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A low cost characteristics analyzer of PV module

机译：光伏组件的低成本特性分析仪

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This paper describes construction, development and testing of a low cost PV module characteristics analyzer. A computer-based, fully automatic characteristic analyzer has been designed and developed using locally available components. The system is capable of acquiring current and voltage of PV module by varying the operating point to draw the IV curve and to analyze the module characteristics. In this system, a Pico ADC-16 has been used to convert the analog data into digital. The module current and voltage is changed by using a transistor active load. The operating point of the active load has been changed by the analog output of a DAC and the DAC is driven by a digital counter. A driver program has been developed for the system using C language. Finally, the system was assembled and the characteristics of some PV modules of different power capacity have been studied. It is found that, the system is capable of finding characteristics of PV modules up to the capacity of 75Watt.
机译：本文介绍了低成本PV组件特性分析仪的构建，开发和测试。已经使用本地可用的组件设计和开发了基于计算机的全自动特性分析仪。该系统能够通过改变工作点以绘制IV曲线并分析模块特性来获取PV模块的电流和电压。在该系统中，已使用Pico ADC-16将模拟数据转换为数字。通过使用晶体管有功负载来改变模块的电流和电压。有功负载的工作点已由DAC的模拟输出更改，而DAC由数字计数器驱动。已经为使用C语言的系统开发了一个驱动程序。最后，组装了系统并研究了一些不同功率的光伏组件的特性。结果发现，该系统能够找到容量高达75Watt的PV组件的特性。

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