Evaluation of Common-Mode Noise in GNSS-Based Synchronized Parallel-Connected Power Converters with Phase Shift Control

Abstract

This letter evaluates common-mode (CM) noise in two parallel-connected buck converters with phase shift control. These converters were synchronized based on real-time information from the Global Navigation Satellite System (GNSS). Utilizing real-time information from GNSS enables independent control of the two converters while ensuring high synchronization precision. The experimental results show that GNSS-based synchronization of each converter helps achieve the conventional phase shift control and shifts the first CM noise peak to a higher frequency.