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- Title
State‐of‐charge estimation of the lithium‐ion battery system with time‐varying parameter for hybrid electric vehicles.
- Authors
Zhang, Yun; Zhang, Chenghui; Zhang, Xianfu
- Abstract
This study addresses the state‐of‐charge (SOC) estimation problem for a lithium‐ion battery system with time‐varying parameter. Although many methods have been proposed for the SOC estimation, the time‐varying parameter problem has not been solved perfectly up to now. In this study, by introducing a novel physical meaning for that the battery terminal current is ℒ2 ‐norm bounded and solving one linear matrix inequality, a robust H∞ filter is proposed for the first time to estimate the SOC of the lithium‐ion battery of hybrid electric vehicles. The proposed method is evaluated by the sequence of urban dynamometer driving schedule test. The experimental results show that the filter proposed here is more accurate and reliable than that without considering the time‐varying parameter.
- Publication
IET Control Theory & Applications (Wiley-Blackwell), 2014, Vol 8, Issue 3, p160
- ISSN
1751-8644
- Publication type
Article
- DOI
10.1049/iet-cta.2013.0082