Citation :

Abhishek Baer, 2025. "PCA-Enhanced Residual Monitoring for Fault Detection in Multi-Cell Lithium-Ion Battery Systems within Sustainable Transport Applications" ESP International Journal of Advancements in Science & Technology (ESP-IJAST)  Volume 4, Issue 1: 16-26.

Abstract :

This paper introduces a data-driven anomaly detection framework designed to enhance the safety and reliability of lithium-ion battery packs deployed in large-scale electric transport systems. Leveraging principal component analysis (PCA) and cumulative sum (CUSUM) control charts, the method monitors mean-based residuals of voltage and temperature across cell groups to detect early-stage faults such as internal short circuits, sensor failures, and thermal irregularities. Experimental validation using real-world data from a battery-electric locomotive demonstrates the system’s ability to identify anomalies with deviations as low as 4mV and 0.15°C while maintaining a false- positive rate below 3%. The approach reduces detection time by 56% and missed anomalies by 60% compared to conventional thresholding methods. By integrating real-time fault diagnosis into battery management systems, this work contributes directly to the advancement of safe, durable, and sustainable battery manufacturing and energy storage deployment in heavy-duty electric mobility.

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Keywords :

Anomaly Detection, Battery Safety, Principal Component Analysis, Lithium-Ion Batteries, Fault Diagnosis, Electric Transport, CUSUM Control Chart, Thermal Monitoring.