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State of Charge Estimation of Ultracapacitor Modules Based on Sage Husa Improved Adaptive Extended Kalman Filter Algorithm

  • School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Conventional ultracapacitor parameter identification and SOC estimation algorithms suffer from slow computation speed and low robustness. To improve state estimation accuracy, this paper proposes a forgetting factor recursive least squares parameter identification algorithm based on a two-branch model. Building upon this foundation, an improved adaptive extended Kalman filter algorithm incorporating Sage-Husa estimation is utilized for SOC estimation, which enhances the robustness of state estimation while reducing computational load. Experimental results verify the stability and accuracy of the proposed algorithm. The results demonstrate that the combined algorithm improves both robustness and computational efficiency while maintaining estimation precision.

Original languageEnglish
Title of host publicationPEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages595-599
Number of pages5
ISBN (Electronic)9798331585495
DOIs
StatePublished - 2025
Externally publishedYes
Event16th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2025 - Nanjing, China
Duration: 28 Mar 2025 → …

Publication series

NamePEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems

Conference

Conference16th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2025
Country/TerritoryChina
CityNanjing
Period28/03/25 → …

Keywords

  • SOC estimation
  • Sage-Husa
  • Ultracapacitor
  • adaptive Kalman filter
  • second-order RC model

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