CN104237591B - Designing method and achievement for single PCB closed rogowski coil resisting magnetic field interference - Google Patents
Designing method and achievement for single PCB closed rogowski coil resisting magnetic field interference Download PDFInfo
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- CN104237591B CN104237591B CN201310239226.2A CN201310239226A CN104237591B CN 104237591 B CN104237591 B CN 104237591B CN 201310239226 A CN201310239226 A CN 201310239226A CN 104237591 B CN104237591 B CN 104237591B
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Abstract
The invention provides a designing method and achievement for a single PCB closed rogowski coil resisting magnetic field interference. The single PCB closed rogowski coil is formed by connecting a first coil and a second coil in series, the first coil and the second coil are arranged on a single PCB, and the winding direction of the first coil is opposite to the winding direction of the second coil. The single PCB closed rogowski coil comprises a plurality of same constitutional units which are connected in series, and the centers of the constitutional units are evenly distributed on a magnetic line of a magnetic field produced by current to be detected. Each constitutional unit comprises a circle of wire turn of the first coil and a circle of wire turn of the second coil, wherein the two wire turns are closely attached to each other. Each wire turn comprises an inlet wire, an outlet wire and a winding wire. The two outlet wires of the last constitutional unit are directly connected. The winding wires are formed by wires in different layers and holes among the different layers in a surrounding mode, the plane of each winding wire is perpendicular to the PCB surface, and the wiring routes of the winding wires coincide with one another in the direction perpendicular to the PCB surface. The normal direction of the magnetic line passing through the center of the section of the winding wires is approximately same with the direction of the section of the winding wires, and the tangential direction is approximately perpendicular to the section of the winding wires.
Description
Technical field
Present invention relates generally to PCB (printed circuit board (PCB)) Rogowski coil in current sensor, and in particular to a kind of diamagnetic
Field interference monolithic PCB closure Rogowski coil methods for designing and realization.
Background technology
Roche (Rogowski) coil is that wire is formed uniformly around on the framework of the nonmagnetic substance of sectional uniform
Coil.Rogowski coil has lightweight, bandwidth, the linearity good and the features such as without magnetic saturation phenomenon because of it, commonly used
In current measuring device.Whether can be opened when Rogowski coil is measured according to it, be segmented into closing Rogowski coil and opening
Rogowski coil.Fig. 1 is shown closure Rogowski coil.
Closure Rogowski coil 100 includes following part：
(1) signal output part 125 and signal output part 130；
(2) from signal output part 130 around Circular Winding terminal 120 Circular Winding 110；
(3) from Circular Winding terminal 120 along Circular Winding center to signal output part 125 loop line circle 115.
, it is necessary to first by current－carrying conductor 105 through closure Rogowski coil 100 during using the closure measurement electric current of Rogowski coil 100.
In order to ensure certainty of measurement, it is necessary to allow current－carrying conductor 105 to pass perpendicularly through the center of closure Rogowski coil 100, current－carrying conductor 105
Center and the center superposition of closure Rogowski coil 100.Closure Rogowski coil 100 is looped around around current－carrying conductor 105, when treating test cross
When stream electric current I (t) flows through current－carrying conductor 105, alternating current I (t) to be measured can produce AC magnetic field around current－carrying conductor 105,
The magnetic line of force is approximately the circle with the center of current－carrying conductor 105 as the center of circle, in each astragal circle of 100 Circular Winding of closure Rogowski coil 110
The heart is located on the one therein circular magnetic line of force.The corresponding sectional area of each astragal circle of Circular Winding 110 of closure Rogowski coil 100
Equal, (i.e. the kernel of section is arrived for each astragal circle cross-wise direction of Circular Winding 110 and the excessively magnetic line of force normal direction of the kernel of section
The center radius direction of current－carrying conductor 105) it is consistent, the tangential direction of section and the circular magnetic line of force is vertical.Can so ensure to close
Close the magnetic flux φ of each wire turn of Rogowski coil Circular Windingi(t) approximately equal, and the magnetic flux and electric current be directly proportional.
ΦiT ()=LI (t) is 1)
Alternating current I (t) to be measured produces the change of magnetic flux in the volume that the closure Circular Winding of Rogowski coil 100 is surrounded
Change, Rogowski coil 100 can be closed and be converted into the voltage signal proportional to each wire turn total magnetic flux differential, exactly close sieve
Output voltage signal V (t) between the output end 125 and output end 130 of family name's coil 100.
