Improvement of Maximum Power Point Tracking Perturb and Observe Algorithm for a Standalone Solar Photovoltaic System

作     者：Awan, Muhammad Mateen Afzal Awan, Fahim Gohar 

作者机构：Univ Engn & Technol Ctr Energy Res & Dev Lahore Pakistan Univ Engn & Technol Dept Elect Engn Lahore Pakistan 

出 版 物：《MEHRAN UNIVERSITY RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY》 

年 卷 期：2017年第36卷第3期

页      面：501-510页

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 

主　　题：Photovoltaic Cell Maximum Power Point Tracking Perturb and Observe Algorithm Decrease and Fix Method 

摘      要：Extraction of maximum power from PV (Photovoltaic) cell is necessary to make the PV system efficient. Maximum power can be achieved by operating the system at MPP (Maximum Power Point) (taking the operating point of PV panel to MPP) and for this purpose MPPT (Maximum Power Point Trackers) are used. There are many tracking algorithms/methods used by these trackers which includes incremental conductance, constant voltage method, constant current method, short circuit current method, PAO (Perturb and Observe) method, and open circuit voltage method but PAO is the mostly used algorithm because it is simple and easy to implement. PAO algorithm has some drawbacks, one is low tracking speed under rapid changing weather conditions and second is oscillations of PV systems operating point around MPP. Little improvement is achieved in past papers regarding these issues. In this paper, a new method named Decrease and Fix method is successfully introduced as improvement in PAO algorithm to overcome these issues of tracking speed and oscillations. Decrease and fix method is the first successful attempt with PAO algorithm for stability achievement and speeding up of tracking process in photovoltaic system. Complete standalone photovoltaic system s model with improved perturb and observe algorithm is simulated in MATLAB Simulink.