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Photovoltaic module cascaded converters for distributed maximum power point tracking: a review

机译：用于分布式最大功率点跟踪的光伏模块级联转换器：审查

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摘要

Operating photovoltaic (PV) systems under partial shading conditions results in significant power losses. To mitigate partial shading effects, distributed maximum power point tracking (DMPPT) architectures have been proposed. An emerging DMPPT technique represented by PV module cascaded converters (MCCs) has been widely reported in the literature. In this architecture, a DC converter is allocated for each PV module to process and maximise its power. In this sense, mismatch effects are mitigated between PV modules. While MCC architecture has prominent advantages and value-added features, its challenges and limitations cannot be ignored. This study presents a comprehensive review of the state of the art of PV MCC architecture to help readers realise the progress of this DMPPT technique. Several points are extensively discussed and analysed including concept realisation and analysis, DC converter topologies and design optimisation, DMPPT performance limitations, DMPPT control, and protection. The main concepts are reemphasised through a set of simulations. Finally, a list of potential research areas in this field is introduced.
机译：在局部阴影条件下的操作光伏（PV）系统导致显着的功率损耗。为了缓解部分着色效果，提出了分布式最大功率点跟踪（DMPPT）架构。由PV模块级联转换器（MCC）表示的新兴DMPPT技术已被广泛报道文献中。在此架构中，为每个PV模块分配DC转换器以处理并最大化其功率。从这个意义上讲，在光伏模块之间减轻了不匹配的效果。虽然MCC架构具有突出的优势和增值功能，但无法忽视其挑战和限制。本研究提出了对PV MCC架构领域的全面审查，以帮助读者实现这一DMPPT技术的进展。广泛讨论和分析了几个点，包括概念实现和分析，直流转换器拓扑和设计优化，DMPPT性能限制，DMPPT控制和保护。主要概念通过一组模拟来重新形成。最后，介绍了该领域的潜在研究区域列表。

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