Evaluating, validating, testing, and performing research on hardware components that are connected to actual solar photovoltaic systems can be challenging; photovoltaic emulators are a common practical approach. In particular, addressing emulation for the crucial research topics of partial shading and cell mismatch is important. Differential diffusion charge redistribution is a switched-capacitor architecture using differential power processing for performing maximum power point tracking with cell-level granularity using only a single module-level converter. Among the prohibitive challenges is preventing damage to the module-embedded integrated circuits for the corner cases during fault and failure testing of connected hardware components including power converters. Emulators not only benefit research, but also product development and manufacturing of hardware components and power converters. This paper investigates a reconfigurable linear emulator with an analog controller for photovoltaic modules configured for differential diffusion charge redistribution. Cell mismatch and partial shading are shown to be equivalent and that the averaged behavior of these switched-capacitor solar photovoltaic modules can be represented by two separate continuous-time circuits that are coupled by feedback and constraints leading to an emulator design that is demonstrated through a hardware prototype.

中文翻译：

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可重构光伏仿真器，用于差分扩散电荷再分配太阳能电池组件

对连接到实际太阳能光伏系统的硬件组件进行评估，验证，测试和进行研究可能是一项挑战。光伏模拟器是一种常见的实用方法。特别地，解决部分阴影和单元格不匹配的关键研究主题的仿真很重要。差分扩散电荷的重新分配是一种使用差分功率处理的开关电容器架构，用于仅使用单个模块级转换器以单元级粒度执行最大功率点跟踪。严峻的挑战之一是，在对连接的硬件组件（包括电源转换器）进行故障和故障测试期间，防止在角落情况下损坏模块嵌入式集成电路。仿真器不仅有益于研究，以及硬件组件和电源转换器的产品开发和制造。本文研究了具有模拟控制器的可重构线性仿真器，该模拟控制器用于配置为差分扩散电荷再分配的光伏模块。电池失配和部分阴影显示为等效，并且这些开关电容器太阳能光伏模块的平均行为可以由两个独立的连续时间电路表示，这些电路通过反馈和约束条件耦合在一起，从而导致仿真器设计通过仿真得到证明。硬件原型。