摘要中频炉具有加热效率高、易于实现机械化及可控性好、速度快、自动化等优点。中频电源是本设计的主要部分,它由整流电路、滤波电路和逆变电路组成。开关器件采用IGBT,控制器采用DSP芯片,并对DSP最小系统进行了较全面的介绍。40561
通过对串联谐振型电路和并联谐振型电路的比较以及它们各自优劣势的说明,最终主电路中的逆变电路选择串联谐振型电路,论文还分别对系统硬件部分的主电路、控制电路、驱动电路、采样电路和保护电路进行了介绍与说明。在进行软件设计时,论文给出了软件设计流程图。
新型中频电源能够实现复杂的控制,具有电路简单,通用及控制灵活等优点。它在人们的生活及生产中起到了不可动摇的作用。如果中频电源的自身特性变化,电路的变化可以通过修改软件的参数实现,便于实现集中控制。
毕业论文关键词: 中频电源 逆变电路 IGBT DSP
Abstract IF furnace has the advantages of high heating efficiency, being easy to implement mechanization and good controllability, high speed, automation and so on.
Induction heating power supply is a major part of the design, which consists of a rectifier circuit, filter circuit and an inverter circuit. Switching device uses IGBT and controller uses DSP chips, and giving a more comprehensive description of the minimum system DSP.
By comparing the series resonant circuit and parallel resonant circuits and their respective advantages and disadvantages of explanation, the main circuit of the inverter circuit selects series resonant circuit, the paper also were part of the primary circuit of the system hardware, the control circuit , drive circuit, sampling circuit and the protection circuit are introduced and explained. During software design, the paper gives the software flow.
The new Induction heating power supply to implement complex control circuit has a simple, universal and flexible control. It played an unshakable role in people's lives and production. If you own characteristic frequency power changes, changes in the circuit can be realized by modifying the parameters of software and It is easy to implement centralized control.
Key words: Induction Heating Power Supply Inverse Circuit IGBT DSP
目 录
摘 要 I
Abstract II
1 绪 论 1
1.1 中频炉概述 1
1.2 中频电源的发展和现状 1
1.3 控制器的选择 2
2 中频电源的实现方案 3
2.1 串并联谐振电路的比较 3
2.2 串联谐振电源工作原理 3
2.3 电路的功率调节原理 4
2.4 课题主要内容以及设计的思路 4
3 中频电源的硬件设计 6
3.1 中频电源的主电路设计 6
3.1.1 主电路的技术参数 6
3.1.2 中频电源主电路图 6
3.1.3 IGBT和续流二极管的选择 11
3.1.4 谐振电阻和谐振电感的计算 12
3.2 控制电路的设计 12
3.2.1 面积等效原理 12
3.2.2 DSP的特点 14
3.2.3 DSP最小系统介绍 14
3.3 驱动电路的设计 15
3.3.1 IGBT对驱动电路的要求 15
3.3.2 IGBT过压的原因及抑制 16
3.3.3 IGBT的过流保护 17 DSP中频炉温度控制系统设计+程序+电路图:http://www.youerw.com/zidonghua/lunwen_38961.html