Abstract

This paper proposes a dual-output DC–DC power conversion system based on Photovoltaic (PV) technology. PV panels are connected to a series compensated Buck-Boost Converter (SCBBC) to harvest solar energy, while a sliding mode controller (SMC) ensures maximum power point tracking (MPPT). During the intermediate phase, a synchronized Buck-Boost Converter (SBBC) topology is used to ensure effective charging and discharging of batteries. Additionally, a PI-SMC hybrid control strategy is applied at the back end to the Super Lift Luo Converter (SLLC) to maintain the load voltage at a desired value. A Gravitational Search Algorithm (GSA)-based PI controller controls the input current, while the output voltage is controlled by the outer loop (SMC). We use a single-loop SMC approach to validate the performance of the proposed dual-loop control scheme. According to the presented results, the dual-loop control scheme demonstrated higher dynamic performance in controlling input current and output voltage.

中文翻译：

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使用引力搜索算法调整的 PI 和滑模控制器的基于光伏的双输出 DC-DC 转换器

摘要

本文提出了一种基于光伏（PV）技术的双输出DC-DC功率转换系统。光伏板连接到串联补偿降压-升压转换器 (SCBBC) 以收集太阳能，而滑模控制器 (SMC) 可确保最大功率点跟踪 (MPPT)。在中间阶段，采用同步降压-升压转换器（SBBC）拓扑来确保电池的有效充电和放电。此外，Super Lift Luo 转换器 (SLLC) 的后端应用了 PI-SMC 混合控制策略，以将负载电压维持在所需值。基于引力搜索算法 (GSA) 的 PI 控制器控制输入电流，而输出电压则由外环 (SMC) 控制。我们使用单环 SMC 方法来验证所提出的双环控制方案的性能。根据所给出的结果，双环控制方案在控制输入电流和输出电压方面表现出更高的动态性能。