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A kind of igbt frequency conversion power supply for intermediate frequency melting furnace

A frequency conversion power supply, melting furnace technology, applied in the direction of electrical components, conversion of equipment structural parts, conversion of AC power input to AC power output, etc.

Active Publication Date: 2018-03-16
株洲弗拉德科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compared with the traditional thyristor induction heating variable frequency power supply, the IGBT induction heating variable frequency power supply has the advantages of remarkable energy saving effect and small harmonic interference to the power grid. Silicon power supply brings great limitations to the application of IGBT induction heating technology

Method used

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  • A kind of igbt frequency conversion power supply for intermediate frequency melting furnace
  • A kind of igbt frequency conversion power supply for intermediate frequency melting furnace
  • A kind of igbt frequency conversion power supply for intermediate frequency melting furnace

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Embodiment Construction

[0027] Referring to the above attached drawings: at figure 1 Among them, a half-bridge series resonant inverter circuit is composed of an equivalent structural unit 100, an induction coil 4, an upper resonant capacitor 5, and a lower resonant capacitor 6; figure 2 Among them, a full-bridge series resonant inverter circuit is composed of two equivalent structural units 100, an induction coil, and a resonant capacitor.

[0028] An IGBT frequency conversion power supply for an intermediate frequency smelting furnace, comprising a frequency conversion power supply cabinet, a diode rectifier bridge 1, a filter capacitor 2, an IGBT module 3, an induction coil 4, an upper resonance capacitor 5 and a lower resonance capacitor 6, characterized in that:

[0029] The variable frequency power supply cabinet is provided with one or more structural units 100 composed of filter capacitors 2, water cooling boxes 15, IGBT modules 3, connecting copper bars and current transformers 13, wherein ...

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Abstract

The invention relates to an IGBT variable-frequency power source for an energy-saving intermediate-frequency smelting furnace. The IGBT variable-frequency power source comprises a power source cabinet, a diode rectifier bridge, filter capacitors, IGBT modules, an induction coil and a resonance capacitor. In the power source cabinet, the filter capacitors, water cooling boxes, the IGBT modules, a connecting copper bar and a current transformer are installed in a square box in an integrated mode to form a structural unit entity. The filter capacitors are arranged in through space above a separation plate of the box, the water cooling boxes for mounting of the IGBT modules are arranged in through space below the separation plate, and the common connecting copper bar is fixed to an insulation supporting block at the top of the box. The IGBT modules and the filter capacitors are composed of more than two entities. Through optimization of the process layout, currents flowing through an IGBT device are even and consistent, and the capacity utilization rate of the IGBT device and the running power of the IGBT induction heating power source are increased; the application range of the IGBT induction heating technology is widened, so that the energy saving and environment friendliness advantages of IGBT induction heating equipment are further achieved.

Description

technical field [0001] The invention relates to an IGBT frequency conversion power supply for an intermediate frequency smelting furnace, which is an IGBT frequency conversion power supply for the field of induction heating, and an IGBT induction heating frequency conversion power supply for an intermediate frequency smelting furnace with the functions of energy saving and environmental protection. Background technique [0002] Compared with the traditional thyristor induction heating variable frequency power supply, the IGBT induction heating variable frequency power supply has the advantages of remarkable energy saving effect and small harmonic interference to the power grid. Silicon power supply brings great limitations to the application of IGBT induction heating technology. Contents of the invention [0003] The purpose of the present invention is to overcome the above defects and provide an IGBT variable frequency power supply for a high-power intermediate frequency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458H02M7/00
CPCH02M5/458H02M7/003
Inventor 言伟雄
Owner 株洲弗拉德科技有限公司
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