Fully soft switched high step‐up/down bidirectional buck/boost converter with reduced switch voltage stress

Abstract A fully soft switched high step‐up/down bidirectional converter is presented in this paper. The voltage conversion ratio achieved by a pair of coupled inductors along with capacitor while all active switches operate at zero switching. To provide switching condition for the main and absorb leakage inductance energy inductors, clamp circuits are utilized both operating modes. Furthermore, body diodes which as turn off current (ZCS) thus, reverse recovery problem eradicated. Additionally, stress reduced comparison basic buck/boost their drain‐source resistance relatively lower leads to considerably conduction loss. All mentioned advantages low number components contribute efficiency. Theoretical analysis proposed detail modes experimental results from implementation 300 W prototype circuit confirm validity performance. comprehensive table between recent counterpart converters demonstrate advantages.