This paper develops and discusses an improved MPPT approach for temperature variation with fast-tracking speed and reduced steady-state oscillation. This MPPT approach can be added to numerous existing MPPT algorithms in order to enhance their tracking accuracy and response time and to reduce the power loss. The improved MPPT method is fast and accurate to follow the maximum power point under critical temperature conditions without increasing the implementation complexity. The simulation results under different scenarios of temperature and insolation were presented to validate the advantages of the proposed method in terms of tracking efficiency and reduction of power loss at dynamic and steady-state conditions. The simulation results obtained when the proposed MPPT technique was added to different MPPT techniques, namely, perturb and observe (P&O), incremental conductance (INC), and modified MPP-Locus method, show significant enhancements of the MPP tracking performances, where the average efficiency of the conventional P&O, INC, and modified MPP-Locus MPPT methods under all scenarios is presented, respectively, as 98.85%, 98.80%, and 98.81%, whereas the average efficiency of the improved P&O, INC, and modified MPP-Locus MPPT methods is 99.18%, 99.06%, and 99.12%, respectively. Furthermore, the convergence time enhancement of the improved approaches over the conventional P&O, INC, and modified MPP-Locus methods is 2.06, 5.25, and 2.57 milliseconds, respectively; besides, the steady-state power oscillations of the conventional P&O, INC, and modified MPP-Locus MPPT methods are 2, 1, and 0.6 watts, but it is neglected in the case of using the improved approaches. In this study, the MATLAB/Simulink software package was selected for the implementation of the whole PV system.

中文翻译：

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针对光伏系统应用中温度变化的改进最大功率点方法

本文开发并讨论了一种改进的 MPPT 方法，用于具有快速跟踪速度和减少稳态振荡的温度变化。这种 MPPT 方法可以添加到许多现有的 MPPT 算法中，以提高它们的跟踪精度和响应时间并减少功率损耗。改进的 MPPT 方法可以快速准确地跟踪临界温度条件下的最大功率点，而不会增加实现的复杂性。给出了不同温度和日照情况下的仿真结果，以验证所提出的方法在动态和稳态条件下跟踪效率和降低功率损耗方面的优势。将所提出的 MPPT 技术添加到不同的 MPPT 技术中时获得的仿真结果，即，扰动观察 (P&O)、增量电导 (INC) 和改进的 MPP-Locus 方法显示出 MPP 跟踪性能的显着增强，其中传统 P&O、INC 和改进的 MPP-Locus MPPT 方法在所有场景下的平均效率分别表示为 98.85%、98.80% 和 98.81%，而改进的 P&O、INC 和改进的 MPP-Locus MPPT 方法的平均效率分别为 99.18%、99.06% 和 99.12%。此外，与传统 P&O、INC 和改进的 MPP-Locus 方法相比，改进方法的收敛时间分别提高了 2.06、5.25 和 2.57 毫秒；此外，常规 P&O、INC 和改进的 MPP-Locus MPPT 方法的稳态功率振荡为 2、1 和 0.6 瓦，但在使用改进方法的情况下，它被忽略了。本研究选择了MATLAB/Simulink软件包来实现整个光伏系统。