Examining Contrasting Excitation Modes within Battery Characterisation using Maximum Length Sequences
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Fairweather, Andrew (VxI Power Ltd, Station Road, North Hykeham, Lincoln, LN6 3QY, UK)
Stone, David; Foster, Martin (Electrical Machines and Drives Research Group, Department of Electronic and Electrical Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 4DT, UK)
Abstract:
This paper extends on previous work involving the use of maximum length sequences as tools for parameter estimation within electrochemical batteries[1-4] and comprises a study of the modes of application of a perturbation signal to batteries in the form of discharge, charge and bipolar charge/discharge arrangements driven by a frequency rich signal. Examinations are made of the contemporary techniques, and by the use of experiments over a range of States-of-Charge, the advantages of each method are presented. Using a series of experiments, impedance responses are produced using the tests batteries under perturbation from each of the test modes. Analysis of these results under comparative test conditions allows observations to be made regarding the application of each mode, and proposals are made for the complementary inclusion of the test regimes in a hybrid SoC/SoH prediction system.