Can be obtained after simplification, closure Rogowski coil output voltage signal V (t) approximately with the differential of alternating current I (t)
It is proportional.
Closure Rogowski coil output voltage signal V (t) is integrated, it is possible to obtain proportional with alternating current I (t)
Signal, here it is closure Rogowski coil measure alternating current principle.
I (t)=K ∫ V (t) dt 4)
Closure Rogowski coil measurement current precision is higher, and measurement signal band is roomy, can realize electricity with relatively low cost
Gas isolation measurement, tolerance current capacity is virtually limitless big, it is adaptable to the accurate measurement with fixed position current－carrying conductor electric current, can
To be applied to the fields such as relay protection.
, when current measurement is carried out, Circular Winding 110 is except pickup to alternating current I (t) to be measured for closure Rogowski coil 100
Outside the changes of magnetic field of generation, can also pick up to other alternations in space and disturb magnetic field.Such as when occur in Fig. 1 paper
During the alternation interference magnetic field in face direction, will be produced between the starting point 130 and terminal 120 of Circular Winding 110 because alternation is disturbed
The voltage signal that magnetic field produces.
In order to resist external magnetic field to closure Rogowski coil 100 measurement influence, closure Rogowski coil 100 except annular around
Outside group 110, can also be between the terminal 120 of Circular Winding 110 and signal output part 125, along the center institute of Circular Winding 110
Circle, the loop circle 115 of coiling one.So when the alternation for the paper direction in Fig. 1 occur disturbs magnetic field, in loop line
Can be produced between the starting point 120 and terminal 125 of circle 115 due to the voltage signal that alternation interference magnetic field produces, this voltage signal
And the voltage signal between the starting point 130 and terminal 120 of Circular Winding 110, size approximately equal, opposite polarity, two voltages
The result of Signal averaging is approximately 0.So when the alternation for the paper direction in Fig. 1 occur disturbs magnetic field, in closure sieve
Interference voltage signal is hardly produced between the output end 125 and output end 130 of family name's coil 100.
Traditional Wound-rotor type closes Rogowski coil as shown in Fig. 2 by the coiling on the skeleton of annular non-magnet material
Form, include Circular Winding and loop line circle.In coiling, a loop is placed along annular frame center position first
Circle, further around Circular Winding processed.The voltage signal that external interference magnetic field produces in the Circular Winding of closure Rogowski coil, and loop line
The voltage signal size approximately equal produced on circle, opposite polarity, the result after superposition is approximately 0, this reduces outer
Influence of the boundary magnetic field to closure Rogowski coil measurement.
Traditional Wound-rotor type closure Rogowski coil, coiling is typically to be completed by artificial or coil winding machine, it is difficult to accomplish coil
Uniform coiling, every circle coil section are equal, and have the shortcomings that easily broken string and layer capacitance increase error, in the industrial production
Parameter consistency hardly results in guarantee, so that characteristic when influenceing Rogowski coil measurement electric current.
In order to overcome traditional type to close the shortcoming of Rogowski coil, a kind of new closure Roche being made up of PCB is occurred in that
Coil, abbreviation PCB closure Rogowski coils, as shown in the PCB closure Rogowski coils 305 and 310 of the annular in Fig. 3.PCB is closed
Rogowski coil uses CAD (CAD), printed conductor (follow-up referred to as to connect up) is evenly arranged on PCB, such as
Shown in PCB closure Rogowski coils 305 in Fig. 3.The astragal circle of Circular Winding one of PCB closure Rogowski coils 305 is by top layer (with face
To reader PCB surface for PCB top layer, and the reverse another side of PCB top layers be PCB bottoms) wiring 315, connection top layer and
The plated through-hole (being subsequently referred to as via) 320 of bottom, bottom wiring 325 is constituted.PCB closes each astragal circle of Rogowski coil 305
Centered on annulus PCB centers, it is evenly arranged along annulus, wire turn section is perpendicular to PCB.
Because PCB uses number processing technology, can ensure that the coil of PCB closure each astragal circles of Rogowski coil cuts from technique
Area equation, the PCB closure Rogowski coils produced, not only overcomes the shortcoming that traditional type closes Rogowski coil, and sensitive
Degree, certainty of measurement and stability will be better than traditional coil by copper wire winding.Making PCB closure Rogowski coils only needs
Its wiring diagram is drawn on computers, it is simple and efficient.PCB closes Rogowski coil and is produced by Digit Control Machine Tool, it is to avoid it is cumbersome around
Process processed, can shorten the cycle of coil processing, improve the efficiency of production.PCB closures Rogowski coil parameter during production in enormous quantities
Dispersiveness it is smaller, with a collection of coil produced, its distributed constant is basically identical.
