硕士论文小区光伏电站监控器研究与设计.pdf

华北电力大学(保定)
硕士学位论文
小区光伏电站监控器研究与设计
姓名:范伟
申请学位级别:硕士
专业:计算机科学与技术;计算机应用技术
指导教师:刘淑平
2011-03
华北电力大学硕士学位论文
摘要
随着传统能源的日益枯竭,人们正在努力开发新能源来替代传统能源。太阳能
作为一种新兴能源备受人们的关注。太阳能因其分布广泛,储量丰富,安全洁净,
可再生等特点,成为国际公认的理想新能源。太阳能光伏电站越来越受到人们的关
注,是未来太阳能产业的发展方向。本文分析研究了太阳能光伏发电系统的工作原
理,并对小区光伏电站监控器的软硬件设计与实现做了分析研究。
论文首先给出太阳能光伏发电系统中监控器的总体结构和监控方案,主电路采
用两级式变换结构,前级实现最大功率点跟踪控制,后级采用电压外环、电流内环
双闭环瞬时电流三角波比较方式进行逆变控制;分析太阳能电池的工作原理、最大
功率点跟踪原理和云模型原理,采用基于二维云模型的 MPPT 控制方法实现系统最
大功率点的跟踪控制;分析超级电容器的储能原理和充放电控制,采用超级电容器
组作为储能装置;对逆变电路拓扑结构、软件锁相技术等作了详细的分析和探讨;
最后以 TMS320F2812 芯片作为监控器的监控芯片,详细分析监控器监控系统的各
个功能模块,并给出其数据采集电路、驱动电路、串行通信电路等硬件设计和监控
器的软件设计。
关键词:光伏系统;云模型;最大功率点跟踪;逆变控制;软件锁相环






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华北电力大学硕士学位论文
Abstract
With the increasing depletion of traditional energy sources, people are striving to
develop new energy sources to replace traditional energy sources. Solar energy as an
emerging energy source is mentioned widely by public. Solar energy has been recognized
a new energy accepted by international, because of its widely distributed, abundant, safe,
clean, and renewable and so on. Solar photovoltaic power has received more and more
attention, and will be the future direction of development of photovoltaic industry. This
paper has been analyzed the work principal of solar photovoltaic power, and has a
research of hardware and software design and realization in PV power station monitors.
Firstly, the paper has given the overall structure and monitoring programs of the
monitoring system. The main circuit uses the two-stage transformation structure. The
front stage achieve the maximum power point tracking control, and the bank stage use
triangle parison instantaneous current of voltage outer loop and current inner
loop way inverter control, and analyzes the work principal of solar energy battery,
maximum power point tracking and cloud model theory. Use the principle of MPPT
based on two-dimensional cloud model to achieve the Maximum Power Point Tracking