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<p>This article introduces a comprehensive dual-closed-loop control method for an optimized battery charger regulator system with applications in nanosatellites. The control structure under consideration includes two control techniques. In order to achieve robust maximum power point tracking, the first control loop uses a super-twisting sliding mode controller compared with an input voltage regulation method based on the Perturb and Observe (P&amp;O) technique. A review of PID and super-twisting algorithms is provided for the second control loop, which deals with output voltage regulation. Using an Arduino Mega platform and a buck converter with a 40 kilohertz switching frequency, the system is configured to convert a photovoltaic input voltage into a stable output voltage. A comprehensive evaluation of the control techniques is carried out in terms of dynamic response, tracking accuracy, complexity of implementation, and efficiency for various temperature operating conditions. Experimental results demonstrate improved performance in terms of precise voltage regulation and optimal power extraction in constant-current mode. With smooth transitions between modes of operation in CV charging, the solution proposed here has significant improvements in power management efficiency in constrained nanosatellite platforms with limited energy budgets.</p>

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Dual-closed-loop super-twisting control for a nanosatellite battery charger regulator (BCR)

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Fethi Metehri,
  • Mohammed Beldjehem,
  • Messaoud Bensaada,
  • Faiza Arezki

摘要

This article introduces a comprehensive dual-closed-loop control method for an optimized battery charger regulator system with applications in nanosatellites. The control structure under consideration includes two control techniques. In order to achieve robust maximum power point tracking, the first control loop uses a super-twisting sliding mode controller compared with an input voltage regulation method based on the Perturb and Observe (P&O) technique. A review of PID and super-twisting algorithms is provided for the second control loop, which deals with output voltage regulation. Using an Arduino Mega platform and a buck converter with a 40 kilohertz switching frequency, the system is configured to convert a photovoltaic input voltage into a stable output voltage. A comprehensive evaluation of the control techniques is carried out in terms of dynamic response, tracking accuracy, complexity of implementation, and efficiency for various temperature operating conditions. Experimental results demonstrate improved performance in terms of precise voltage regulation and optimal power extraction in constant-current mode. With smooth transitions between modes of operation in CV charging, the solution proposed here has significant improvements in power management efficiency in constrained nanosatellite platforms with limited energy budgets.