Title :
High Step-Up Converter With Three-Winding Coupled Inductor for Fuel Cell Energy Source Applications
Author :
Kuo-Ching Tseng ; Jang-Ting Lin ; Chi-Chih Huang
Author_Institution :
Dept. of Electron. Eng., Nat. Kaohsiung First Univ. of Sci. & Technol., Kaohsiung, Taiwan
Abstract :
This paper presents a high step-up converter for fuel cell energy source applications. The proposed high step-up dc-dc converter is devised for boosting the voltage generated from fuel cell to be a 400-V dc-bus voltage. Through the three-winding coupled inductor and voltage doubler circuit, the proposed converter achieve high step-up voltage gain without large duty cycle. The passive lossless clamped technology not only recycles leakage energy to improve efficiency but also alleviates large voltage spike to limit the voltage stress. Finally, the fuel cell as input voltage source 60-90 V integrated into a 2-kW prototype converter was implemented for performance verification. Under output voltage 400-V operation, the highest efficiency is up to 96.81%, and the full-load efficiency is 91.32%.
Keywords :
DC-DC power convertors; fuel cells; inductors; machine windings; windings; duty cycle; fuel cell energy source; high step-up converter; high step-up dc-dc converter; input voltage source; passive lossless clamped technology; performance verification; power 2 kW; three-winding coupled inductor; voltage 60 V to 90 V; voltage doubler circuit; voltage stress; Capacitors; Fuel cells; Inductors; Renewable energy sources; Stress; Switches; Switching circuits; Coupled inductor; fuel cell energy source applications; high step-up converter;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2309793
