A transformer‐less boost DC‐DC converter with high gain and continuous input current for fuel cell vehicle

Summary

At present, the implementation of fuel cell power generation system in electric vehicles has been widely concerned. But the voltage produced by fuel cells is generally relatively low and cannot be supplied directly to the load or grid. To raise its output voltage, a new single‐switch dc‐dc boost topology is put forward in this article. That converter has some characteristics as below: (1) The common ground structure availably avoids electromagnetic interference and improves the reliability of the system. (2) All power semiconductor devices withstand inferior to half the output voltage. (3) The input current avoids pulsation and small number of switching devices that greatly prolong the service life of the fuel cell. The circuit working principle, steady‐state performance, the design of device parameters, and comparison with similar boost topologies are researched. Finally, a 100‐W experimental platform is set up to validate the above features and guarantee the infallibility of theoretical research.