Title :
High-Efficiency Cascode Forward Converter of Low Power PEMFC System
Author :
Chen, Jiann-Fuh ; Liu, Wei-Shih ; Lin, Ray-Lee ; Liang, Tsomg-Juu ; Liu, Ching-Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
This paper presents a topology of cascode scheme that is different from traditional cascade circuit. A high-efficiency cascode forward converter is proposed, with high voltage gain, low leakage impedance and same control method as conventional converter. In fuel cell system can use the characteristic that compensate the polarization loss of cascode circuit to achieve a steady output voltage. The operational principle and steady-state analysis are described. Finally, a simulation result with a 480 W system output, 20 V-38 V fuel cell DC input and 48 V DC output is presented to demonstrate the performance. It shows that the efficiency of the proposed converter is nearly 96%
Keywords :
DC-DC power convertors; losses; proton exchange membrane fuel cells; 20 to 38 V; 48 V; 480 W; high-efficiency cascode forward converter; leakage impedance; low-power PEMFC system; polarization loss; proton exchange membrane fuel cell system; steady-state analysis; voltage gain; Bridge circuits; Circuit topology; DC-DC power converters; Electrons; Fuel cells; Impedance; Low voltage; Polarization; Power systems; Voltage control; DC/DC converter; cascode; component; forward; fuel cell;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4778007
