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%.

当发生亮度和/或温度的快速变化时，基本的P＆O技术无法跟踪MPP，因为它无法区分PV电压的干扰和环境条件的快速变化。这项研究提出了基本算法的弊端，并提出了一种P＆O的新变体，它具有三个增量步骤来区分上述两个状态，从而避免了MPPT路径上的分歧。建议的MPPT命令由应用于升压转换器的改进的P＆O算法组成，以克服较差的瞬态响应，从而优化整个光伏系统的效率。拟议的跟踪器是使用60 W模块构建的，并且考虑到太阳辐照度，温度和负载的快速变化，使用MATLAB工具进行了仿真验证了其性能。测试结果证明了该系统的可行性和改进的性能。改进的P＆O技术可有效跟踪各种工况下的MPP，并能够将能量传输效率提高近5％。