Estimating the state of charge of lithium batteries based on fractional-order sliding-mode observer

Chun Yin Chun Yin,Yangquan Chen Yangquan Chen,Shou-Ming Zhong Shou-Ming Zhong,Qishui Zhong Qishui Zhong

doi:10.1109/icfda.2014.6967363

Estimating the state of charge of lithium batteries based on fractional-order sliding-mode observer

Chun Yin Chun Yin, Yangquan Chen Yangquan Chen + Show 2 more

https://doi.org/10.1109/icfda.2014.6967363

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Publication Date: Jun 1, 2014

Citations: 6

Affiliation: University of Electronic Science and Technology of China, Embedded Systems (United States), University of California, Merced

#Fractional-order Sliding-mode Observer #Sliding-mode Observer + Show 8 more

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Abstract

This paper considers estimating the state-of-charge (SOC) for lithium-ion batteries, that utilizes a fractional-order (FO) sliding-mode observer (SMO) is investigated. The capacity loss and deterioration resistance can be estimated by the FO SMO. Based on Mittag-Leffler stability theory, the FO SMO is designed and analyzed. The convergence property about FO SMO is shown by utilizing the Lyanunov-Krasovskii function. A key analysis technique is enabled by proposed a fundamental boundedness lemma. The proposed method is easily applied to SOC in order to illustrate robust control properties against system's errors. The simulation examples are used to illustrate effectiveness of the proposed control scheme.

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