Research on Four-Phase Interleaved Step-Up DC/DC Converter for High-Power Charging System

Intended for the high voltage gain, high efficiency and stable long-term operation of DC/DC converters for high-power charging system, a topology for four-phase interleaved DC/DC converters for high-power charging is proposed. Compared with traditional boost converter topology, the proposed topology Improve system efficiency greatly under the premise of ensuring the boost ratio. Experimental results show that the maximum efficiency of the converter reaches 95.37%. Compared with traditional boost converters, the proposed converter offers obvious advantages in efficiency under the conditions that the output voltage and load are variable.