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Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method

An electronic protection and overcurrent technology, applied in the protection of overcurrent response, emergency protection circuit devices, electrical components, etc., can solve the problems of lack of protection, complex control methods, difficult implementation, etc., and achieve a compact structure. , Small size and weight, safe and reliable breaking effect

Active Publication Date: 2012-08-08
武汉长海电力推进和化学电源有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This protection method has complex control methods and is difficult to implement, and the premise of protection is that after the short-circuit current is shared, within the allowable range of a single IGCT, once the short-circuit current is too large, it will not only fail to protect, but will also expand the fault.

Method used

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  • Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method
  • Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method
  • Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method

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Embodiment Construction

[0027] like figure 1 , 2 , Shown in 3 and 4, a high-voltage IGCT overcurrent electronic protection module has a high-voltage high-power switch module 1 fixed on the support 6; an overcurrent detection module 2 fixed on the support 6; fixed on the support 6 The high-frequency overvoltage sampling module 3; the optical drive module 4 installed on the bracket 6; the power module 5 installed on the bracket 6. The high-voltage high-power switch module 1 includes a water-cooled plate radiator 1.1, a high-power switch tube 1.2, a buffer resistor 1.3, a high-frequency absorption capacitor 1.4, a low-inductance power busbar 1.5, and a high-power switch tube drive circuit 1.6. The high-power switch tube 1.2 and the buffer resistor 1.3 are installed on the surface of the water-cooled plate radiator 1.1; the high-power switch tube 1.2, the buffer resistor 1.3 and the high-frequency absorption capacitor 1.4 are connected through the low-sensitivity power busbar 1.5. An overcurrent detect...

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Abstract

The invention relates to an overcurrent electronic protection module for a high-voltage integrated gate commutated thyristor (IGCT) and a short-circuit current protection method, in particular to an electric electronic module for protecting an IGCT apparatus in a voltage source medium-voltage high-power frequency converter. The overcurrent electronic protection module for the high-voltage ICGT comprises a fixing bracket, wherein electronic components, namely, a high-voltage high-power switch module, an overcurrent detection module, a high-frequency overvoltage sampling module, a light drivingmodule and a power supply module are arranged on the fixing bracket. The short-circuit current protection method for the overcurrent electronic protection module for the high-voltage ICGT comprises the following steps of: starting; and operating a high-power switch tube, the high-frequency overvoltage sampling module, the light driving module and the like according to a procedure. The protection module has the advantages of wide protection range, high response speed, reliable breaking, small size, light weight, convenient installation and maintenance and the like.

Description

technical field [0001] The invention relates to a high-voltage IGCT overcurrent electronic protection module and a short-circuit current protection method, in particular to a power electronic module for protecting an IGCT device in a voltage source type medium-voltage high-power frequency converter, and belongs to the technical field of power electronic components. Background technique [0002] For frequency conversion devices controlling motors in medium-voltage and high-power speed control systems, high-power IGCTs are expected to be widely used. However, the IGCT itself does not have the ability to protect against short-circuit overcurrent. When the transient fault current exceeds the maximum turn-off current, the IGCT will not be able to turn off. Therefore, one of the technical difficulties in the high-power frequency conversion device using IGCT as the main power device is the short-circuit protection of the IGCT. At present, the main methods for IGCT short-circuit ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/20H02H3/08
Inventor 彭剑李国栋黄华李瑞昌杨涛
Owner 武汉长海电力推进和化学电源有限公司
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