A novel method for the determination of dynamic resistance for photovoltaic modules
Journal
Energy
Journal Volume
36
Journal Issue
10
Pages
5968-5974
Date Issued
2011
Author(s)
Wang, J.-C.
Shieh, J.-C.
Su, Y.-L.
Kuo, K.-C.
Chang, Y.-W.
Liang, Y.-T.
Chou, J.-J.
Abstract
Obtaining the maximum power output in real time is indispensable to the operation of grid connected photovoltaic (PV) power systems under given atmospheric conditions. Focusing on the resistance effect of the solar cells, we propose a new and simple method to directly determine the dynamic resistance of the PV modules from an irradiated current-voltage characteristic curve. In our method, we develop the ability to determine the dynamic resistance with a combination of finite series- and shunt-connected resistance. A series of experiments, including numerical simulations and field data tests, are conducted to examine the dynamic behavior of the PV modules during power tracking. Experimental results show that the proposed direct resistance-estimation method allows the PV modules to achieve their maximum power and impedance matching under various operation conditions. © 2011 Elsevier Ltd.
Subjects
Direct resistance-estimation method; Dynamic resistance; P-n junction semiconductor; Photovoltaic (PV) modules
SDGs
Other Subjects
Real time systems; Semiconductor junctions; Atmospheric conditions; Direct resistance-estimation method; Dynamic behaviors; Dynamic resistance; Field data; Finite series; Grid-connected; Maximum power; Maximum power output; Operation conditions; P-n junction; Photovoltaic modules; Photovoltaic power systems; Power tracking; PV modules; Real time; SIMPLE method; Photovoltaic effects; data set; electrical resistivity; experimental study; numerical model; photovoltaic system; real time
Type
journal article