PCB closes Rogowski coil 305 when current measurement is carried out, and Circular Winding is except pickup to alternating current I (t) to be measured
Outside the changes of magnetic field of generation, can also pick up to other alternations in space and disturb magnetic field.Such as when occur in Fig. 3 paper
During the alternation interference magnetic field in face direction, interference can be produced between the output end 345 and output end 350 of PCB closure Rogowski coils 305
Voltage signal.In order to resist influence of the external magnetic field to the PCB closure measurements of Rogowski coil 305, can be using two pieces of PCB closure sieve
Family name's coil is connected, and a combination PCB closure Rogowski coil is constituted, as shown in figure 3, PCB closure Rogowski coils 305 and PCB closures
Rogowski coil 310 is connected, composition combination PCB closure Rogowski coils 300.
PCB closes Rogowski coil 310 and PCB closes the wiring mirror-image arrangement of Rogowski coil 305, Circular Winding direction of winding
Conversely.One astragal circle of PCB closure Rogowski coils 310 is made up of bottom wiring 330, via 335 and top layer wiring 340, and right
One astragal circle of the PCB closure Rogowski coils 305 answered is made up of top layer wiring 315, via 320 and bottom wiring 325.While bottom
Layer wiring 330 and top layer connect up 315, via 335 and via 320, top layer wiring 340 and 325 positions of bottom wiring are just the same.
Other each astragal circles are similarly such.
During composition combination PCB closure Rogowski coils 300, on PCB closure Rogowski coils 305 and PCB closure Rogowski coils 310
Lower floor stacks puts, and PCB closes output end 345, the output end 350 of Rogowski coil 305, and PCB closes the output of Rogowski coil 310
End 355, output end 360, position is completely superposed.The output end 350 and PCB closure Rogowski coils of PCB closure Rogowski coils 305
310 output end 360 is connected, and realizes that PCB closure Rogowski coils 305 and PCB close the series connection of Rogowski coil 310.Combination PCB is closed
The output end 365 for closing Rogowski coil 300 is connected with the output end 345 of closure Rogowski coil 305, combination PCB closure Rogowski coils
300 output end 370 is connected with the output end 355 of closure Rogowski coil 310,
When the alternation for the paper direction in Fig. 3 occur disturbs magnetic field, PCB closes the output end of Rogowski coil 305
The interference voltage signal produced between 345 and output end 350, and PCB closes the output end 355 and output end of Rogowski coil 310
The interference voltage signal produced between 360, size is basically identical, opposite polarity.Rogowski coil 305 and PCB closures are closed in PCB
In the case of Rogowski coil 310 is connected, the result of the two interference signals superposition is approximately 0.So when occur in Fig. 1 paper
During the alternation interference magnetic field in face direction, between the output end 365 and output end 370 of combination PCB closure Rogowski coils 300 almost
Interference voltage signal will not be produced.
Two PCB that this processing method is used closure Rogowski coil, although apart from close, but in extraneous magnetic fields
The interference of lower generation can not be completely the same, it is not possible to is completely counterbalanced by.Further, the two PCB can be closed Roche line
On monolithic PCB, two PCB closure Rogowski coil series connection of so design can be better achieved reduction external magnetic field for circle design
The effect of interference.Fig. 4 A and Fig. 4 B are shown being in series by two groups of opposite coils of direction of winding on monolithic PCB
PCB closes Rogowski coil (referring to HIGH PRECISION ROGOWSKI COIL, UNITED STATES PATENT, US 6
313 623 NOV.62001), Fig. 4 A be shown using alternative form be routed on monolithic PCB by two groups of direction of winding phases
PCB that anti-coil is in series closure Rogowski coil, Fig. 4 B be shown using interdigited fashion be routed on monolithic PCB by
The PCB closure Rogowski coils that two groups of opposite coils of direction of winding are in series.
The PCB being in series by two groups of opposite coils of direction of winding on monolithic PCB that Fig. 4 A and Fig. 4 B show is closed
Rogowski coil scheme, although can preferably reduce the effect of external magnetic field interference, but two coils being designed so as to
Still it is not properly arrived at completely the same, it is impossible to realize eliminating the influence of external magnetic field interference well.It is necessary to carry for this
Rogowski coil method for designing is closed for a kind of monolithic PCB, the direction of winding that can design two groups of more consistent series connection is opposite
Monolithic PCB closure Rogowski coils, can further reduce influence of the external magnetic field to measuring, improve monolithic PCB closure
The ability of Rogowski coil confrontation external magnetic field interference.
