| Title |
Bi-directional DC-DC Converter Design and Control for step-up/step-down |
| Authors |
Su-Jin Jang ; Tae-Won Lee ; Byuong-Kuk Lee ; Chung-Yeun Won ; Soo-Seok Kim |
| Keywords |
Bi-directional converter ; current-fed full bridge ; voltage-fed half bridge |
| Abstract |
The bi-directional converter interfaces the low voltage battery to the inverter dc link of FC generation system. When power flows from the low voltage side (battery: 48[V]) to the high voltage side (dc link: 380[V]), the circuit works in discharge mode (boost) to power the high voltage side load; otherwise, it works in charge mode (buck) to charge the low voltage side battery. In this paper, the 1.5[㎾] active clamp current-fed full bridge converter employing MOSFETs is operated to discharge the battery whereas a voltage-fed half bridge converter employing IGBTs is operated to charge the battery. |