Research And Designing Of Data-Acquiring Equipment For Individual Photovoltaic System

Photovoltaic technology is an important branch of the utility of solar energy.Many counties pay much attention on the development of PV technology and industry.Most of them plan to develop BIPV and individual PV system in the near future.In my subject, in order to solve the problem of the individual household PVsystem nowadays that the course of the system can't be detected in time duringrunning process, taking count of signal-gathering theory, this subject designs adata-acquiring system. In this system, it not only finishes the task of gathering currentand voltage data traditionally but also achieves the goal that collects the parameterswhich can't be measured directly, such as the input powers and output powers, whichcan be calculated by its software. Otherwise, for measuring the quantity of solarradiation, according to the theory that in various condition of solar radiation, theshort-cut current of PV module will be in ratio to the solar radiation intensity, wemeasured the solar radiation intensity through gathering the current of standard PVmodule during its working time. This method is much more economic and effectivethan the traditional method that costs much by using the solar radiation equipment.This paper includes designing work of hardware and software for thedata-acquiring system in which the mcu is the core part. When connected with PC, thesystem can measure, calculate, display and record the data that will offer reliable datamaterials for the future research during the PV system running process.