Research on 10 kW DC-DC Converter with Wide Input Range
摘要
In this paper, a 10 kW DC-DC converter with wide input range is studied. To accommodate high voltage input and high current output requirements, an input voltage average control strategy is implemented, building upon the two-module input series output parallel (ISOP) structure. The single-module 5 kW includes a pre-stage LLC and a post-stage six-phase interleaved parallel Buck converter to meet the needs of a wide input and output voltage range. Finally, a 10 kW converter is built. The input voltage range is 400–720 V, and the output voltage is stable and adjustable in 36–60 V. The experimental results show that the DC-DC converter based on the input voltage sharing and the double closed-loop control can not only realize the power supply of high current output, but also realize the power balance between the modules.