ACD 2022 Paper Abstract

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Paper WeA1.3

Immonen, Eero (Turku University of Applied Sciences)

Luenberger observer design for robust estimation of battery state of charge with application to Lithium-Titanate Oxide cells

Scheduled for presentation during the Regular Session "Observers and Estimation" (WeA1), Wednesday, November 16, 2022, 16:40−17:00, MAIN ROOM - E406

16th European Workshop on Advanced Control and Diagnosis, November 16-18, 2022, Nancy, France

This information is tentative and subject to change. Compiled on March 28, 2024

Keywords Transportation Systems, Condition Monitoring, Model-Based Diagnosis of Linear

Abstract

The State of Charge (SoC) of a lithium-ion battery cannot be measured directly, and its estimation is one of the main challenges in electrification of transport, among others. In this article, we introduce a systematic methodology for designing Luenberger observers for on-line SoC estimation, based on a given second-order Equivalent Circuit Model (ECM) for the battery. We show how the proposed methodology can be augmented with the Linear Quadratic Regulator (LQR) optimal control framework, resulting in a computationally lightweight state estimator that also displays time optimal convergence. An application to Lithium-Titanate Oxide (LTO) battery cells is presented to illustrate the proposed approach.

 

 

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