Cited by 41Advanced Battery Technologies ResearchSpacecraft Design and TechnologyPhotovoltaic System Optimization Techniques

Battery Management System With State-of-Charge and Opportunistic State-of-Health for a Miniaturized Satellite

Aung, Htet, Soon, Jing Jun, Goh, Shu Ting, Lew, Jia Min, Low, Kay-Soon·2020·IEEE Transactions on Aerospace and Electronic Systems

Abstract

The lifespan of a satellite is primarily dependent on its battery performance. Thus, proper management and monitoring of the battery is important. Most miniaturized satellites of cubeSat and nanosatellite primarily rely on battery voltage readings for monitoring and seldom provide battery health status in a satellite. As the voltage readings can be affected by satellite operating conditions such as temperature and battery lifespan, it can give unreliable readings that might jeopardize satellite operation. The availability of the battery health status can prevent unexpected battery failures and provide useful insights into the planning of satellite operations. In this article, the battery management system of a satellite with state-of-charge (SOC) and state-of-health (SOH) monitoring is presented. For SOC estimation, a scaled unscented Kalman filter (UKF) is proposed. When compared to the existing UKF approach, it requires fewer sigma points and the positive weights used in the scaled unscented transform ensure the positive semidefiniteness of the covariance matrix leading to the improved numerical stability of the filter. Conversely, SOH monitoring is achieved by taking advantage of the opportunity arising from the satellite operations. The battery parameters are extracted without artificially injecting charge and discharge pulses. To validate the performance of the BMS, the experimental prelaunch tests and the actual in-flight data of the VELOX-II satellite is used as an example. From the results, the SOC estimation error is approximately 1% and the SOH estimation is consistent with the manufacturer's datasheet.

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Crossref · 10.1109/taes.2019.2958161

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  • Prior state-of-charge estimation work for satellite batteries does not assess typical transient irradiance and temperature profiles found in orbit.

    “However, the authors do not assess it considering typical transient irradiance and temperature profiles found in orbit.”
  • Lower temperature field, charge/discharge current, and end of charge voltage give better battery cycle life.

    “As a rule of thumb, a lower SoC means a worse life cycle, and the lower the temperature field, the charge/discharge current, and the EOCV, the better the cycle life [7,8].”
  • The work of [7] studied state of charge estimation for the battery of satellites, but the authors did not assess it considering typical transient irradiance and temperature profiles found in orbit.

    “On the other hand, the work of [7] studied the state of charge estimation for the battery of satellites, but the authors did not assess it considering typical transient irradiance and temperature profiles found in orbit.”
  • A battery's life cycle is a function of state of charge, temperature, charge/discharge current, and end of charge voltage.

    “A battery's life cycle is a function of diverse factors, mainly: the state of charge (SoC), the temperature, the charge/discharge current, and the end of charge voltage (EOCV).”
  • A lower state of charge means a worse battery life cycle.

    “As a rule of thumb, a lower SoC means a worse life cycle, and the lower the temperature field, the charge/discharge current, and the EOCV, the better the cycle life [7,8].”

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Authors
Aung, H., Soon, J. J., Goh, S. T., Lew, J. M., & Low, K.-S.
Affiliations
  • National University of Singapore (SG)
  • Nanyang Technological University (SG)
Venue
IEEE Transactions on Aerospace and Electronic Systems
Published
2020-08
Volume
56
Issue
4
Pages
2978-2989
ISSN
  • 0018-9251 (ISSN-L)
  • 1557-9603
  • 2371-9877
OpenAlex
W2997478157
Cited by
41
References
46
Citations by year
2026: 3 · 2025: 7 · 2024: 5 · 2023: 11 · 2022: 6 · 2021: 8 · 2020: 1
FWCI
1.71
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Aerospace and Electronic Systems (publishedVersion)
  • National University of Singapore (submittedVersion)
Funders
  • Nanyang Technological University
  • Industry collaboration with Addvalue Technologies Pte. Ltd
Topics
  • Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
  • Physical Sciences › Engineering › Aerospace Engineering › Spacecraft Design and Technology
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Photovoltaic System Optimization Techniques
Keywords
battery management systems, state of charge estimation, state of health monitoring, small satellites, CubeSat, nanosatellites, unscented Kalman filter, satellite power systems

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