小型三相光伏并网逆变器的设计与仿真

毕业设计（论文）小型三相光伏并网逆变器的设计与仿真

学院名称学院名称

专业名称专业名称

学生学号学生学号

学生姓名学生姓名

指导教师教授姓名

助理指导老师老师姓名

202 年月

目录

摘要................................................................................................................................. I Abstract .......................................................................................................................... I I 1绪论. (1)

1.1分布式发电是适应我国国情的新能源发电发展趋势 (1)

1.2分布式发电的发展对并网逆变器提出的需求 (1)

1.3并网逆变器的生产研究现状 (2)

1.4本课题的研究内容 (2)

2基于PWM技术的三相并网逆变器电路设计 (2)

2.1三相并网逆变器的主电路结构 (3)

2.2三相并网逆变器主电路基本原理 (3)

2.3三相并网逆变器LCL滤波电路设计分析 (6)

2.3.1三相并网逆变器输出滤波器的选取 (6)

2.3.2有源阻尼控制在LCL型滤波器中的应用 (7)

3基于DSP控制的三相并网逆变器控制系统设计 (9)

3.1数字控制芯片的选择 (9)

3.2基于DSP控制的三相并网逆变器控制电路设计 (10)

3.2.1IGBT驱动电路的设计分析 (10)

3.2.2TMS320F2812芯片电源电路设计 (11)

3.3三相光伏并网逆变器的系统控制策略概述 (12)

3.4三相光伏并网逆变器SPWM程序设计与分析 (13)

3.4.1PWM控制的基本原理 (13)

3.4.2SPWM波形的实现方式 (13)

3.4.3基于DSP2812的SPWM控制软件设计 (15)

3.5最大功率点跟踪(MPPT)技术的讨论与应用 (15)

4基于MATLAB的三相并网逆变器建模和仿真 (19)

4.1利用SIMULINK进行三相并网逆变器的建模 (19)

4.2SIMULINK仿真结果的运行和仿真结果分析 (19)

5总结和展望 (21)

5.1总结 (21)

5.2展望 (21)

参考文献 (23)

致谢 (24)

附录 (25)

Contents

Abstract .......................................................................................................................... I I 1Introduction.. (1)

1.1Distributed generation is the trend of new energy generation to meet the

situation of our country (1)

1.2Demand for grid connected inverter with the development of distributed

generation (1)

1.3Research status of production of grid connected inverter (2)

1.4The content of this research (2)

2Design of three phase grid connected inverter based on PWM Technology (2)

2.1Main circuit structure of three phase grid connected inverter (3)

2.2Basic principles of main circuit of three phase grid connected inverter (3)

2.3Design and analysis of LCL filter circuit for three phase grid connected

inverter (6)

2.3.1Selection of output filter for three phase grid connected inverter (6)

2.3.2Application of active damping control in LCL filter (7)

3Design of control system for three phase grid connected inverter based on DSP control (9)

3.1Choice of digital control chip (9)

3.2Control circuit design of three phase grid connected inverter based on DSP

control (10)

3.2.1Design and analysis of IGBT drive circuit (10)

3.2.2TMS320F2812chip power supply circuit design (11)

3.3Overview on the control strategy of three phase photovoltaic grid connected

inverter (12)

3.4Design and analysis of SPWM program for three phase photovoltaic grid

connected inverter (13)

3.4.1Basic principle of PWM control (13)

3.4.2SPWM waveform implementation (13)

3.4.3Design of SPWM control software based on DSP2812 (15)

3.5The discussion and application of maximum power point tracking(MPPT)

technology (15)

4Modeling and Simulation of three phase grid connected inverter based on MATLAB (19)

4.1Modeling of three phase grid connected inverter using SIMULINK (19)

4.2Simulation results of SIMULINK simulation results are analyzed (19)

5Summary and Outlook (21)