An Input-Parallel–Output-Series Multilevel Boost Converter With a Uniform Voltage- Balance Control Strategy

Abstract

An input-parallel-output-series multilevel boost converter is proposed in this paper. The theoretical analysis of this topology indicates that it has a high voltage gain, low component stress, small input current ripple, and automatic current balancing function for all input inductor currents. A uniform voltage balance control strategy is subsequently proposed to address the capacitor voltage imbalance issue. The experimental study has been done to verify the correctness and feasibility of the proposed topology and the voltage-balance control strategy.