Coordination Control of Battery Energy Storage System and Supercapacitors for High-Frequency PV Smoothing in Microgrids
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DOI: 10.67571/njeru.2026.010919
Published: February 27, 2026 | Issue: Volume 3, Issue 1
Page No. 9–19
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Email: peterohiero@unicross.edu.ng
1 Department of Electrical & Electronic Engineering Faculty of Engineering University of Cross River State, Calabar.
Received: December 8, 2025 Reviewed: February 10, 2026 Accepted: February 27, 2026
Abstract
The high penetration of Photovoltaic (PV) systems in modern microgrids introduces significant power quality challenges, specifically high-frequency power fluctuations caused by intermittent irradiance and cloud transients. While Battery Energy Storage Systems (BESS) are widely used for energy management, their low power density and limited cycle life make them inadequate for mitigating high-frequency transients. This paper proposes a novel coordinated control strategy for a Hybrid Energy Storage System (HESS) integrating BESS and Supercapacitors (SCs). The proposed configuration employs an Adaptive Frequency-Splitting (AFS) algorithm based on a variable coefficient Low-Pass Filter (LPF). Simulation results demonstrate that the proposed coordination control reduces the battery’s peak current stress by 42.5% and stabilizes the DC bus voltage within a 1.2% deviation range, potentially extending battery cycle life by approximately 29%.
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