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Serial IGBT synchronous control device based on synchronous power supply technology

A technology of synchronous control and synchronous power supply, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as equipment damage, and achieve the effect of avoiding equipment damage and solving voltage unevenness

Active Publication Date: 2017-12-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual operation of these two methods, when there are a large number of IGBTs in series, it will also cause equipment damage due to asynchronous control signals.

Method used

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  • Serial IGBT synchronous control device based on synchronous power supply technology
  • Serial IGBT synchronous control device based on synchronous power supply technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the series IGBT synchronous control device based on synchronous power supply technology includes an IGBT drive module and an IGBT synchronous control module, and the IGBT synchronous control module and the IGBT drive module transmit signals for high-frequency current coupling through coils; The IGBT drive module is used to drive the IGBT to conduct work; the IGBT synchronous control module is used to generate high-frequency current signals to control the IGBT drive module. At least one IGBT driver module is provided. When there are multiple IGBT drive modules, the multiple IGBT drive modules are connected in series, and each IGBT drive module simultaneously receives the high-frequency current signal sent by the IGBT synchronous control module.

Embodiment 2

[0025] Such as figure 2 As shown, the IGBT synchronous control module includes MOSFET Q1, MOSFET Q2, MOSFET Q3, MOSFET Q4, electrolytic capacitor C33, capacitor C34, inductor T4, transformer T5, capacitor C35, resistor R10, resistor R11 and switch S1. The drain of the MOSFET Q1 is connected to the DC power supply, the source of the MOSFET Q1 is connected to the capacitor C34, the other end of the capacitor C34 is connected to the inductor T4, the other end of the inductor T4 is connected to one end of the primary winding of the transformer T5; the other end of the transformer T5 It is connected to the negative pole of the electrolytic capacitor C33, and the positive pole of the electrolytic capacitor C33 is connected to the DC power supply; the drain of the MOSFET Q2 is connected to the line connecting the MOSFET Q1 and the capacitor C34, and the source of the MOSFET Q2 is connected to the transformer T5 and On the line connected to the electrolytic capacitor C33; at both end...

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Abstract

The present invention discloses a serial IGBT synchronous control device based on a synchronous power supply technology. The device comprises an IGBT driving module and an IGBT synchronous control module, and a coil is employed between the IGBT synchronous control module and the IGBT driving module to perform signal transmission of high-frequency current coupling; the IGBT driving module is configured to drive the conduction work of an IGBT; and the IGBT synchronous control module is configured to generate high-frequency current signals to control the IGBT driving module. The serial IGBT synchronous starting problem is solved through the synchronous power supply technology, a plurality of serial IGBTs receives high-frequency current signals emitted by the same IGBT synchronous control module at the same time to realize the synchronous starting of a plurality of IGBT and avoid damaging of a device caused by the non-synchronous condition of control signals.

Description

technical field [0001] The invention relates to the field of circuit control, in particular to a serial IGBT synchronous control device based on synchronous power technology. Background technique [0002] As a more effective method to improve the withstand voltage of IGBTs, the series use of IGBTs is an important technology for the application of power electronics in high-voltage electrical equipment. In the process of IGBT series connection, due to the particularity of the structure and the error of the trigger device, there will be a problem of dynamic voltage unevenness between the series devices in practical applications, which will lead to overvoltage and greatly affect the service life of the device and the working efficiency of the circuit. , causing equipment damage in severe cases. [0003] In order to ensure the reliable operation of IGBTs in series, each IGBT needs to achieve static and dynamic voltage equalization; and dynamic voltage equalization is the most di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M1/088
CPCH02M1/088H02M1/36
Inventor 陈炯马钰文武立平要智宇樊丽霞李晨王磊梁振国窦志强张慧明
Owner STATE GRID CORP OF CHINA