Advances in New and Renewable Energy >
Experimental Study on the Optimization Effect of the Power Optimizer in Grid-Connected Photovoltaic Generation System
Received date: 2014-03-04
Revised date: 2014-06-16
Online published: 2014-06-30
Shading effect impacts the performance of photovoltaic (PV) system greatly by decreasing the output power and generated energy. The distributed direct current (DC) power management technology of power optimizer is helpful to reduce the loss caused by shading effect to some extent. A series of contrast tests of Power Optimizer are conducted on the four PV systems, which are respectively 1.01 kWp in capacity built at the building platform of Shunde Sun Yat-sen University Institute for Solar Energy. The results showed that the system with power optimizer generates 50.7% more energy than that of without power optimizer under shading. The real time generated power increases more than 50% in most of the periods shaded with shadow. The results of this paper are valuable for the design and installation of some PV system affected by inevitable shading effect.
Key words： photovoltaic; power optimizer; shading; performance comparison
WU Zhen-feng , LI Xiao-gang , CHEN Si-ming , LI Xiao-ping , SUN Yun-lin . Experimental Study on the Optimization Effect of the Power Optimizer in Grid-Connected Photovoltaic Generation System[J]. Advances in New and Renewable Energy, 2014 , 2(3) : 211 -215 . DOI: 10.3969/j.issn.2095-560X.2014.03.008
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