文档介绍：毕业设计
风光互补太阳能路灯的设计
摘要
随着世界能源危机的加剧,世界各国都从两条道路寻找解决能源危机的办法,即:一条是寻求新能源和可再生能源的利用;另外一条就是寻求新的节能技术,提高能源的利用效率。风能作为一种绿色能源,己经成为一种新兴的能源形式,同时太阳能因诸多优势也得到广泛的应用,但两者每天的发电量受天气的影响很大。由于太阳能与风能互补性强,如何充分发挥两者的优势,构造风光互补的新型能源系统有很好的理论及实际意义。
本文对风光互补发电系统进行了设计,系统采用交流母线结构,可以随意扩容,方便其它设备接入。论文主要对风光互补发电系统结构组成、控制器、逆变器、并网控制等进行了设计和研究分析。
论文首先论述了风光互补发电系统的结构组成。重点设计了太阳能光伏发电系统。该系统主要包括DC-DC变换及并网逆变电路.。DC-DC变换采用推挽电路,结构简单,开关管功耗小。DC—DC模块将太阳能电池50V左右的直流转换为400V直流,同时完成最大功率点(MPPT)跟踪。论文详细分析了最大功率点跟踪原理及其分类,采用具有明显优势的电导增量法实现了该功能。论文还对逆变器的构成及并网控制方法作了分析研究。经过比较,逆变器采用单相桥式电路,IGBT为主开关器件。并网控制的关键是控制逆变器输出的电流,使其与电网电压同频、同相。文中介绍了逆变器的工作原理,阐述了并网逆变器的软件实现流程图,分析了同步的关键技术——软件锁相环SPLL技术。
关键词: 风光互补发电系统,并网逆变器,最大功率跟踪。
Wind Solar Street Light Design
Abstract
The wind energy was called a green energy,it through e a newly arisen and important form,at the same time solar energy having many suffer people thoughtful of,but generating electricity of everyday measure to is influence by the wemher very the solar energy and breeze Can be repaired with each other strongly,the pVowind energy system was improved the single system,SO have good theories and actual meaning.
The PV-wind hybrid system is designed in the system used AC i s permi ted to enlarge system as one’S pleases,and Can connect the other equipment thesis also design and analyse position of the PV-Wind Energy system,and the controller,inverter and grid—connected control.
First,the thesis discussed the construction of PV-wind hybrid put great emphasis on designing solar energy solar energy system use TMS3 20F240 DSP of pany to concluded DC—DC convertor and grid—connected DC-DC mold use Push—Pull converter which has simply construction and small on—off power DC/DC mold changes the solar cell voltage from 50V to 400V,plete the task of Maxi mum Power Point Tracking(MPPT).The thesis analyse the principle and classification of MPPT in detail,use Conductance Incr