The content of the invention
Rogowski coil method for designing and reality are closed the invention provides a kind of monolithic PCB that can resist external magnetic field interference
It is existing.
According to one aspect of the present invention, the invention discloses a kind of monolithic PCB closures that can resist external magnetic field interference
Rogowski coil method for designing, it includes：
(1) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, the direction of winding by two groups of series connection is opposite
Coil：First coil and the second coil are constituted, and first coil and the second coil are located on monolithic PCB, first coil and the second line
Circle is together in series, composition monolithic PCB closure Rogowski coils.
(2) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, is connected by several identical component units
Form, each component units includes an astragal circle of first coil and an astragal circle of the second coil, this two astragals circle is tight
It is close adjacent.
(3) an astragal circle of the first coil of each component units of monolithic PCB closures Rogowski coil includes：Inlet wire,
Coiling, outlet, inlet wire and outlet are respectively used to connect a upper component units and next component units belong to first coil
Wire turn, coiling is surround by the via between the wiring of different layers and different layers and formed.Monolithic PCB closes the every of Rogowski coil
One astragal circle of one the second coil of component units includes：Inlet wire, coiling, outlet, inlet wire and outlet are respectively used in connection
One component units and next component units belong to the wire turn of the second coil, and coiling is by the wiring positioned at different layers and different layers
Between via around forming.
(4) the monolithic PCB closure Rogowski coils that can resist external magnetic field interference are provided with two signal output parts：First signal
Output end and secondary signal output end, what is be connected with the first signal output part is first wire turn of the first coil of component units
Inlet wire, what is be connected with secondary signal output end is first inlet wire of the wire turn of the second coil of component units.With first
Component units it is adjacent be second component units, by that analogy, to the last component units.Last component units
First coil wire turn outlet, and the outlet of wire turn of the second coil of last component units is joined directly together, and realizes
Series connection between the first coil and the second coil of monolithic PCB closure Rogowski coils.
(5) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, the first coil of each component units
Perpendicular to PCB surface, the section that coiling is surrounded is located on the cross section of PCB the coiling plane of wire turn, and the routing path of coiling exists
Overlapped on the direction of PCB surface.The coiling plane of the wire turn of the second coil of each component units is perpendicular to PCB tables
Face, the section that coiling is surrounded is located on the cross section of PCB, and the routing path of coiling is overlapping on the direction of PCB surface.
(6) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, the center of all component units is uniformly distributed
On one magnetic line of force in the magnetic field produced in electric current to be measured.The coiling cross-wise direction of the wire turn of the first coil of all component units
It is approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling section of the wire turn of first coil and by the coiling
Magnetic line of force tangential direction (i.e. magnetization direction) near normal of kernel of section.The wire turn of the second coil of all component units
Coiling cross-wise direction be approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling of the wire turn of the second coil cuts
Face and magnetic line of force tangential direction (i.e. magnetization direction) near normal for passing through the coiling kernel of section.
According to one aspect of the present invention, the invention discloses the monolithic PCB closures that can resist external magnetic field interference
The specific embodiment of Rogowski coil method for designing, can resist the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference, its bag
Include：
(1) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, by two groups of direction of winding phases of series connection
Anti- coil first coil and the second coil are constituted, and first coil and the second coil are located on the two-sided PCB of monolithic, first coil and
Second coil is together in series, the two-sided PCB closures Rogowski coil of composition monolithic.
(2) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, by several identical component units
It is in series, each component units includes an astragal circle of first coil and an astragal circle of the second coil, this two astragal
Circle is closely adjacent.
(3) an astragal circle of the first coil of each component units of the two-sided PCB closures Rogowski coil of monolithic includes：Enter
Line, coiling, outlet, inlet wire and outlet are respectively used to connect a upper component units and next component units belong to first coil
Wire turn, coiling is by the via between the wiring of top layer and bottom and top layer bottom around forming.The two-sided PCB closures of monolithic
One astragal circle of the second coil of each component units of Rogowski coil includes：Inlet wire, coiling, outlet, inlet wire and outlet point
A component units Yong Yu not connected and next component units belong to the wire turn of the second coil, coiling is by positioned at top layer and bottom
Via between the wiring of layer and top layer bottom surround and forms.
