Performance Improvement of Soft Switching DC-DC Boost Converter for Photovoltaic (PV) Applications

摘要

This paper presents a soft-switching DC-DC boost converter using a resonant circuit with an active switch for improved performance. The proposed DC-DC converter achieves high efficiency with low voltage stress by employing zero current switching (ZCS) during turn-on and zero voltage switching (ZVS) during turn-off for both the main and auxiliary switches. The operating principles of each mode are analyzed and a detailed design procedure of the proposed boost converter is presented. Moreover, the proposed converter can be used for photovoltaic (PV) energy system especially to realize maximum power point tracking (MPPT) to maximize the efficiency of PV energy system. The analysis of proposed converter in the paper is demonstrated by both simulation and experimental results for effectiveness of the study.