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Equivalent circuit parameter identification method of induction heating model

A technology of induction heating and parameter identification, applied in the field of effective circuit parameter identification, induction heating model resistance, inductance calculation, can solve the problem of no secondary side circuit parameter calculation, etc.

Pending Publication Date: 2021-08-13
DALIAN UNIV OF TECH
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Problems solved by technology

For example, the "Approximate analytical solution for induction heating of solid cylinders" document only uses the Bessel function to calculate the equivalent resistance and inductance of graphite to the primary side, and does not specifically calculate the parameters in the secondary side circuit

Method used

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  • Equivalent circuit parameter identification method of induction heating model
  • Equivalent circuit parameter identification method of induction heating model
  • Equivalent circuit parameter identification method of induction heating model

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Embodiment Construction

[0051] In the following, the present invention will be further clarified by taking cold crucible smelting of molten sodium borate glass as an example in conjunction with specific embodiments, and the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0052] A method for calculating the resistance and inductance of an induction heating model, the process parameters figure 1 , including the following steps:

[0053] (1) Build a model.

[0054] In this embodiment, the two-dimensional symmetrical finite element simulation model of the induction heating model is established as shown in Figure 2 (a) and Figure 2 (b), which mainly consists of an induction coil 1, a water cooling tube 2, a crucible melting pool 3, and a crucible base 4 , The crucible wall 5 constitutes.

[0055] The induction coil 1 is located outside the crucible, and its coil height is consistent with the height of th...

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Abstract

The invention belongs to the technical field of structural design of induction heating models, and relates to an equivalent circuit parameter identification method of an induction heating model. Comprising the steps of establishing a two-dimensional symmetric finite element simulation model, distributing materials, setting multiple physical fields and dividing grids, establishing an equivalent circuit model, calculating eddy current energy and analyzing the eddy current energy, replacing the materials, calculating resistance, inductance, mutual inductance and coupling coefficients of the model and verifying a parameter identification result. According to the invention, the working process of electromagnetic induction heating is simulated by adopting finite element calculation software COMSOL, so that the resistance and inductance characteristics of each part are analyzed, and the method has the following advantages that the two-dimensional symmetric model of the water-cooled crucible is established on the basis of considering main parts and peripheral parts, so that the error between a simulation result and actual work is reduced; by calculating system circuit parameters in a simulation state, data guidance is provided for coil turn number design, reactive compensation and application of power supply power in a melting process in actual production of an enterprise; and the experiment cost is saved.

Description

technical field [0001] The invention belongs to the technical field of induction heating structure design, and in particular relates to the calculation of resistance and inductance of induction heating models, in particular to an equivalent circuit parameter identification method of induction heating models. Background technique [0002] Electromagnetic induction melting technology uses high-frequency induction heating to melt the raw material internally. This technology directly heats the raw material and the melt through an alternating electromagnetic field. It is an internal heat source and is a non-contact heating method. It can provide high power density. It has highly flexible selectivity, can work in various carrier gases (air, protective gas, vacuum), has extremely low loss, and does not produce any physical pollution. It is one of the green and environmentally friendly heating processes. At present, high-purity, high-performance refractory metal oxides have a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 王振汪剑波李国锋王宁会
Owner DALIAN UNIV OF TECH
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