(4) the two-sided PCB closures Rogowski coil of monolithic that can resist external magnetic field interference is provided with two signal output parts：First
Signal output part and secondary signal output end, what is be connected with the first signal output part is first first coil of component units
The inlet wire of wire turn, what is be connected with secondary signal output end is first inlet wire of the wire turn of the second coil of component units.With
One component units it is adjacent be second component units, by that analogy, to the last component units.Last composition
The outlet of the wire turn of the first coil of unit, and the outlet of wire turn of the second coil of last component units is joined directly together,
Realize the series connection between the first coil and the second coil of the two-sided PCB closures Rogowski coil of monolithic.
(5) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference, the First Line of each component units can be resisted
Perpendicular to two-sided PCB surface, the section that coiling is surrounded is located on the cross section of PCB the coiling plane of the wire turn of circle, the cloth of coiling
Thread path is overlapping on the direction of two-sided PCB surface.The coiling of the wire turn of the second coil of each component units is put down
Perpendicular to two-sided PCB surface, the section that coiling is surrounded is located on the cross section of two-sided PCB, and the routing path of coiling is vertical in face
In coincidence on the direction of two-sided PCB surface.
(6) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, the center of all component units is uniform
It is distributed on a magnetic line of force in the magnetic field that electric current to be measured is produced.The coiling section of the wire turn of the first coil of all component units
Direction is approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling section of the wire turn of first coil and by this
Magnetic line of force tangential direction (i.e. magnetization direction) near normal of coiling kernel of section.Second coil of all component units
The coiling cross-wise direction of wire turn is approximately by the magnetic line of force normal direction of the coiling kernel of section, the wire turn of the second coil around
Line section and magnetic line of force tangential direction (i.e. magnetization direction) near normal for passing through the coiling kernel of section.
Brief description of the drawings
Fig. 1 shows closure Rogowski coil.
Fig. 2 takes back traditional Wound-rotor type closure Rogowski coil of wire turn.
Fig. 3 is shown and closes the combination PCB closure Rogowski coils that Rogowski coil is in series by two pieces of mirror image PCB.
Fig. 4 A are shown on monolithic PCB using the opposite PCB of the direction of winding of two groups of series connection of alternative form wiring
Closure Rogowski coil, Fig. 4 B are shown on monolithic PCB opposite using the direction of winding of two groups of series connection of interdigited fashion wiring
PCB closure Rogowski coil.
Fig. 5 is shown the specific embodiment built according to method for designing of the invention, two-sided PCB closures sieve of monolithic
Family name's coil.Fig. 5 A are shown the lamination of the two-sided PCB closure Rogowski coil top layers of monolithic and bottom, and it is double that Fig. 5 B are shown monolithic
Face PCB closes the top layer of Rogowski coil, and Fig. 5 C are shown the bottom that the two-sided PCB of monolithic closes Rogowski coil.
Fig. 6 shows that the two-sided PCB of monolithic closes the local detail of Rogowski coil.Fig. 6 A are shown the two-sided PCB of monolithic and close
The lamination of the local top layer of Rogowski coil and bottom is closed, Fig. 6 B are shown the local top of the two-sided PCB closures Rogowski coil of monolithic
Layer, Fig. 6 C are shown the local bottom of the two-sided PCB closures Rogowski coil of monolithic.
Specific embodiment
Fig. 5 is shown the specific embodiment built according to method for designing of the invention, can resist external magnetic field and do
The two-sided PCB closures Rogowski coil 500 of monolithic disturbed, it is adaptable to which measurement passes perpendicularly through the current-carrying at PCB closure Rogowski coils 500 center
The electric current flowed through on conductor 105, the alternating magnetic field magnetic line of force that the electric current is produced is family with PCB closure Rogowski coils 500 center
It is the circle in the center of circle.Fig. 5 A are shown the lamination of the two-sided PCB closure Rogowski coil top layers of monolithic and bottom, and Fig. 5 B are shown list
The two-sided PCB of block closes the top layer of Rogowski coil, and Fig. 5 C are shown the bottom that the two-sided PCB of monolithic closes Rogowski coil.
