The maximum power point tracking (MPPT) is a strategy that allows imposing the PV array operation point on the maximum power point (MPP) or close to it under any environmental condition. The conventional incremental conductance (INC) algorithm is the most popular algorithm. But due to the fixed step size, its response speed is low under the rapid change of the solar irradiation level or load resistance. In this paper, a new MPPT technique is proposed to enhance the response speed. It consists of two stages: (1) the computing stage and (2) the regulating stage. The computing stage includes the coarse positioning operation and fine positioning operation. And an initial value of the duty cycle is generated in the computing stage, according to the characteristics of the DC-DC converter and the characteristics of the curve. The regulating stage regulates the duty cycle of the DC-DC converter with a small step size, which can improve the tracking efficiency. And the computing stage can enhance the response speed. A simulation comparison of the proposed MPPT technique with other techniques is carried out in MATLAB/Simulink under different scenarios. The simulation results reveal that the response of the proposed algorithm is 4.6 times faster than that of the INC under these scenarios, and the proposed algorithm has higher efficiency.

中文翻译：

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一种新的 MPPT 技术，可在快速变化的太阳辐照度和负载电阻下进行快速有效的跟踪

最大功率点跟踪 (MPPT) 是一种策略，允许在任何环境条件下将光伏阵列操作点强加于最大功率点 (MPP) 或接近该点。传统的增量电导 (INC) 算法是最流行的算法。但由于步长固定，在太阳辐照度或负载电阻的快速变化下，其响应速度较低。在本文中，提出了一种新的 MPPT 技术来提高响应速度。它包括两个阶段：（1）计算阶段和（2）调节阶段。计算阶段包括粗定位操作和精定位操作。并且在计算阶段根据DC-DC转换器的特性和曲线的特性产生占空比的初始值。调节级以小步长调节DC-DC转换器的占空比，可以提高跟踪效率。并且计算阶段可以提高响应速度。在 MATLAB/Simulink 中在不同场景下对所提出的 MPPT 技术与其他技术进行了仿真比较。仿真结果表明，在这些场景下，该算法的响应速度是INC的4.6倍，并且该算法具有更高的效率。