小型三相光伏并网逆变器的设计与仿真

1、. . 山东农业大学毕 业 论 文 小型三相光伏并网逆变器的设计与仿真 院 部 机械与电子工程学院 专业班级 电气工程及其自动化4班 届 次 2015届 学生姓名 张 博 学 号 20110735 指导教师 郗忠梅 副教授 二一五年六月一日装订线. . . 目 录摘要IAbstractII1 绪论11.1 分布式发电是适应我国国情的新能源发电发展趋势11.2 分布式发电的发展对并网逆变器提出的需求11.3 并网逆变器的生产研究现状21.4 本课题的研究内容22 基于PWM技术的三相并网逆变器电路设计22.1 三相并网逆变器的主电路结构32.2 三相并网逆变器主电路基本原理32.3 三相并网逆变器LCL滤波电路设计分析62.3.1 三相并网逆变器输出滤波器的选取62.3.2 有源阻尼控制在LCL型滤波器中的应用73 基于DSP控制的三相并网逆变器控制系统设计93.1数字控制芯片的选择93.2 基于DSP控制的三相并网逆变器控制电路设计103.2.1 IGBT驱动电路的设计分析103.2.2 TMS320F2812芯片电源电路设计113.3 三相光伏并网逆变器的系统控制策略概述123.4

2、三相光伏并网逆变器SPWM程序设计与分析133.4.1 PWM控制的基本原理133.4.2 SPWM波形的实现方式133.4.3 基于DSP2812的SPWM控制软件设计153.5 最大功率点跟踪(MPPT)技术的讨论与应用154 基于MATLAB的三相并网逆变器建模和仿真194.1 利用SIMULINK进行三相并网逆变器的建模194.2 SIMULINK仿真结果的运行和仿真结果分析195 总结和展望215.1 总结215.2 展望21参考文献23致谢24附录25ContentsAbstractII1 Introduction11.1 Distributed generation is the trend of new energy generation to meet the situation of our country.11.2 Demand for grid connected inverter with the development of distributed generation11.3 Research status of production of grid co

3、nnected inverter21.4 The content of this research22 Design of three phase grid connected inverter based on PWM Technology22.1 Main circuit structure of three phase grid connected inverter32.2 Basic principles of main circuit of three phase grid connected inverter32.3 Design and analysis of LCL filter circuit for three phase grid connected inverter62.3.1 Selection of output filter for three phase grid connected inverter62.3.2 Application of active damping control in LCL filter73 Design of control

4、 system for three phase grid connected inverter based on DSP control93.1 Choice of digital control chip93.2 Control circuit design of three phase grid connected inverter based on DSP control103.2.1 Design and analysis of IGBT drive circuit103.2.2 TMS320F2812 chip power supply circuit design113.3 Overview on the control strategy of three phase photovoltaic grid connected inverter123.4 Design and analysis of SPWM program for three phase photovoltaic grid connected inverter133.4.1 Basic principle o

5、f PWM control133.4.2 SPWM waveform implementation133.4.3 Design of SPWM control software based on DSP2812153.5 The discussion and application of maximum power point tracking (MPPT) technology154 Modeling and Simulation of three phase grid connected inverter based on MATLAB194.1 Modeling of three phase grid connected inverter using SIMULINK194.2 Simulation results of SIMULINK simulation results are analyzed195 Summary and Outlook215.1 Summary215.2 Outlook21Reference23Appreciation24Appendix25iii小型

6、三相光伏并网逆变器的设计与仿真张博(山东农业大学 机械与电子工程学院 泰安 271018)摘要：当前，随着人类环保意识的不断增强，随着国家对新能源发电的愈加重视，我国的新能源发电也在蓬勃地发展。其中，风力发电、太阳能发电等分布式发电方式以其清洁、安全、技术相对成熟等优点受到了格外的关注。并网逆变器是实现分布式发电的重要元件，是集电力电子技术、控制技术等多学科于一体的重要设备。作为电气工程及其自动化专业的学生，能够完成这样一个器件的软硬件设计与仿真，是对多学科知识杂糅和研究学习能力的重大考验，也是锻炼和提高综合实践能力的绝佳机会。本论文从小型三相并网逆变器的原理出发，设计出小型三相并网逆变器的基本电路图，利用DSP2812控制，实现脉宽调制，并在Matlab中进行建模仿真，并对仿真结果进行分析评价。希望借此机会，完成本科阶段知识与设计研究能力的杂糅与升华。关键词：三相并网逆变器 PWM技术 DSP控制 MATLAB建模仿真Design and Simulation of Small Three-phase Photovoltaic Grid Connected InverterZhang

7、 Bo(Mechanical & Electrical Engineering College of Shandong Agricultural University, Taian, Shandong 271018)Abstract：As the growing awareness of the human environmental protection, the new energy generation is booming in China as the country paying more attention to the new energy generation. Among them, wind power, solar power and other distributed power generation has attracted great concern for its clean, safe and relatively mature technology. Grid connected inverter is an important component

8、 of distributed generation, and it is an important equipment for power electronics technology and control technology. As students who major in electrical engineering and its automation, being able to complete the software and hardware design and simulation of such a device is not only a major test of multi-disciplinary knowledge of hybridity and studying ability, but also an excellent chance to exercise and improve comprehensive ability of practice. In this paper, starting from the principle of

9、small three-phase grid connected inverter, the small three-phase grid connected inverter circuit was designed; Using DSP2812 control, the pulse width modulation is to be achieved, and the system is modeled and simulated in MATLAB, the simulation results were compared and analyzed. I hope to take this opportunity to complete the undergraduate stage, knowledge and research ability of hybridity and sublimation of design.Keywords: three phase grid connected inverter; PWM technology; DSP control; MATLAB modeling sim

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