Exploring Different Snubber Circuit Solutions for Enhancing PSFB Converter Performance and Reliability
摘要
The Phase-Shifted Full Bridge (PSFB) converter is a prominent choice for medium to high-power DC-DC applications, emphasizing efficient power conversion, high-power density, and isolation, particularly in applications like renewable energy technologies and electric vehicle charging systems. The PSFB can achieve excellent efficiencies, attributed to its soft-switching capabilities without the need for additional components. However, traditional PSFB converters encounter several challenges, specifically secondary side ringing, spikes, and duty cycle loss. These challenges can significantly impact the performance and reliability of PSFB converters. To solve these issues, researchers often employ techniques such as snubber circuits. This study investigates secondary side voltage problems and evaluates the effectiveness, efficiency, and complexity of C-only output snubber, RCD snubber, and Active snubber clamping circuit configurations using MATLAB Simulink models, providing insights for PSFB converter design and application in high-power contexts.