A novel method for the determination of dynamic resistance for photovoltaic modules

Jen-Cheng Wang, Jyh-Cherng Shieh, Yu-Li Su, Kun-Chang Kuo, Yen-Wei Chang, Yu-Ting Liang, Jui-Jen Chou, Kuo-Chi Liao and Joe-Air Jiang

Energy, 2011, vol. 36, issue 10, 5968-5974

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.

Keywords: Dynamic resistance; Photovoltaic (PV) modules; p-n junction semiconductor; Direct resistance-estimation method (search for similar items in EconPapers)
Date: 2011
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:36:y:2011:i:10:p:5968-5974

DOI: 10.1016/j.energy.2011.08.019

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