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Anti-magnetic-field-interference multi-PCB opening Rogowski coil design method and implementation

A technology of Rogowski coils and design methods, applied in coils, instruments, electrical components, etc., can solve problems such as rising PCB processing costs

Active Publication Date: 2015-02-11
BEIJING INHAND NETWORKS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the PCB thickness is limited by the PCB processing technology and cannot be increased without limit. At the same time, as the PCB thickness increases, the PCB processing cost will also rise rapidly.

Method used

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  • Anti-magnetic-field-interference multi-PCB opening Rogowski coil design method and implementation
  • Anti-magnetic-field-interference multi-PCB opening Rogowski coil design method and implementation
  • Anti-magnetic-field-interference multi-PCB opening Rogowski coil design method and implementation

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Embodiment Construction

[0061] What Fig. 5 shows is a specific embodiment constructed according to the design method of the present invention, a plurality of double-sided PCB opening Rogowski coils 500 formed by stacking N-layer double-sided PCBs. The design is suitable for measuring the current flowing through the current-carrying conductor 113 vertically passing through the center of the PCB opening Rogowski coil 500 , and the alternating magnetic field lines generated by the current are a family of circles centered on the center of the PCB opening Rogowski coil 500 . Figure 5A It shows the stacking of the top and bottom layers of the double-sided PCB open Rogowski coil 500 from the first layer to the N-1 layer double-sided PCB stacked by N layers of double-sided PCBs, Figure 5B It shows the top layer of the double-sided PCB open Rogowski coil 500 from the first layer to the N-1 layer of multiple double-sided PCBs stacked by N-layer double-sided PCB, Figure 5C What is shown is the bottom layer o...

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Abstract

The invention provides an anti-external-magnetic-field-interference multi-PCB opening Rogowski coil design method and implementation. A multi-PCB opening Rogowski coil is formed by the series connection of a first coil and a second coil on multiple PCBs, and the first coil and the second coil have different winding directions. The multi-PCB opening Rogowski coil comprises a plurality of same composition units in series connection, the centers of the composition units are uniformly distributed on a line of magnetic force of a magnetic field generated by current to be measured. Each of the composition units comprises one turn of the first coil and one turn of the second coil, and the two turns are adjacent to each other. Each of the turn comprises an inlet wire, an outlet wire and a winding, and two outlet wires of a last component unit are connected directly. The windings are formed by encircling wiring of different layers and through holes among different layers, the surfaces of the windings are perpendicular to the surfaces of PCBs, and the wiring paths of the windings are superposed in a direction which is perpendicular to the surfaces of the PCBs. A magnetic force line normal line direction which goes through a winding cross section center and a winding cross section direction are the same direction approximately, and a tangent direction is approximately perpendicular to a winding cross section.

Description

technical field [0001] The invention generally relates to a PCB (printed circuit board) Rogowski coil in a current sensor, in particular to a design method and realization of a multi-block PCB opening Rogowski coil for anti-magnetic field interference. Background technique [0002] Rogowski coil is a coil formed by uniformly winding wires on a frame of non-magnetic material with uniform cross-section. Rogowski coils have been widely used in current measurement devices because of their light weight, wide frequency band, good linearity and no magnetic saturation phenomenon. Rogowski coils have relatively high accuracy in measuring current, wide measurement signal bandwidth, can realize electrical isolation measurement at a low cost, and have almost unlimited current withstand capacity. They are suitable for accurate measurement of current-carrying conductor current with fixed positions and can be applied to relay areas of protection. [0003] Rogowski coils can be divided in...

Claims

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Application Information

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IPC IPC(8): H05K1/16H05K3/00G01R15/18
CPCG01R19/0046H01F5/003
Inventor 唐先武张建良
Owner BEIJING INHAND NETWORKS TECH
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