DocumentCode :
3304011
Title :
Control strategy of multiple energy storages system for DC microgrid
Author :
Hye-Jin Kim ; Chang Yoon Chun ; Kyung-Jun Lee ; Jang, Paul ; Bo-Hyung Cho
Author_Institution :
Sch. of Electr. & Comput. Eng., Seoul Nat. Univ., Seoul, South Korea
fYear :
2015
fDate :
1-5 June 2015
Firstpage :
1750
Lastpage :
1755
Abstract :
This paper proposes a power management strategy of multiple energy storages system for DC microgrid. A static power flow regulation between batteries is accomplished by adopting adaptive droop offset voltage. By addition of offset voltage proportional to state-of-charge (SOC) error, the battery with higher SOC provides more load power while the one with lower SOC provides less. In addition, the dynamic power control allocates power demand for transient between the battery and the supercapacitor. With this method, the battery responds to long-term power demand, while the supercapacitor absorbs only short-term power demand. In this way, the energy storages are managed to equivalently extend the expected lifetime of batteries and reduce the size of supercapacitor. Simulation and experimental results for 48V DC microgrid system verify the proposed control method.
Keywords :
battery management systems; battery storage plants; distributed power generation; power control; power system control; supercapacitors; DC microgrid; adaptive droop offset voltage; battery lifetime; dynamic power control; multiple energy storages control strategy; power management strategy; state-of-charge error; static power flow regulation; supercapacitor; voltage 48 V; Batteries; Microgrids; Power demand; Supercapacitors; System-on-chip; Voltage control; Battery; DC microgrid; Power management; Supercapacitor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on
Conference_Location :
Seoul
Type :
conf
DOI :
10.1109/ICPE.2015.7168014
Filename :
7168014
Link To Document :
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