The two-sided PCB closures Rogowski coil 500 of monolithic includes two groups of opposite coils of direction of winding 501 and 502, coil
501 and coil 502 be together in series, composition PCB closure Rogowski coil 500.The two-sided PCB of monolithic closes Rogowski coil 500 by many
Individual identical component units are in series, the component units 503 that such as Fig. 5 A show.As shown in Fig. 5 A, Fig. 5 B, Fig. 5 C, group
Into the center of unit 503, and other component units center, the circle that the electric current flowed through on current－carrying conductor 105 is produced
On the shape magnetic line of force, each component units is evenly distributed on this circular magnetic line of force.
Include each astragal circle of the opposite coil of two groups of direction of windings in each component units, component units 503 include
One astragal circle 504 of coil 501, an astragal circle 505 of coil 502, this two astragals circle is closely adjacent.Fig. 5 B show composition
The top layer portion 506 of the wire turn 504 of unit 503, the top layer portion 507 of wire turn 505.The top layer portion 506 and wire turn of wire turn 504
506 top layer portion 507 is closely adjacent.Fig. 5 C show the floor portions 508 of the wire turn 504 of component units 503, wire turn 505
Floor portions 509.The floor portions 508 of wire turn 504 and the floor portions 509 of wire turn 506 are closely adjacent.
Fig. 6 shows that the two-sided PCB of monolithic closes the local detail of Rogowski coil 500.Fig. 6 A are shown the two-sided PCB of monolithic
The top layer of the part of Rogowski coil 500 and the lamination of bottom are closed, Fig. 6 B are shown the two-sided PCB closures Rogowski coil 500 of monolithic
Local top layer, Fig. 6 C are shown the bottom that the two-sided PCB of monolithic closes the part of Rogowski coil 500.
Fig. 6 A show the top layer and the lamination of bottom of a component units 600 of closure PCB closure Rogowski coils 500,
The laminate portion of the astragal circle 618 including coil 620, and the opposite coil 621 of another group of direction of winding an astragal circle 619
Laminate portion.The laminate portion of one astragal circle 618 of coil 620, including：Inlet wire 601, wiring 607, via 609, via
604th, outlet 606.The laminate portion of one astragal circle 619 of coil 621, including：Inlet wire 602, wiring 608, via 610, via
603rd, outlet 605.
Fig. 6 B show that closure PCB closes top layer for component units 600 of Rogowski coil 500, including coil 620
The top layer portion of one astragal circle 618, and an astragal circle 619 of the opposite coil 621 of another group of direction of winding top layer portion.Line
The top layer portion of one astragal circle 618 of circle 620, includes：Via 609, wiring 616, via 604.One astragal circle of coil 621
619 top layer portion, includes：Inlet wire 602, wiring 617, via 610, via 603, outlet 605.
Fig. 6 C show that closure PCB closes bottom for component units 600 of Rogowski coil 500, including coil 620
The floor portions of one astragal circle 618, and an astragal circle 619 of the opposite coil 621 of another group of direction of winding floor portions.Line
The floor portions of one astragal circle 618 of circle 620, include：Inlet wire 601, wiring 614, via 609, via 604, outlet 606.
The floor portions of one astragal circle 619 of coil 621, include：Via 610, wiring 615, via 603.
Fig. 6 A, Fig. 6 B, Fig. 6 C show that closure PCB closes the square of an astragal circle 618 of the coil 620 of Rogowski coil 500
Shape winding portion, is made up of wiring 616, via 609, wiring 614, via 604, and the top layer of rectangle winding portion connects up 616 Hes
Bottom wiring 614, is being to overlap on the direction of PCB surface.One circle of the opposite coil 621 of another group of direction of winding
The rectangle winding portion of wire turn 619, is made up of, the bottom of rectangle winding portion wiring 615, via 610, wiring 617, via 603
Layer wiring 615 and top layer wiring 617 are being to overlap on the direction of PCB surface.
Fig. 6 A, Fig. 6 B, Fig. 6 C show that closure PCB closes an astragal of a component units 600 of Rogowski coil 500
The rectangle coiling cross-wise direction of circle 618, and closure PCB closes an astragal circle of a component units 600 of Rogowski coil 500
619 rectangle coiling cross-wise direction, the center of Rogowski coil 500 and penetrating for the coiling kernel of section are closed along by closing PCB
Line direction, that is, close the magnetic line of force where each component units center of PCB closure Rogowski coils 500, in the coiling kernel of section
The normal direction of position.
