Abstract
This paper proposes an ultrahigh synchronous drive step-up dc-dc converter to improve the low voltage generated by proton exchange membrane fuel cell (PEMFC) with proper duty cycle. Coupled inductor and voltage multiplier technologies are utilized to obtain high voltage gain in the converter. The energy stored in leakage inductor can be recycled by the clamp circuit, reducing the voltage stresses on switches, and improving the efficiency significantly. The operating principles and steady-state analyses in continuous conduction mode are provided in detail. Compared with relevant converters, the proposed converter performs lower voltage stresses on power switches and higher voltage gain. Moreover, to improve the dynamic performance and interference immunity of the proposed converter, the offline fitting strategy using the explicit model predictive control (MPC) laws of neural networks is used. The tracking accuracy of the output voltage is improved, disturbances caused by variable loads are reduced, and superior dynamic response can be achieved. Finally, to verify the feasibility and validate the theoretical analyses, a 200 W laboratory prototype with input voltage 20 V and output voltage 400 V is implemented. The maximum efficiency of the proposed converter is 97.21% and the full load efficiency is 91.67%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
