parameters on the output power and the control variables is examined through sensitivity analysis. Pulse frequency modulation (PFM) and phase-shift modulation (PSM) techniques are implemented to control the converter output. A sensitivity analysis is conducted for the whole frequency spectrum and different operation conditions. The sensitivity coefficients of the output power and the control variables are calculated with respect to crucial parameters of the resonant tank. An experimental prototype is implemented to verify the sensitivity analysis and the control method.