Fig. 6 A, Fig. 6 B, Fig. 6 C show that closure PCB closes an astragal of a component units 600 of Rogowski coil 500
The rectangle coiling section of circle 618, and closure PCB closes an astragal circle 619 of a component units 600 of Rogowski coil 500
Rectangle coiling section, and hung down by closing the directions of rays at center and the coiling kernel of section that PCB closes Rogowski coil 500
Directly, i.e., the magnetic line of force where each component units center of closure PCB closures Rogowski coil 500, in the coiling kernel of section position
Tangential direction.
Fig. 6 A, Fig. 6 B, Fig. 6 C show, there is provided outer on first component units of closure PCB closure Rogowski coils 500
Portion's access point 611, connects first inlet wire of the first circle coil of the coil of component units 620, closure PCB closure Rogowski coils
Foreign access point 612 is provided with 500 first component units, first another group of direction of winding phase of component units is connected
The inlet wire of the first circle coil of anti-coil 621.Foreign access point 611, foreign access point 612 are used as closure PCB closure Roches
The two ends of the output signal of coil 500.
Fig. 6 A, Fig. 6 B, Fig. 6 C show, on last component units 613 of closure PCB closure Rogowski coils 500, line
Two outlets between the via 622 of circle 620, and the via 623 of the opposite coil 621 of another group of direction of winding, directly pass through
Wiring 624 is connected, and realizes between the opposite coil 620 and 621 of two groups of direction of windings of closure PCB closure Rogowski coils 500
Series connection.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (2)
1. a kind of monolithic PCB that can resist external magnetic field interference closes Rogowski coil, it is characterised in that including：
(1) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, by the opposite line of the direction of winding of two groups of series connection
Circle：First coil and the second coil are constituted, and first coil and the second coil are located on monolithic PCB, first coil and the second coil
It is together in series, composition monolithic PCB closure Rogowski coils；
(2) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, by the series connection of several identical component units
Into each component units includes an astragal circle of first coil and an astragal circle of the second coil, and this two astragals circle is tight
It is adjacent；
(3) an astragal circle of the first coil of each component units of monolithic PCB closures Rogowski coil includes：Inlet wire, coiling,
Outlet, inlet wire and outlet are respectively used to connect a upper component units and next component units belong to the wire turn of first coil,
Coiling is surround by the via between the wiring of different layers and different layers and formed；Each of monolithic PCB closure Rogowski coils
One astragal circle of the second coil of component units includes：It is upper one that inlet wire, coiling, outlet, inlet wire and outlet are respectively used to connection
Component units and next component units belong to the wire turn of the second coil, and coiling is by between the wiring of different layers and different layers
Via around forming；
(4) the monolithic PCB closure Rogowski coils that can resist external magnetic field interference are provided with two signal output parts：First signal output
End and secondary signal output end, what is be connected with the first signal output part is entering for first wire turn of the first coil of component units
Line, what is be connected with secondary signal output end is first inlet wire of the wire turn of the second coil of component units, and first composition
Unit it is adjacent be second component units, by that analogy, to the last component units；The of last component units
The outlet of the wire turn of one coil, and the outlet of wire turn of the second coil of last component units is joined directly together, and realizes monolithic
Series connection between the first coil and the second coil of PCB closure Rogowski coils；
(5) the monolithic PCB closure Rogowski coils of external magnetic field interference, the wire turn of the first coil of each component units can be resisted
Coiling plane perpendicular to PCB surface, the section that coiling is surrounded be located at PCB cross section on, the routing path of coiling is vertical
In coincidence on the direction of PCB surface；The coiling plane of the wire turn of the second coil of each component units perpendicular to PCB surface,
The section that coiling is surrounded is located on the cross section of PCB, and the routing path of coiling is overlapping on the direction of PCB surface；
(6) the monolithic PCB closure Rogowski coils of external magnetic field interference can be resisted, the center of all component units is evenly distributed on treats
Survey on a magnetic line of force in the magnetic field that electric current is produced, the coiling cross-wise direction of the wire turn of the first coil of all component units is approximate
It is by the magnetic line of force normal direction of the coiling kernel of section, the coiling section of the wire turn of first coil and by the coiling section
Magnetic line of force tangential direction (i.e. magnetization direction) near normal at center；The wire turn of the second coil of all component units around
Line cross-wise direction is approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling section of the wire turn of the second coil and
By magnetic line of force tangential direction (i.e. magnetization direction) near normal of the coiling kernel of section.
