This article proposes an improved maximum power point tracking (MPPT) method that features a simple design, and improved efficiency in fast-changing irradiance conditions. The method uses three consecutive measurements and compares the power difference between each two consecutive samples, furthermore the voltage variation between the last two successive samples is observed. According to the obtained result of these comparisons, the algorithm applies the suitable action either increasing or decreasing the voltage. This simple concept allows easy implementation and reduces the implementation cost and calculation burden. Second, the method has a prompt tracking response during fast changes in solar irradiance (e.g., due to passing clouds). The proposed method is validated through experimental tests using solar irradiance profiles according to the EN50530 standard and is compared to the classical Perturb and Observe method. The experimental results show that the proposed MPPT effectively identifies the change in solar irradiance, and maintains high tracking efficiency even in fast-changing conditions.

中文翻译：

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用于快速变化辐照度条件的基于多功率采样的 P&O MPPT，实现简单

本文提出了一种改进的最大功率点跟踪 (MPPT) 方法，该方法设计简单，并在快速变化的辐照度条件下提高了效率。该方法使用三个连续测量并比较每两个连续样本之间的功率差异，此外观察最后两个连续样本之间的电压变化。根据这些比较获得的结果，该算法应用适当的动作来增加或减少电压。这个简单的概念允许容易实现并减少实现成本和计算负担。其次，该方法在太阳辐照度的快速变化期间（例如，由于经过的云）具有迅速的跟踪响应。根据 EN50530 标准，通过使用太阳辐照度分布的实验测试验证了所提出的方法，并与经典的扰动和观察方法进行了比较。实验结果表明，所提出的 MPPT 有效地识别了太阳辐照度的变化，即使在快速变化的条件下也能保持较高的跟踪效率。