전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2016년도 추계학술대회 논문집
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- Pages.75-76
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- 2016
리튬인산철 배터리를 위한 새로운 히스테리시스 모델링
A novel OCV Hysteresis Modeling for SOC estimation of Lithium Iron Phosphate battery
- Nguyen, Thanh Tung (Department of Electrical Engineering, Soongsil University) ;
- Khan, Abdul Basit (Department of Electrical Engineering, Soongsil University) ;
- Choi, Woojin (Department of Electrical Engineering, Soongsil University)
- 발행 : 2016.11.25
초록
The relationship of widely used Open circuit Voltage (OCV) versus State of Charge (SOC) is critical for any reliable SOC estimation technique. However, the hysteresis existing in all type of battery which has been come to the market leads this relationship to a complicated one, especially in Lithium Iron Phosphate (LiFePO4) battery. An accurate model for hysteresis phenomenon is essential for a reliable SOC identification. This paper aims to investigate and propose a method for hysteresis modeling. The SOC estimation is done by using Extended Kalman Filter (EKF), the parameter of the battery is modeled by Auto Regressive Exogenous (ARX) and estimated by using Recursive Least Square (RLS) filter to tract each element of the parameter of the model.
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