工学学士学位论文.doc

工学学士学位论文 单功率光伏水泵驱动器 专业名称 电气工程及其自动化 学生姓名 齐 琳 指导老师 蒋 伟 扬 州 大 学 2010年5月 摘要 水资源和电力资源是制约发展中国家农村和偏远干旱地区发展的重要因素，而这些地区往往拥有丰富的太阳能资源，因此，发展光伏技术并将其用于水泵系统，合理地开发地下水资源，将给这些地区带来巨大生态和经济效益。 本文在现有研究成果基础上，设计了一种基于永磁无刷直流电机的光伏水泵控制系统驱动器。该设计选用一片无刷直流电机控制器UCC3626，三片IR2110驱动芯片和三相MOSFET逆变电路构成其控制驱动电路。并利用开关变换电路对阻抗的变换原理，使得负载的等效阻抗跟随太阳能电池的输出阻抗，使得太阳能电池与负载基本匹配，太阳能电池即工作在最大功率点处，实现最大功率点跟踪。关键词：Abstract Water and electricity are important factors which dominate the development of rural and remote dry regions in developing countries. Statistically, there are abundant solar energy resources available in those regions. Therefore, developing solar based technologies, such as solar powered pumping systems to exploit groundwater, will bring enormous ecological and economical benefits to these regions. In this paper, based on the existing research results, design a kind of photovoltaic pump control system drives which based on permanent brushless dc motor .This design chooses a brushless dc motor controller, UCC3626 , three pieces of IR2110 drive chips and three-phase MOSFET inverter circuits constitute its control drive circuit. And by using switch to impedance transformation of commutation circuit principle, make the equivalent impedance load with solar cells, making the output impedance load of solar cells and basic matching, solar cells in the maximum power point that work in realizing the maximum power point tracking.The sample test, the controller can achieve brushless dc motor accurate commutation, motor starting smoothly, drive the pumps normal operation. The experimental research, summarizes problems related to solar pumps speed for future work, and prospected Keywords：solar water , sensorless BLDC, Inverter circuits， MPPT 目录 摘要 II Abstract III 1. 绪论 1 1.1背景资料 1 1.2发展现状及前景 1 1.3光伏水泵模型 3 2、光伏水泵系统工作原理 4 2.1光伏水泵基本结构与工作参数 4 2.2无刷直流电机的工作原理 5 2.2.1无刷直流电机的结构 5 2.2.2 无刷直流电机工作原理 6 2.2.3 无刷直流电机的数学模型 7 3、光伏水泵系统的解决方案 8 3.1基于感应电机的光伏水泵设计方案 8 3.2基于无刷直流电机