2. a kind of two-sided PCB of monolithic that can resist external magnetic field interference closes Rogowski coil, it is characterised in that including：
(1) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, the direction of winding by two groups of series connection is opposite
Coil first coil and the second coil are constituted, and first coil and the second coil are located on the two-sided PCB of monolithic, first coil and second
Coil is together in series, the two-sided PCB closures Rogowski coil of composition monolithic；
(2) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, is connected by several identical component units
Form, each component units includes an astragal circle of first coil and an astragal circle of the second coil, this two astragals circle is tight
It is close adjacent；
(3) an astragal circle of the first coil of each component units of the two-sided PCB closures Rogowski coil of monolithic includes：Inlet wire,
Coiling, outlet, inlet wire and outlet are respectively used to connect a upper component units and next component units belong to first coil
Wire turn, coiling is surround by the via between the wiring of top layer and bottom and top layer bottom and formed；Two-sided PCB closures sieve of monolithic
One astragal circle of the second coil of each component units of family name's coil includes：Inlet wire, coiling, outlet, inlet wire and outlet are distinguished
Belong to the wire turn of the second coil for connecting a upper component units and next component units, coiling is by positioned at top layer and bottom
Wiring and top layer bottom between via around forming；
(4) the two-sided PCB closures Rogowski coil of monolithic that can resist external magnetic field interference is provided with two signal output parts：First signal
Output end and secondary signal output end, what is be connected with the first signal output part is first wire turn of the first coil of component units
Inlet wire, what is be connected with secondary signal output end is first inlet wire of the wire turn of the second coil of component units, and first
Component units it is adjacent be second component units, by that analogy, to the last component units；Last component units
First coil wire turn outlet, and the outlet of wire turn of the second coil of last component units is joined directly together, and realizes
Series connection between the first coil and the second coil of the two-sided PCB closures Rogowski coil of monolithic；
(5) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, the first coil of each component units
Perpendicular to two-sided PCB surface, the section that coiling is surrounded is located on the cross section of PCB the coiling plane of wire turn, the wiring topology of coiling
Footpath is overlapping on the direction of two-sided PCB surface；The coiling plane of the wire turn of the second coil of each component units is hung down
Directly in two-sided PCB surface, the section that coiling is surrounded is located on the cross section of two-sided PCB, and the routing path of coiling is perpendicular to double
Overlapped on the direction of face PCB surface；
(6) the two-sided PCB closures Rogowski coil of monolithic of external magnetic field interference can be resisted, the center of all component units is uniformly distributed
On one magnetic line of force in the magnetic field produced in electric current to be measured, the coiling cross-wise direction of the wire turn of the first coil of all component units
It is approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling section of the wire turn of first coil and by the coiling
Magnetic line of force tangential direction (i.e. magnetization direction) near normal of kernel of section；The wire turn of the second coil of all component units
Coiling cross-wise direction be approximately by the magnetic line of force normal direction of the coiling kernel of section, the coiling of the wire turn of the second coil cuts
Face and magnetic line of force tangential direction (i.e. magnetization direction) near normal for passing through the coiling kernel of section.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239226.2A CN104237591B (en) | 2013-06-18 | 2013-06-18 | Designing method and achievement for single PCB closed rogowski coil resisting magnetic field interference |
| PCT/CN2014/078242 WO2014201937A1 (en) | 2013-06-18 | 2014-05-23 | Pcb rogowski coil |
| US14/890,906 US10739384B2 (en) | 2013-06-18 | 2014-05-23 | PCB Rogowski coil |
| EP14813582.5A EP3012846B1 (en) | 2013-06-18 | 2014-05-23 | Pcb rogowski coil |
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| CN201310239226.2A CN104237591B (en) | 2013-06-18 | 2013-06-18 | Designing method and achievement for single PCB closed rogowski coil resisting magnetic field interference |
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| CN104237591B true CN104237591B (en) | 2017-05-17 |
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| CN106526302A (en) * | 2016-10-25 | 2017-03-22 | 华中科技大学 | Method for manufacturing high-performance air-core coil with balanced turns |
| CN108120910A (en) * | 2018-02-28 | 2018-06-05 | 三峡大学 | A kind of local discharge signal detecting system |
| CN109521264A (en) * | 2018-12-29 | 2019-03-26 | 水木源华电气有限公司 | A kind of digital zero sequence current mutual inductor of on-pole switch |
| CN110836987B (en) * | 2019-11-25 | 2021-12-24 | 新沂市鑫洋电子有限公司 | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof |
| CN116455102B (en) * | 2022-02-28 | 2024-04-05 | 荣耀终端有限公司 | Charging coil assembly and wireless charging device |
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