A Comprehensive Multi-functional Controller for Hybrid Energy Storage Systems in DC Microgrids
A Comprehensive Multi-functional Controller for Hybrid Energy Storage Systems in DC Microgrids
Date
2023-02-09
Authors
Lin, Xin
Zamora, Ramon
Baguley, Craig A
Supervisor
Item type
Journal Article
Degree name
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Description
This article proposes a comprehensive multi-functional controller for a hybrid energy storage system (HESS), including a battery and supercapacitor (SC). In the presented method, a V -d P /dt is proposed to control the output power of the battery converter with a slow dynamic response. The traditional V - P droop is employed to regulate the SC converter to give a fast response. The dc bus voltage can be maintained in a safe range by the SC converter control so that no voltage recovery loop is required. Hence, the order of the overall control system and the complexity of parameter design can be reduced. In addition, a novel consensus-based voltage compensator is proposed to achieve the state of charge (SoC) balance and accurate power sharing among batteries. Then, an SoC restoration of the SC is used to address the leakage current and ensure sufficient energy for future use. Next, a power management scheme (PMS) is proposed to protect the batteries from over-use under different operating modes. Finally, the output impedance characteristics, control system design, and stability analysis are elaborated. The processor in the loop (PIL) simulation results verified the effectiveness and feasibility of the proposed control method.
Keywords
7 Affordable and Clean Energy , 08 Information and Computing Sciences , 09 Engineering
Source
IEEE Transactions on Industry Applications, ISSN: 0093-9994 (Print); 1939-9367 (Online), Institute of Electrical and Electronics Engineers (IEEE), PP(99), 1-9. doi: 10.1109/tia.2023.3243601
Publisher's version
Rights statement
Copyright © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.