【作者】 丁世明；

【导师】 安大伟；

【作者基本信息】 天津大学 ， 供热、供燃气、通风与空调工程， 2005， 硕士

【摘要】 光伏发电是太阳能利用技术中的重要分支,光伏产业与技术的发展受到各国的重视,很多国家都把建筑光伏一体化与发展独立光伏系统作为近期的研究计划。本课题针对当前独立户用型系统运行过程得不到及时监测的实际情况,结合信号采集理论,为实验光伏系统增加设计数据采集系统。本系统除完成光伏系统的常规电压、电流数据采集,还实现了无法直接测量的间接量的数据采集,如通过软件计算得出的光伏系统即时输入、输出功率。此外,对于太阳能辐射值的测量,避免了价格昂贵的太阳能辐射仪的测量方法,根据在不同的太阳辐射强度条件下,光伏电池的短路电流与光强成正比的理论基础,通过采集标准光伏电池发电时的电流信号来实现经济、适用的太阳能辐射值的数据采集。本文完成了以单片机为核心的数据采集系统的硬件、软件设计工作,与上位(PC)机相结合,可以实现在光伏系统运行过程中相关参数的测量、计算、显示、存储等功能,为以后的设计研究工作提供实用的数据资料。更多还原

【Abstract】 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.更多还原