| Title |
A Control Method for Bidirectional DC-DC Converter for HESS to Improve the Life of LEVs |
| Authors |
A-Rang Lim ; Hyun-Bin Kim ; Jong-Soo Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2018.32.12.001 |
| Keywords |
Battery ; Supercapacitor ; Hybrid Energy Storage System ; LEVs ; Bidirectional DC-DC Converter ; Internal Resistance ; Power Density |
| Abstract |
In this paper, a new control method of a bidirectional DC-DC converter for HESS is proposed. The control method of the conventional bidirectional DC-DC converter has a short charging period of the supercapacitor because the operation of the supercapacitor is not considered SOC 50% below. This paper adds a sequence considering the SOC of the supercapacitor to improve the charge cycle of the supercapacitor and minimize battery over-discharge. Also, this paper proposes a control algorithm that can control the discharge current of the battery and supercapacitor by dividing the operation mode of LEVs into constant speed mode and rapid acceleration mode. |