Bi-Directional Edge-Resonant Switched Capacitor Cell-Assisted Soft-Switching PWM DC–DC Converter For Renewable Energy Applications
This paper presents a soft-switching pulse width modulation (PWM) non-isolated bi-directional dc–dc converter
embedding an edge-resonant switched capacitor (ER-SWC) cell. The conceptual dc–dc converter treated herein can achieve
high-frequency zero-current soft-switching turn-on and zero-voltage soft-switching turn-off operations in the active
switches. Those advantageous properties enable a wide range of soft-switching operations together with a high-voltage step-
up conversion ratio with a reduced current stress. Circuit design guideline based on the soft-switching range is introduced;
then, a theoretical analysis is carried out for investigating the step up voltage conversion ratio.