Design of phase-shifted parallel-input/series-output dual inductor-fed push-pull converter for high-power step-up applications

Author

Kang, Jeong-il ; Roh, Chung-Wook ; Moon, Gun-Woo ; Youn, Myung-Joong

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

2

fYear

2001

fDate

2001

Firstpage

1249

Abstract

A new high-power step-up converter based on the phase-shifted parallel-input/series-output (PISO) modular converter with two dual inductor-fed push-pull converters is proposed. It is operated at a constant duty cycle and the output voltage is controlled with a phase-shift between the modules. It shows an output voltage which is high and linear to the control input, and a low switch turn-off stress resulting in a significant improvement in the efficiency. It also shows low ripple contents, fast dynamics, and low root-mean-square (RMS) currents in the output capacitors. The operation and features are analyzed and the mathematical models are derived. The design guidelines of a closed-loop 50 kHz, 400-1200 W, 18-30 Vdc to 310 Vdc prototype and the experimental results are provided to confirm the validity of the proposed converter

Keywords

DC-DC power convertors; inductors; switching circuits; voltage control; 18 to 310 V; 400 to 1200 W; 50 kHz; closed-loop converter; constant duty cycle; dual inductor-fed push-pull converters; fast dynamics; high-power step-up applications; low ripple contents; low root-mean-square currents; low switch turn-off stress; mathematical models; modular converter; output capacitors; output voltage; output voltage control; parallel-input/series-output push-pull converter; phase-shift; phase-shifted dual inductor-fed push-pull converter; step-up converter; Capacitors; Fuel cells; Guidelines; Low voltage; Mathematical model; Prototypes; Stress control; Switches; Switching converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE

Conference_Location

Denver, CO

Print_ISBN

0-7803-7108-9

Type

conf

DOI

10.1109/IECON.2001.975961

Filename

975961