Validation of Faster Joint Control Strategy for Battery- and Supercapacitor-Based Energy Storage System

• Published in: IEEE transactions on industrial electronics (1982) Vol. 65; no. 4; pp. 3286 - 3295
• Main Authors: Manandhar, Ujjal, Tummuru, Narsa Reddy, Kollimalla, Sathish Kumar, Ukil, Abhisek, Beng, Gooi Hoay, Chaudhari, Kalpesh
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-04-2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Batteries; Battery control; Control stability; Control systems; DC-DC power converters; Energy management; Energy storage; hybrid energy storage system (HESS); Hybrid systems; Low pass filters; Power dispatch; renewable energy; Renewable energy sources; Restoration; Stability analysis; Strategy; supercapacitor (SC) control; Supercapacitors; Voltage control; Voltage measurement
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2017.2750622

Energy storage system (ESS) is generally used to manage the intermittency of the renewable energy sources (RESs). The proper control strategy is needed to effectively maintain the power balance between the RESs, load demand, and ESS. The conventional control strategy for the hybrid energy storage system (HESS) uses the high-/low-pass filter method for system net power decomposition and the ESS power dispatch. In this paper, a new joint control strategy is proposed for photovoltaic-based dc grid system, with battery and supercapacitor (SC) as a HESS. The new joint control strategy utilizes the uncompensated power from the battery system to increase the performance of the overall HESS. The advantages of the proposed control strategy over the conventional control strategy are faster dc-link voltage restoration and effective power sharing between the battery and the SC. The detailed stability analysis of the proposed control strategy is also presented. The effectiveness of the proposed control strategy over the conventional control strategy is validated with the short-term and long-term experimental studies.