Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof
A Rogowski coil and integrating resistor technology, which is applied in the field of high-power pulse measurement, can solve the problems of output waveform distortion and increased influence, and achieve the effect of uniform resistance, improved accuracy, and uniform and stable resistance
Active Publication Date: 2015-04-08
XI AN JIAOTONG UNIV
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Problems solved by technology
However, when the frequency of the measured signal is high enough, the influence of the distributed capacitance of the coil and the parasitic inductance and capacitance of the integral resistance itself will gradually increase
If an appropriate method cannot be adopted to suppress the influence of distribution parameters, the output waveform will be greatly distorted
Method used
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[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] like figure 1 As shown, the present invention provides a low-resistance non-inductive self-integrating Rogowski coil integrating resistor, including: a return device and a head-end matching resistor 3 arranged in the return device, wherein the return device includes a cylindrical metal support 4 , the outer surface of the metal support 4 is provided with an insulating layer 5, and the outer surface of the insulating layer 5 is provided with a gold-sprayed layer 6; the gold-sprayed layer 6 is made of an outer conductor structure by a gold-spraying process.
[0035] The outer surface of the backflow device is provided with a metal shielding shell 8, and the backflow device and the metal shielding shell 8 are arranged concentrically, and an air insulation layer is arranged between the backflow device and the metal shielding shell 8, and a cable head 7 is installe...
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The invention discloses a low-resistance non-inductive self-integration Rogowski coil integration resistor and a manufacturing method thereof. The low-resistance non-inductive self-integration Rogowski coil integration resistor comprises a backflow device and a first-end matching resistor arranged in the backflow device, wherein the backflow device comprises a cylinder-shaped metal support, the outer surface of the metal support is provided with a super-thin insulation layer, the outer surface of the insulation layer is provided with a metal spraying layer, the outer surface of the backflow device is provided with a metal shielding casing, the backflow device and the metal shielding casing are concentrically arranged, an air insulation layer is arranged between the backflow device and the metal shielding casing, one end of the metal shielding casing is equipped with a cable head, the other end of the metal shielding casing is connected with a shielding casing of a Rogowski coil, the first-end matching resistor is arranged in the metal support, one end of the first-end matching resistor is connected with the front end of the metal support through scolding tin, and the other end of the first-end matching resistor is connected with an inner core of the cable head. The outer surface of the backflow device is provided with the metal shielding casing, and the backflow device and the metal shielding casing are concentrically arranged, through the metal shielding casing, influence of an external electromagnetic field on output signals can be reduced, and accuracy of the output signals is improved.
Description
technical field [0001] The invention belongs to the field of high-power pulse measurement, and relates to a low-resistance value non-inductive self-integrating Rogowski coil integral resistance for measuring steep pulse front (ns level) and high amplitude (hundred kA) pulse current and a manufacturing method thereof. Background technique [0002] With the rapid development of pulse power technology and the gradual improvement of energy storage technology, electric pulses with steep pulse fronts and high amplitudes have been more and more widely used. The most common ways to measure current pulses are shunts and Rogowski coils. [0003] The principle of the shunt is that when a large pulse current flows through a non-inductive resistor, a voltage drop will occur, and the current waveform of the resistor can be obtained by measuring the voltage waveform of the resistor. But the actual resistance is difficult to be insensitive, and the inductance can only be reduced as much as...
Claims
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IPC IPC(8): G01R19/00
Inventor 丁卫东韩若愚景龑吴佳玮刘巧珏周海滨
Owner XI AN JIAOTONG UNIV