Design and Implementation of a Digitally Controlled Photovoltaic System Using Series Connected Buck Converters  

作　　者：Jaouad Tanouti Mohammed Setti Abdelhak Aziz El Mamoun Aziz 

机构地区：[1]Laboratory of Electrical Engineering ＆ Maintenance, Higher School of Technology, Oujda 60000, Morocco

出　　处：《Journal of Environmental Science and Engineering(B)》2012年第4期456-464,共9页环境科学与工程（B）

摘　　要：In PV （photovoltaic） power systems, a MPPT （maximum power point tracking） algorithm is vital in increasing their efficiency. But it is also vital to take into account the non ideal conditions resulting from complex physical environments in such PV power systems. To minimize the degradation of performances caused by these conditions, and therefore adding reliability and robustness, this paper presents an implementation of a digitally controlled system using a topology based on series connected DC-DC buck converters for a stand-alone PV power system applications, operating with local and autonomous controls, to track the maximum power points of PV modules in non ideal conditions. Simulations are carried out by using C-MEX S-functions under MATLAB-SIMULINK environment. A PV system of 1.44 kWc is described and simulation results are presented.

关 键 词：Buck converter boost converter MPPT control photovoltaic power system solar energy. 

分 类 号：TM615[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]