A Current Sharing Strategy of Paralleled DC-DC Converter Based on Efficiency

For improving energy availability of a power system consisting of paralleled DC-DC converters, high operation efficiency ought to be maintained possibly. According to the efficiency characteristic of DC-DC converter, a current sharing strategy of paralleled converter based on efficiency was presented in this paper. When load changed, the converter modules number paralleled was adjusted, and the paralleled modules operated with right current satisfying module efficiency request. High operation efficiency of paralleled power system was realized by ensuring high efficiency operating modules. Simulation and experiment results shown that the paralleled power system could operate with higher efficiency adopting the current sharing strategy based on efficiency.