A high step-up interleaved converter with coupled inductor and voltage-lift technique

摘要

This paper proposes a high step-up interleaved converter with coupled inductor and voltage-lift technique. The proposed converter achieves high voltage gain by employing coupled inductor and voltage-lift technique. Moreover, low input current ripple is realized by using interleaved technique. The energy in the leakage inductance of the coupled inductor is recycled to the output load. The voltage stresses on the main switches are reduced and the voltage spikes across the main switches are alleviated. This paper shows a theoretical analysis in steady-state and experimental results with a small-scale prototype circuit.