中频感应加热设备的设计--毕业论文设计(2)

中频感应加热设备的设计--毕业论文设计

辽宁工程技术大学

Design of Induction heating power of medium

frequency

Abstract

Induction heating power is equipped with lots of advantages such as high heating efficiency, fast speed ,good controllability, which is prone to make heating of high and partial temperature ，and realize mechanization and automation. At present metal melting, work piece heat penetration, quenching, welding, casting, elbow piece, surface heating processing has been widely applied.

Induction heating of medium frequency and development, current situation, and tendency related technology has been studied，and have made quite comprehensive and in the profound elaboration foundation, this article has carried on the design to main circuit and the inversion control of the 2.5kHz/250kW silicon-controlled rectifier intermediate frequency induction heating power. This design is used for big facility of mechanical heating processing. Structure of rectification circuit is easy, which makes power popularized easily. Three-phase bridge rectification circuit is used in Rectification circuit. Rectification circuit uses feedback control of two closed loop, improving the disadvantages. The foundation for inventing induction heating power of big power and super audio is made.

Key words：Controllable silicon medium power Induction heating Inverter Protect circuit

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