Comparative Analysis of the Perturb-and-Observe and Incremental Conductance MPPT Methods

This work aims to implement in Matlab and Simulink the perturb-and-observe (P&O) and incremental conductance Maximum Power Point Tracking (MPPT) algorithms that are published in the scientific literature. The main objective is to determine which of these two methods are the most suitable for MPPT control in order to establish an optimal algorithm if is desired undertake analysis of power depending on solar radiation (irradiance) and respectively function of temperature taking into account the modification of change of duty cycle parameter that enter in the MPPT control algorithms of the considered model of photovoltaic (PV) system. The PV system model used for simulation consists of the PV panel, variant subsystem of irradiance, buck converter and variant subsystem of MPPT controller. Considering the optimal rapport between time of simulation, step change response of buck converter and the maximum power obtained, the best result for P&O and incremental conductance MPPT methods are obtained at the step change of duty cycle deltad=8 ms of MPPT controller. The incremental conductance algorithm is superior compared with P&O both at power obtained as well as at step recovery of power and variation of temperature. First are simulated the P&O and incremental conductance algorithms using a step variation of irradiance at ambient temperature and different values of the step change of duty cycle of implemented MPPT algorithms. Afterwards are given the simulation result for two different irradiance and temperature levels at the optimum step change of duty cycle previously established. The simulation results are presented in parallel for both MPPT methods at the same step change of duty cycle.Please cite my paper in your work:I. V. Banu, R. Beniugă and M. Istrate, "Comparative analysis of the perturb-and-observe and incremental conductance MPPT methods," 2013 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED TOPICS IN ELECTRICAL ENGINEERING (ATEE), Bucharest, 2013, pp. 1-4. doi: 10.1109/ATEE.2013.6563483 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6563483&isnumber=6563346

本研究旨在将科学文献中发表的扰动与观测（P&O）及增量导纳最大功率点跟踪（MPPT）算法在 Matlab 和 Simulink 中实现。主要目标在于确定这两种方法中哪一种更适合用于 MPPT 控制，以建立理想的算法，若需对基于太阳辐射（辐照度）和温度（分别考虑占空比参数的变化，该参数进入光伏（PV）系统模型的 MPPT 控制算法）的电力进行分析。用于仿真的 PV 系统模型包括光伏板、辐照度变型子系统、降压转换器和 MPPT 控制器变型子系统。在考虑仿真时间、降压转换器的阶跃响应以及获得的最大功率之间的最佳比例下，P&O 和增量导纳 MPPT 方法在 MPPT 控制器的占空比阶跃变化 deltad=8 ms 时获得了最佳结果。与 P&O 相比，增量导纳算法在获得功率、功率阶跃恢复以及温度变化方面均表现出优越性。首先，使用环境温度下的辐照度阶跃变化和实施 MPPT 算法的占空比阶跃变化的不同值，对 P&O 和增量导纳算法进行了仿真。随后，在先前建立的占空比阶跃变化最佳值下，给出了两种不同辐照度和温度水平下的仿真结果。两种 MPPT 方法在相同的占空比阶跃变化下并行展示了仿真结果。请在我工作中引用我的论文：I. V. Banu, R. Beniugă 和 M. Istrate，'P&O 与增量导纳 MPPT 方法的比较分析'，《2013 第 8 届国际电气工程高级主题研讨会（ATEE）》，布加勒斯特，2013 年，第 1-4 页。doi: 10.1109/ATEE.2013.6563483 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6563483&isnumber=6563346