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首页> 外文期刊>Journal of power electronics >Variable Step Size Maximum Power Point Tracker Using a Single Variable for Stand-alone Battery Storage PV Systems
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Variable Step Size Maximum Power Point Tracker Using a Single Variable for Stand-alone Battery Storage PV Systems

机译：使用单个变量的可变步长最大功率点跟踪器，用于独立电池存储光伏系统

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摘要

The subject of variable step size maximum power point tracking (MPPT) algorithms has been addressed in the literature. However, most of the addressed algorithms tune the variable step size according to two variables: the photovoltaic (PV) array voltage (V_(PV)) and the PV array current (I_(PV)). Therefore, both the PV array current and voltage have to be measured. Recently, maximum power point trackers that are based on a single variable (I_(PV) or V_(PV)) have received a great deal of attention due to their simplicity and ease of implementation, when compared to other tracking techniques. In this paper, two methods have been proposed to design a variable step size MPPT algorithm using only a single current sensor for stand-alone battery storage PV systems. These methods utilize only the relationship between the PV array measured current and the converter duty cycle (D) to automatically adapt the step change in the duty cycle to reach the maximum power point (MPP) of the PV array. Detailed analyses and flowcharts of the proposed methods are included. Moreover, a comparison has been made between the proposed methods to investigate their performance in the transient and steady states. Finally, experimental results with field programmable gate arrays (FPGAs) are presented to verify the performance of the proposed methods.
机译：可变步长最大功率点跟踪（MPPT）算法的主题已在文献中解决。但是，大多数寻址算法根据两个变量来调整可变步长：光伏（PV）阵列电压（V_（PV））和PV阵列电流（I_（PV））。因此，必须同时测量PV阵列电流和电压。最近，与其他跟踪技术相比，基于单个变量（I_（PV）或V_（PV））的最大功率点跟踪器由于其简单性和易于实现性而受到了广泛的关注。在本文中，已经提出了两种方法来设计独立电池存储PV系统的仅使用单个电流传感器的可变步长MPPT算法。这些方法仅利用PV阵列测得的电流和转换器占空比（D）之间的关系来自动调整占空比的阶跃变化，以达到PV阵列的最大功率点（MPP）。包括所提出方法的详细分析和流程图。此外，已经对所提出的方法进行了比较，以研究它们在瞬态和稳态下的性能。最后，提出了现场可编程门阵列（FPGA）的实验结果，以验证所提出方法的性能。

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