Disturbance observer-based finite-time control of a photovoltaic-battery hybrid power system

IF 2 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Iet Generation Transmission & Distribution Pub Date : 2024-08-22 DOI:10.1049/gtd2.13248

Fatemeh Esmaeili, Hamid Reza Koofigar

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Abstract

Herein, the load power control of the stand-alone photovoltaic-battery hybrid power system (HPS) has been investigated. The underlying HPS consists of a boost DC-DC converter, a non-isolated bidirectional half-bridge converter, a photovoltaic (PV) panel, and a battery pack. On the PV side, a disturbance observer-based finite-time terminal sliding mode control (FTSMC) is used to regulate the DC bus to the desired voltage, in the presence of irradiation variation and load changes. On the battery side, the load power control system is constructed, based on a model predictive control (MPC) algorithm, with constraints on state-of-charge (SOC) and maximum current value of the battery to improve the battery life cycle and high reliability of the system. To highlight the benefits of the closed-loop system, the analytical proofs and numerical analysis are presented from a comparative viewpoint. The experimentally derived results, by implementation on TMS320F28335 digital signal processing (DSP), are also presented and discussed for practical justification.

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基于扰动观测器的光伏-电池混合电力系统有限时间控制

本文研究了独立光伏电池混合动力系统（HPS）的负载功率控制。基础 HPS 由升压 DC-DC 转换器、非隔离双向半桥转换器、光伏（PV）面板和电池组组成。在光伏侧，采用基于扰动观测器的有限时间终端滑动模式控制（FTSMC），在辐照变化和负载变化的情况下，将直流母线调节到所需电压。在电池方面，基于模型预测控制（MPC）算法构建了负载功率控制系统，并对电池的充电状态（SOC）和最大电流值进行了限制，以提高电池的使用寿命和系统的高可靠性。为了突出闭环系统的优势，本文从比较的角度介绍了分析证明和数值分析。此外，还介绍了在 TMS320F28335 数字信号处理器 (DSP) 上实现的实验结果，并对其进行了讨论，以说明其实用性。

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来源期刊

Iet Generation Transmission & Distribution 工程技术-工程：电子与电气

CiteScore

6.10

自引率

12.00%

发文量

301

审稿时长

5.4 months

期刊介绍： IET Generation, Transmission & Distribution is intended as a forum for the publication and discussion of current practice and future developments in electric power generation, transmission and distribution. Practical papers in which examples of good present practice can be described and disseminated are particularly sought. Papers of high technical merit relying on mathematical arguments and computation will be considered, but authors are asked to relegate, as far as possible, the details of analysis to an appendix. The scope of IET Generation, Transmission & Distribution includes the following: Design of transmission and distribution systems Operation and control of power generation Power system management, planning and economics Power system operation, protection and control Power system measurement and modelling Computer applications and computational intelligence in power flexible AC or DC transmission systems Special Issues. Current Call for papers: Next Generation of Synchrophasor-based Power System Monitoring, Operation and Control - https://digital-library.theiet.org/files/IET_GTD_CFP_NGSPSMOC.pdf