Abstract This paper presents a configuration scheme based multiple bidirectional Cuk converter with a modified salp swarm algorithm (SSA) based maximum power point tracking (MPPT) for photovoltaic (PV) system under partial shading and module mismatching. The proposed scheme is made up of multiple bidirectional PV-Cuk converter (PVCC) modules in a series chain, a novel SSA with dynamic nonlinear w factor (DWSSA) based the distributed maximum power point tracking (MPPT) and a terminal step-up converter for load connection. First of all, the configuration offers the advantage that the PVCC provides a current by pass and can also be controlled to allow two PV panels in the module to track their available maximum power under partial shading or module mismatching. In addition, the DWSSA-MPPT control scheme is used to estimate the voltages corresponding to the maximum power each PV panel can generate under its specific weather conditions. Moreover, a state space model is developed for the PVCC and experimentally validated, and the control strategy for a PV system having more than one PVCC is discussed. Finally, a simulated PV system based the proposed configuration scheme is set up and results are analyzed, which demonstrates that compared with some existing algorithms, the scheme with DWSSA-MPPT method can highly be effective under partial shading and module mismatching.

中文翻译：

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部分遮光和模块失配下多双向PV-Ćuk转换器系统的MPPT使用改进的salp群算法

摘要 本文提出了一种基于多双向Cuk 转换器的配置方案，该转换器采用基于改进的salp 群算法(SSA) 的最大功率点跟踪(MPPT)，适用于部分遮蔽和模块失配的光伏(PV) 系统。所提出的方案由串联链中的多个双向 PV-Cuk 转换器 (PVCC) 模块、基于分布式最大功率点跟踪 (MPPT) 的具有动态非线性 w 因子 (DWSSA) 的新型 SSA 和终端升压转换器组成用于负载连接。首先，该配置的优势在于 PVCC 提供了一个旁路电流，并且还可以被控制以允许模块中的两个 PV 面板在部分阴影或模块不匹配的情况下跟踪它们的可用最大功率。此外，DWSSA-MPPT 控制方案用于估计与每个光伏电池板在其特定天气条件下可以产生的最大功率相对应的电压。此外，还为 PVCC 开发了一个状态空间模型并进行了实验验证，并讨论了具有多个 PVCC 的光伏系统的控制策略。最后，建立了一个基于所提出的配置方案的模拟光伏系统，并分析了结果，表明与现有的一些算法相比，采用 DWSSA-MPPT 方法的方案在部分阴影和模块失配情况下具有很高的有效性。