Abstract The basic P&O technique fails to track the MPP when a rapid change in luminosity and/or temperature has occurred because it cannot distinguish between disturbance of PV voltage and rapid change in environmental conditions. This study presents drawbacks of the basic algorithm and proposes a new variant of P&O with three incremental steps to differentiate the two states mentioned above, thus avoiding divergences in the MPPT path. The suggested MPPT command consists of a modified P&O algorithm applied to a boost converter to overcome poor transient responses and thus optimize the efficiency of the entire PV system. The proposed tracker is built using a 60 W module and its performance is verified by simulations with MATLAB tools considering quick change in the solar irradiance, temperature and load. The test results demonstrate the feasibility and improved performance of the system. The modified P&O technique effectively tracks the MPP in various work situations and capable of increasing energy transfer efficiency by nearly 5%.

中文翻译：

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一种适应环境条件和负载快速变化的扰动观察技术新方法

摘要 当光度和/或温度发生快速变化时，基本的 P&O 技术无法跟踪 MPP，因为它无法区分 PV 电压的扰动和环境条件的快速变化。本研究提出了基本算法的缺点，并提出了一种新的 P&O 变体，它具有三个增量步骤来区分上述两种状态，从而避免 MPPT 路径中的分歧。建议的 MPPT 命令包括应用于升压转换器的改进 P&O 算法，以克服不良的瞬态响应，从而优化整个光伏系统的效率。所提出的跟踪器是使用 60 W 模块构建的，其性能通过使用 MATLAB 工具进行的仿真验证，考虑到太阳辐照度、温度和负载的快速变化。测试结果证明了系统的可行性和改进的性能。改进后的 P&O 技术有效地跟踪了各种工作情况下的 MPP，能够将能量传输效率提高近 5%。