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Photoelectric conversion device for IGBT driving signal transmission

A photoelectric conversion device and a technology for driving signals, which are applied in the direction of output power conversion devices, signal transmission systems, non-electrical signal transmission systems, etc., can solve problems such as short circuit, IGBT misconduct, damage to devices, etc., to reduce the impact of electromagnetic interference, Solve the isolation problem and realize the effect of long-distance transmission

Pending Publication Date: 2020-11-17
TIANSHUI ELECTRIC DRIVE RES INST
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AI Technical Summary

Problems solved by technology

The drive signal is a signal sent by the controller to drive the IGBT to work. During the transmission of the drive pulse signal, if the transmission line is long, the interference source will interfere with the pulse signal through the parasitic capacitance and inductance of the transmission line, which may cause Causes false conduction of IGBT, causes short circuit and damages the device

Method used

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  • Photoelectric conversion device for IGBT driving signal transmission
  • Photoelectric conversion device for IGBT driving signal transmission
  • Photoelectric conversion device for IGBT driving signal transmission

Examples

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Embodiment Construction

[0020] Such as Figure 1-Figure 4 As shown, a photoelectric conversion device for IGBT drive signal transmission includes a power filter circuit, a voltage conversion circuit, a pulse signal conversion circuit, and a fault signal conversion circuit. The power filter circuit is connected to the voltage conversion circuit and the pulse signal conversion circuit respectively. It is connected to the power supply terminal of the fault signal conversion circuit, and the voltage conversion circuit is connected to the low-voltage power supply terminal of the pulse signal conversion circuit after reducing the voltage, and the pulse signal conversion circuit inverts and shapes the optical pulse signal sent by the controller Then sent to the IGBT drive circuit, the fault signal conversion circuit converts the fault electrical signal sent by the IGBT drive circuit into an optical signal and sends it to the regulator, the power filter circuit includes a capacitor C3, the capacitor C3 is con...

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Abstract

The invention discloses a photoelectric conversion device for IGBT (Insulated Gate Bipolar Translator) driving signal transmission, which comprises a power supply filter circuit, a voltage conversioncircuit, a pulse signal conversion circuit and a fault signal conversion circuit; the power supply filter circuit is respectively connected with the power supply ends of the voltage conversion circuit, the pulse signal conversion circuit and the fault signal conversion circuit; the voltage conversion circuit reduces the voltage and then is connected with the low-voltage power supply end of the pulse signal conversion circuit, and the pulse signal conversion circuit inverts and shapes an optical pulse signal emitted by the controller and then sends the optical pulse signal to the drive circuitof the IGBT. According to the invention, the problem that in the transmission process, an interference source interferes with a pulse signal through a parasitic capacitor and a parasitic inductor of atransmission line and may cause mis-conduction of an IGBT (Insulated Gate Bipolar Transistor) to cause short circuit and damage a device due to the fact that the current driving pulse signal is transmitted by adopting the transmission line is solved.

Description

technical field [0001] The invention relates to the technical field of IGBT drive signal transmission, in particular to a photoelectric conversion device used for IGBT drive signal transmission. Background technique [0002] With the development of IGBT technology, IGBT has been widely used as a mainstream power device in industries, power grids, transportation, aerospace and other fields. The drive signal is a signal sent by the controller to drive the IGBT to work. During the transmission of the drive pulse signal, if the transmission line is long, the interference source will interfere with the pulse signal through the parasitic capacitance and inductance of the transmission line, which may cause Cause the misconduct of IGBT, cause short circuit and damage the device. Contents of the invention [0003] In view of the above technical problems, the present invention provides a photoelectric conversion device for IGBT drive signal transmission, which can avoid the transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C23/06G08C25/00H02M1/08H03K17/567H02M1/092
CPCG08C23/06G08C25/00H02M1/08H02M1/092H03K17/567
Inventor 孙晓桓柳恒敏吴保宁康主会姚玉玺卢军祥柴正勇蔺满强陈改霞李星燕
Owner TIANSHUI ELECTRIC DRIVE RES INST
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