Rogowski coil for measuring nanosecond pulse current

A technology of Rogowski coils and nanosecond pulses, applied in the direction of measuring current/voltage, measuring electrical variables, measuring devices, etc., can solve the problems of test signal distortion, induction coil inductance and parasitic capacitance, easy to generate self-excited oscillations, etc., to achieve Effect of reducing parasitic inductance and preventing self-oscillation

Inactive Publication Date: 2015-03-25
CNGC INST NO 206 OF CHINA ARMS IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The inductance and parasitic capacitance of the induction coil are large, which is prone to self-excited oscillation
[0005] 2. The parasitic inductance of the integral resistor, the large capacitance will distort the test signal
General self-integrating Rogowski coils cannot meet the test requirements

Method used

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  • Rogowski coil for measuring nanosecond pulse current
  • Rogowski coil for measuring nanosecond pulse current
  • Rogowski coil for measuring nanosecond pulse current

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Experimental program
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Embodiment Construction

[0031] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0032] Embodiment of the present invention: the nanosecond pulse current Rogowski coil is mainly composed of an induction coil 1 and an integrating resistor 2 . During the test, the integrating resistor 2 is connected with the pulse attenuator 3, and the test current A passes through the center of the induction coil. Its composition diagram is as follows figure 1 shown.

[0033] The induction coil includes three parts, which are ultrafine crystal core 6, copper strip 4 and shielding shell 5, and the thickness of the shielding shell is 2mm. Its specific composition is as figure 2 shown. The ultramicrocrystalline magnetic core is wound with insulating tape to prevent the copper tape from being short-circuited. Copper tape is wound 6 turns outside the magnetic core. The width of the copper tape is 8 mm and the thickness is 0.15 mm. The copper tapes are insulat...

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Abstract

The invention relates to a Rogowski coil for measuring nanosecond pulse current. The Rogowski coil comprises an ultracrystalline magnetic core and a copper belt wound on the ultracrystalline magnetic core. And the ultracrystalline magnetic core and the copper belt are arranged in an annular shielding outer shell; an integrating resistor is formed by connecting a plurality of carbon film resistors in parallel, and the carbon film resistors connected in parallel are arranged in the shielding outer shell. The Rogowski coil for measuring nanosecond pulse current can measure the nanosecond pulse current, the test effect of the Rogowski coil is good in actual use, the Rogowski coil can maximumly test current pulses with the leading edge being several nanoseconds, and current amplitude of several kilo-amperes can be measured.

Description

technical field [0001] The invention relates to a Rogowski coil for measuring nanosecond pulse current, which is a kind of Rogowski coil which improves the induction coil of a general Rogowski coil, integrates the resistance to reduce the self-excited oscillation of the Rogowski coil itself, and improves its corresponding frequency, so as to realize the test of nanosecond pulse current. Background technique [0002] With the development of pulse power technology, the rising edge of high-voltage pulse signal is getting faster and faster, and the requirements for pulse measurement are getting higher and higher. The measurement of pulse current generally adopts coaxial shunt or Rogowski coil. The Rogowski coil has the advantages of being passive and having no direct electrical contact with the test equipment, and has been widely used. [0003] At present, external integrating Rod coils are commonly used in the measurement of microsecond current signals. Since the external inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00H01F17/04H01F27/36
Inventor 解江远何鹏军张帆王嘉煜王亚杰金兆鑫蒋丹荆晓鹏赵程光李奇微
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP
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