MATLAB非隔离式开关电源仿真分析+源代码

摘要开关电源作为现代科技社会电子产品的重要组成部分得到了许多开发，具有体积小效率高的特点从而代替了传统线性稳压电源。在论文设计中使用MATLAB软件中的simulink模块可以实现对电力电子电路进行建模、仿真，可以很形象地展示电路的动态特性，具有简单直观的优点。本文介绍了降压斩波电路构成的非隔离式开关电源电路和这个开关电源的MATLAB仿真分析。主要对开关电源的主电路，控制电路，驱动电路结构进行分析并对电路中的元器件进行参数选择。其中主电路采用了绝缘栅双极型晶体管（IGBT）作为开关管，控制电路由芯片SG3525产生控制信号传输到驱动电路控制IGBT的导通和关断，使控制方式实现脉冲宽度调制（PWM）。然后使用simulink模块对降压斩波电路进行建模仿真，得到输出电压波形图与预期理想输出电压波形进行对比分析，并将输出电感电流波形与理论波形进行对比分析，从而验证所设计的开关电源是不是基本合理。58579
毕业论文关键词：开关电源；降压型斩波电路；DC/DC ；SG3525
Abstract Switching power supply plays an important part of electronic products in the modern technological society and gets a lot of development. At the same time , switching power supply replaces the traditional linear power supply because of it is small and efficient. The simulink module of MATLAB which is used in the design can realize modeling and simulation for the power electronic circuit ,which has a advantage of simple and intuitive. This article describes the non-isolated switching based on the DC/DC step-down chopper circuit and the analysis of simulation for the switching power. The main content of the task is analyzing the main circuit, control circuit and drive circui. In addition to this, selecting parameter for these circuit components. In the main circuit, the insulated gate bipolar transistor (IGBT) is selected as a switch.Then,the chip of SG3525 generate a control signal to the drive circuit to control the switch’s condition. This method also realize Pulse-Width Modulation (PWM). Then using simulink module to model and simulate the step-down chopper circuit and get the output voltage waveform which is compared with theoretical output voltage waveform. Meanwhile, Comparing the output inductor current waveform with the theoretical waveform. Finally, Verifing the design of the switching power supply whether reasonable.
Keywords: Switch power supply; Step-down chopper circuit;DC/DC;SG3525

第一章绪论.1

1.1引言.1

1.2国内外发展状况.2

1.3主要研究内容和方法..2

1.3.1主要研究内容.2

1.3.2研究方法和步骤..3

1.4本课题研究的意义和目的3

第二章MATLAB软件介绍.4

2.1MATLAB总体介绍4

2.2MATLAB在电气工程中的应用4

第三章电路设计原理分析6

3.1降压型DC/DC斩波电路工作原理的分析.6

3.2降压型DC/DC斩波电路的工作状态.7

3.3绝缘栅双极型晶体管（IGBT）的简介和优点..9

3.4降压型斩波电路的控制模式与控制方式..10

3.5非隔离式开关电源设计.10

3.5.1主电路设计..12

3.5.2控制电路设计.13

3.5.3驱动电路设计.17

3.5.4保护电路设计.18

3.6本章小结..19

第四章降压斩波电路的仿真分析.20

4.1电路元器件参数选择20

4.1.1电源模块组（Electricalsources）..20

4.1.2电力电子器件组（PowerElectronics）..20

4.1.3测量模块（Measurements）..22

4.1.4示波器（Scope）..22

4.1.5线路元件（Elements）.23 MATLAB非隔离式开关电源仿真分析+源代码:http://www.youerw.com/zidonghua/lunwen_63574.html