Inversion driving circuit for IGBT (insulated gate bipolar transistor) induction heating power source

An induction heating power supply and inverter drive technology, applied in the electrical field, can solve problems such as poor anti-overload capability, and achieve the effect of ensuring quality, strong stability and anti-interference performance, and ensuring work reliability.

Inactive Publication Date: 2013-01-02
LUOYANG SHENGHUA INDUCTION HEATING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, IGBT has been widely used due to its advantages of small size, high reliability, low noise, high efficiency, and fast response; but compared with traditional SCR devices, IGBT's anti-overload ability is relatively poor.

Method used

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  • Inversion driving circuit for IGBT (insulated gate bipolar transistor) induction heating power source
  • Inversion driving circuit for IGBT (insulated gate bipolar transistor) induction heating power source
  • Inversion driving circuit for IGBT (insulated gate bipolar transistor) induction heating power source

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Embodiment Construction

[0023] The present invention is described in conjunction with accompanying drawing and specific embodiment:

[0024] like figure 1As shown, an inverter drive circuit of an IGBT induction heating power supply, the inverter drive circuit includes a pulse signal receiving and sorting circuit 2, an isolation circuit 3 and a current amplification circuit 4; the pulse signal receiving and sorting circuit 2 communicate with the main control board of the power supply through an optical fiber to receive the optical pulse signal transmitted by the main control board of the power supply through the optical fiber, and convert the optical pulse signal into an electrical pulse signal; the isolation circuit 3 is connected with the pulse signal receiving and The sorting circuit 2 is connected, and the electric pulse signal is electro-optical and photoelectrically converted to obtain the electric pulse signal for one-way transmission; the current amplification circuit 4 is connected with the ...

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Abstract

The invention belongs to the electrical technical field and provides an inversion driving circuit for an IGBT (insulated gate bipolar transistor) induction heating power source. The inversion driving circuit for the induction heating power source comprises a pulse signal receiving and conditioning circuit (2), an isolating circuit (3) and a current amplifier (4). The pulse signal receiving and conditioning circuit (2) is communicated with an external circuit through optical fibers. The isolating circuit (3) is communicated with the pulse signal receiving and conditioning circuit (2). The current amplifier (4) is communicated with the isolating circuit (3). The inversion driving circuit further comprises an overvoltage protection and du/dt protection circuit (6), a transient suppression circuit (5) and an alarm output circuit (7). By means of the inversion driving circuit for the induction heating power source, quality of driving pulse signals is guaranteed while coupled signals returned from the direction of the IGBT are prevented from interfering operation of the driving circuit; and operational reliability of the IGBT is guaranteed while damage of IGBT devices can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of electrical technology, and relates to a driving technology of an inverter of an induction heating power supply, in particular to an inverter driving circuit of an IGBT induction heating power supply. Background technique [0002] At present, induction heating is widely used in smelting, diathermy, quenching and other fields due to its advantages of high heating efficiency, fast temperature rise, and good controllability. The induction heating power supply is one of its key equipment; in the main circuit of the induction heating power supply , it is necessary to generate alternating current through the inverter circuit. According to different heating production processes, the inverter circuit needs to generate an alternating circuit with adjustable frequency and power control. At present, the devices used in the inverter circuit mainly include SCR, IGBT, MOSFET, etc. . Among them, IGBT has been widely used due to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/092
Inventor 葛运旺张宗杰张刚武超布挺赵旭东常灵香杨帆
Owner LUOYANG SHENGHUA INDUCTION HEATING
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