HUANG Cheng1, HUANG Liang1, LU Ye2, QUAN Shu-hai1, XIE Chang-jun1

(1. College of Automation, Wuhan University of Technology, Wuhan 430070, China;

2. Beijing HTSEE Company Limited, Beijing 100045, China)

 

Abstract: Aiming at optimizing the fuel cell DC/DC converter performance, the control method and output response characters of DC/DC converter were investigated. A new control technique—dynamic evolution control was proposed and applied to an interleaved synchronous Buck converter. After the analysis of converter system and dynamic evolution path, the duty cycle equation based on dynamic evolution control was obtained. Performance of the proposed dynamic evolution control and traditional PI control under step load variation condition was simulated under MatlabSimulink environment. The simulation results indicate that the proposed control method is superior to traditional PI based controller because of fast transient response and good disturbance rejection.

Key words: fuel cell; interleaved synchronous Buck converter; MatlabSimulink; dynamic evolution control(DEC)