TITLE:
Design of Real Time Battery Management Unit for PV-Hybrid System by Application of Coulomb Counting Method
AUTHORS:
Apiwat Ausswamaykin, Boonyang Plangklang
KEYWORDS:
Battery Management System, PV Hybrid Power Supply
JOURNAL NAME:
Energy and Power Engineering,
Vol.6 No.7,
July
25,
2014
ABSTRACT:
This paper presents
a real-time battery management unit designed by applying the Coulomb counting method
and intended for use in an integrated renewable energy system for PV-Hybrid power
supply. Battery management is required to stabilize hybrid systems and extend battery
lifetimes. The battery management unit is divided into three main stages. Firstly,
analysis of the basic components of the battery type used in the system is considered.
Secondly, the state of charge (SOC) estimation method and the deterioration factor
of the battery are analyzed. Finally, the overall battery management system, including
a computer-based measurement and control unit, is constructed. The control system
displays real-time information through LabVIEW 8.5 by estimating the state of charge
through various measurements. The system will issue alerts when malfunctions are
detected, and the operator can analyze and react to the system in real time to stabilize
the system and extend the battery lifetime.