NDLI: VRLA battery state-of-charge estimation in telecommunication power systems

Content Provider	IEEE Xplore Digital Library
Author	Anbuky, A.H. Pascoe, P.E.
Copyright Year	1982
Abstract	This paper presents the logical analysis of valve-regulated lead-acid battery discharge behavior and suggests a model for obtaining estimates of the state of charge (SOC) and reserve time throughout discharge. The basis of the model is the relationship between the discharge voltage and SOC. This relationship is valid for a wide range of discharge rates and ambient temperatures as related to the telecommunications backup power supply application. Due to the robust nature of this relationship, only a single discharge characteristic under nominal operating conditions is required by the model. Case studies reveal that the model enables accuracy in estimation of SOC of better than 10% of actual SOC after discharging 10% of the rated capacity. As the discharge proceeds, the error reduces substantially. A feature of the model is that it is easily adaptable to changes in battery characteristics which occur as a result of extreme stress.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	565
Ending Page	573
Page Count	9
File Size	166254
File Format	PDF
ISSN	02780046
Volume Number	47
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	State estimation Power systems Power system modeling Voltage Emergency power supplies Power system analysis computing Monitoring Temperature Battery charge measurement Testing
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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