| Title |
Dual Battery Pack Charge/Discharge System for ESS using 3-Level NPC AC/DC PWM Converter |
| Authors |
Young-Sang Ko ; Kyung-Min Kang ; Jin-Wook Kang ; Jung-Hyo Lee ; Chung-Yuen Won |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2018.32.10.024 |
| Keywords |
Dual Battery Pack Charger ; 3-Level NPC AC/DC PWM Converter ; Energy Storage System ; SVPWM |
| Abstract |
In this paper, we propose a battery charge-discharge system and control algorithm that can improve the overall efficiency of the system by reducing the power conversion step. The battery charge-discharge system is composed to charge-discharge the dual battery packs by using a neutral point of the 3-Level NPC(Neutral Point Clamped) topology. We designed the 3-Level NPC AC/DC converter of 20kW class for connection with the dual battery packs. In addition, we proposed a system control algorithm to charge-discharge the battery by varying the DC-Link voltage. The proposed system and algorithm are verified through simulation and experiment. |