CAJ | 학술논문

在光伏发电系统中，阴影的遮挡会造成光伏发电系统输出功率及发电量的降低，电源优化器的分散式板载直流电源管理技术能够在一定程度上减少这种损失。本文对顺德中山大学太阳能研究院4个装机容量均为1.01 kWp的光伏并网发电系统进行电源优化器的阴影遮挡对比实验，结果表明，光伏阵列在明显阴影遮挡情况下，安装电源优化器的系统发电量较一般系统高50.7%；在阴影遮挡的大部分时间段内，安装电源优化器系统的实时输出功率较一般系统高出50%以上，优化效果明显。本文的实例分析结果对一些不可避免阴影遮挡的光伏发电系统的设计及安装具有一定的参考价值。
재광복발전계통중，음영적차당회조성광복발전계통수출공솔급발전량적강저，전원우화기적분산식판재직류전원관리기술능구재일정정도상감소저충손실。본문대순덕중산대학태양능연구원4개장궤용량균위1.01 kWp적광복병망발전계통진행전원우화기적음영차당대비실험，결과표명，광복진렬재명현음영차당정황하，안장전원우화기적계통발전량교일반계통고50.7%；재음영차당적대부분시간단내，안장전원우화기계통적실시수출공솔교일반계통고출50%이상，우화효과명현。본문적실례분석결과대일사불가피면음영차당적광복발전계통적설계급안장구유일정적삼고개치。
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.