A separable induction heating furnace using hybrid spwm modulation technology

Abstract

The invention discloses a separable induction heating furnace applying hybrid SPWM modulation technology, comprising a main area induction furnace control unit, a partition induction power supply control unit, a heating coil, and a furnace body; the heating coil is arranged in the furnace body, and the heating coil It is connected with the zone induction power control unit through cables, and the number of heating coils is the same as that of the zone induction power control unit; the main zone induction furnace control unit issues instructions to the zone induction power control unit through the communication bus, and each zone induction power control unit outputs to the heating coil The current realizes the heating of the materials placed in the furnace body. The control unit of the induction furnace in the main area of ​​the present invention realizes the output of different current parameters according to the requirements of different material lengths, material materials, temperature gradients, heating time, heating efficiency, etc., by controlling the current amplitude, current phase, and current frequency of each partition. So as to meet various complex application requirements.

Description

technical field [0001] The invention belongs to the technical field of induction heating power supply, and in particular relates to a separable induction heating furnace applying hybrid SPWM modulation technology. Background technique [0002] The traditional heating method is heat conduction, that is, a hot object transfers its thermal energy to another object, while induction heating uses alternating current to generate a current vortex, that is, an eddy current, in the coil. The movement of electron holes in a magnetically permeable object generates heat. Induction heating is the fastest heating method known to man. [0003] Induction heating can not only heat the workpiece as a whole, but also heat the workpiece in a targeted manner; it can not only realize deep heat penetration of the workpiece, but also concentrate heating on its surface and surface layer; it can not only directly heat metal materials, but also Indirect heating of non-metallic materials. Induction h...

AI Technical Summary

Problems solved by technology

Because the traditional induction heating power supply is not conducive to multi-zones in the same direction, it is easy to cause low heating efficiency. Therefore, when facing materials with various lengths and diameters, the length of the heating part, the frequency of work, and the heating power of each part cannot be selected.

As a result, the energy utilization rate is not high, gradient heating cannot be realized, and it does not meet the national energy conservation and emission reduction guidelines

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