1、 xx 大学学士学位论文 - I - 节能型嵌入式管道加热器 摘要 随着现代逆变技术的发展和电磁加热技术的逐渐成熟，一种新型的节能型嵌入式管道加热器，即高频 电磁 感应加热器已进入了研究发展阶段。 节能型嵌入式管道加热器是基于电磁感应加热原理，先将电网的工频交流电通过整流、滤波变成单向脉冲的直流电， 随后由控制电路将直流电变成高频交流电，高频交流电作用于励磁线圈。励磁线圈是输出加热功率的元件，它是一个形状特殊的电感器。 它在 IGBT 管高速且周期性的导通与截止状态下，不断从电源得到因自身损耗而消耗的能量，于是在励磁线圈的周围形成高频磁场，该磁场通过绝缘层 作用于的不锈钢 金属内胆，产生大量涡
2、流，从而迅速加热。由电磁 感应 加热原理可以看到，这种加热方式实现了真正的隔离加热，高效节能、安全是该加热器最大的特点。 本文首先详细介绍了 节能型嵌入式管道 加热器的 感应加热 原理，然后提出了 加热器的整体设计思路，重点设计了高频感应加热器的主电路 逆变单元和基于 HT46R64 型单片机的智能控 制单元，其中包括半桥谐振， IGBT 驱动 ，IGBT 温度检测 ， 加热温度检测 ，过流、欠压、过压保护， 漏电检测与保护， 蜂鸣器驱动等电路 。 关键词 感应加热 ； 集肤效应 ； 高频 ； 逆变器 xx 大学学士学位论文 - II - Energy-saving Heater of Emb
3、edded Pipeline Abstract With the development of modern inverter technique and the mature of electromagnetic heating technique， a new electric energy-saving heater of embedded pipeline which is called high-frequency electromagnetic heater is in researching. The energy-saving heater of embedded pipeli
4、ne is based on the theory of electromagnetic inductive heating. First, it changes the power frequency alternating current into one-way pulsed direct current through rectifying and filtering. Then, it changes direct current into high-frequency alternating current through controlling circuit. The high
5、-frequency current acts on field coil, which is the element for output power of heating. It is all inductor with a special shape. The high-frequency keeps on obtaining the power consumed by itself under the IGBT s frequently getting through and cutting off Therefore， the high-frequency magnetic fiel
6、d is formed around the field coil. This magnetic field acts inside of the stainless steel metal through insulator, which generates a mount of vortex flow, leading the temperature rising rapidly. Through the theory of electromagnetic inductive heating we can find that it realizes the truly separation
7、 And high performance of energy saving and safety is the most important feature of this heater. First, this topic introduces the theory of electromagnetic inductive heating of the energy-saving heater of embedded pipeline. Then, it proposes the integrated design concept of the heater. The heater is
8、designed mainly on the major electric circuit, the inverter unit and intelligent control unit based on the HT46R64 type SCM, including the circuit of half-bridge resonant, IGBT driver, IGBT temperature detect, heating temperature detect, overcurrent protect, undervoltage and overvoltage protect, leakage detect and protect, buzzer driver and so on. Keywords Induction heating； Skin effect； High frequency； Inverter
