1、 1 感应加热感应加热逆变逆变电源设计电源设计 摘要摘要 感应加热可用于金属熔炼、透热、热处理和焊接等过程，已成为冶金、 国防、机械加工等部门及船舶、飞机、汽车等制造业不可缺少的技术。此外 感应加热正不断的进入人们的家庭生活中，例如电磁炉等都是依靠感应加热 原理工作的。感应加热电源的发展趋势是高频化、大容量化、智能化和绿色 化。目前的高频感应加热电源频率在几百千赫左右技术比较成熟。 本文以串联半桥感应加热电源为研究对象，首先在介绍感应加热的原理 基础上，阐述了感应加热电源的特点、国内外发展状况及应其发展趋势。其 次介绍了串联全桥逆变电路与串联半桥逆变电路的优缺点, 半桥串联谐振逆 变器具有结构
2、简单，控制容易，有良好的经济效益等特点，故此，分析了串 联半桥逆变桥的工作原理。再次，在设计了一个串联半桥逆变电路的基础上， 对各个器件的具体电路参数进行计算，并合理选择元器件。最后，在一台半 桥串联谐振电源上，通过改变整流滤波后的电压，测试了桥臂电压波形，并 对波形进行简要分析，得出感应加热电源应尽量避免空载等实验结论。 关键词关键词：感应加热；串联谐振；半桥串联谐振逆变器；IGBT； 2 A Design Of Induction Heating Power Inverter Abstract Induction heating can be used for metal smelting
3、, diathermy, heat reatment and welding process, the manufacturing sector has become an indispensable technology in metallurgy, defense, machining and other departments and ships, airplanes, cars and so on. Besides induction heating is constantly entering peoples family life, such as induction cooker
4、, etc. are relying on the principle of induction heating work. Induction heating power supply is the development trend of high-frequency, high-capacity, intelligent and green. The current high-frequency induction heating power of about a few hundred kilohertz frequency technology is relatively matur
5、e. In this paper, the series half-bridge induction heating power supply for the study, first principles on the basis of introduction of induction heating, induction heating power supply elaborated characteristics, domestic development and should its development trend. Secondly, it introduces the adv
6、antages and disadvantages of full-bridge inverter circuit in series with a series of half-bridge inverter circuit, half-bridge resonant inverter series has a simple structure, easy to control, good economic returns, etc. Therefore, the inverse analysis of the half-bridge series variable working principle of the bridge. Again, on the basis of a series of half-bridge inverter circuit designed on the specific circuit parameters were calculated for each device, and a reasonable choice of compone
