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首页> 外文期刊>IEEE Transactions on Energy Conversion >Voltage and Current Reference Based MPPT Under Rapidly Changing Irradiance and Load Resistance
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Voltage and Current Reference Based MPPT Under Rapidly Changing Irradiance and Load Resistance

机译：基于电压和电流参考的MPPT在快速变化的辐照度和负载电阻下

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摘要

This paper formulates a maximum power point tracking (MPPT) technique that accurately tracks the maximum power point of photovoltaic (PV), which undergoes simultaneous or independent sudden changes in load resistance and irradiance. The proposed algorithm is fundamentally divided into three parts; current and voltage perturbation algorithm (IPA/VPA), perturbation step-size reduction algorithm (PSSRA) and a deviation avoidance loop. The use of dual perturbation parameters using IPA and VPA ensures high tracking speed. PSSRA iteratively reduces the perturbation step-size of IPA and VPA and helps in reducing the power oscillations around MPP. Finally, a deviation avoidance loop is developed to detect a change in irradiance by examining the sign of the slope of the two power curves, namely P-V and P-I. The algorithm compares the per unit change in voltage and current of PV, to determine a simultaneous change in both irradiance and load resistance. The proposed algorithm is compared with two recently developed MPPT algorithms. The results show that the proposed technique can track the MPP with high speed and low steady-state oscillations and does not deviate from the MPP tracking path regardless of fast changes in irradiance and load resistance.
机译：本文配合了最大功率点跟踪（MPPT）技术，可以精确地跟踪光伏（PV）的最大功率点，该电压（PV）经历载荷电阻和辐照度的同时或独立的突然变化。所提出的算法基本上分为三个部分;电流和电压扰动算法（IPA / VPA），扰动阶梯大小还原算法（PSSRA）和偏差循环。使用IPA和VPA的双扰动参数可确保高跟踪速度。 PSSRA迭代地降低了IPA和VPA的扰动步长，并有助于减少MPP周围的功率振荡。最后，开发了一种偏离避免环来通过检查两个功率曲线的斜率的符号来检测辐照度的变化，即P-V和P-i。该算法比较PV电压和电流的单位变化，以确定辐照度和负载电阻的同时变化。该算法与最近开发的MPPT算法进行了比较。结果表明，所提出的技术可以跟踪高速和低稳态振荡的MPP，不偏离MPP跟踪路径，无论辐照度和负载电阻的快速变化如何。

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