基于IGBT的感应加热电源设计

文档编号:DQ117   文档字数:17108,页数:32

摘  要

 感应加热电源是利用电磁感应原理把电能转化为热能的设备, 它主要利用半导体功率器件作为核心元器件。相比传统的加热设备，感应加热电源有巨大的优势，以其节能、高效、无污染等优点在现在的工业生产中有极广泛的应用，它的特性也很适合作为轴承加热器的电源。
 本课题要求设计和研制500HZ/1000W的适应大电感负载的感应加热电源，选择以IGBT模块作为开关器件，因其比普通的晶闸管电源更具有技术经济优势。本文主要采用以晶闸管为开关器件的整流电路，并通过稳压滤波得到直流电压，再以IGBT作为开关器件的全桥式串联逆变电路。分析控制电路的结构和原理，选择适合电路的控制电路，根据IGBT的各参数的计算选取，设计合理的保护吸收电路。并尽可能对已有的电路的不足之处予以改进。利用MATLAB的分支产品simulink4对设计电路进行仿真。
 
关键词：感应加热；IGBT模块；电源；串联谐振；控制；逆变

Abstract
 Induction heating power supply is a kind of equipment that makes use of the electromagnetic induction principle convert the electric power as thermal energy, which use semiconductor as the core component. Comparing with the other traditional heating equipment induction heating power supply tremendous advantage，and has an extensive application in the industrial production now. Its peculiarity is suitable be the power supply of the bearing induction heater.
 The dissertation stresses on the design of the main circuit and control circuit for 500HZ/1000W induction heating application .choose the IGBT as the switching devices because of the larger technical and economic advantages than thyristor. It uses to thyristor rectifier circuit for the switching devices, get the DC voltage after Filter Regulator. Finally choose IGBT as switching devices in parallel full bridge inverter circuit. Analysis of the structure and principles of control circuit, select the appropriate circuit control circuit, according to various parameters of IGBT selected by calculated designed protect snubber circuit. As far as possible to refine the existing circuit .  Using MATLAB product named branch simulink4 circuit simulate the already-designed circuit .
 
Keywords：Induction heating; IGBT modules ; power supplies;  series resonance;  control; inverter

目 录 
摘  要 I
Abstract II
1  绪论…………………………………………………………………………………………... 1
1.1感应加热电源研究现状及发展趋势……………………………………………………….…..1
        1.1.1感应加热电源的研究现状………………………………………………………...1
        1.1.2感应加热电源的发展趋势………………………………………………………...2
1.2课题研究的意义和总体工作…………………………………………………………………..3       
1.3文档的目的和内容……………………………………………………………………………..3
2  感应加热电源的结构及工作原理…………………………………………………….…4
2.1感应加热电源原理 …………………………………………………………………………….4
2.2感应加热电源的基本结构………………………………………………………………… .….4
2.3感应加热电源的主电路工作模式……………………………………………………………...5
2.4控制电路的结构 ……………………………………………………………………………….7       
2.5调功控制策略……………………………………………………………………………...……8
3. 感应加热电源的设计……………………………………………………………....9
3.1整流电路设计……………………………………………………………………………………9
3.2滤波环节部分………………………………………………………………………………..…10
3.3逆变器环节    ……………………………………………………………………………   .11
3.4负载……………………………………………………………………………………………..13
4.主电路设计和参数计算…………………………………………………………….15
4.1主电路设计……………………………………………………………………………………..15
4.2参数计算………………………………………………………………………………………..15
 4.2.1整流部分参数计算………………………………………………………………….15
 4.2.2逆变部分参数计算 ……………………………………………………………..….17
4.3控制电路的设计………………………………………………………………………………..18
 4.3.1内部逻辑电路结构分析………………………………………………………..…..19
 4.3.2芯片管脚及其功能介绍…………………………………………………………….20
 4.3.3电流互感器………………………………………………………………………….21
 4.3.4 驱动电路的设计………………………………………………………………..22
4.4MATLABA仿真………………………………………………………………………….….24
5  总结………………………………………………………………………………………..26
致谢…………………………………………………………………………………………….27
参考文献………………………………………………………………………………………28

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