Loss and Efficiency Optimization Approach for Interleaved Switching Rectifier Circuits with AC Input based on Comprehensive Loss Analysis

In this paper, a systematic method to improve losses and efficiency is proposed through loss and efficiency analysis of an interleaved switching rectifier circuit, which is one of the switching rectifier circuits with AC input.First, the current values of key components operating in steady state were classified into three proportional constants by weighting according to the load current, based on the basic circuit of the interleaved switching rectifier.Using these results, internal power losses related to load current can be analyzed.To verify the validity of the loss analysis, an experimental circuit for approximately 400W class interleaved switching rectifier was constructed and its results were compared with the theoretical calculations.The comparison showed that, across the entire load range, the theoretical and experimental values exhibited similar trends, indicating that the proposed approach can be effectively utilized in the actual design process.