CN106531414A - Transformer and control and driving system - Google Patents
Transformer and control and driving system Download PDFInfo
- Publication number
- CN106531414A CN106531414A CN201611186073.XA CN201611186073A CN106531414A CN 106531414 A CN106531414 A CN 106531414A CN 201611186073 A CN201611186073 A CN 201611186073A CN 106531414 A CN106531414 A CN 106531414A
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- shielding construction
- main
- side shielding
- main side
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a transformer and a control and driving system. The transformer comprises a primary-side coil, a primary-side shielding structure, a secondary-side coil and a secondary-side shielding structure, wherein the secondary-side coil is arranged at a position corresponding to the primary-side coil, the primary-side shielding structure is arranged between the primary-side coil and the secondary-side coil, the secondary-side shielding structure is arranged between the primary-side shielding structure and the secondary-side coil, one end of the primary-side coil is connected with the primary-side shielding structure, and one end of the secondary-side coil is connected with the secondary-side shielding structure. A displacement current generated by a common mode voltage can directly flow into the primary-side shielding structure from an emitter, a magnetic field generated when the displacement current flows through the primary-side shielding structure is relatively small, and thus, an interference signal almost cannot be transferred to the secondary-side coil by a magnetic coupling mode. Compared with an existing transformer, the transformer provided by the embodiment can be used for remarkably reducing the interference signal generated by the common mode voltage, and thus, common mode transient immunity of the transformer is improved.
Description
Technical field
The present invention relates to electrical equipment field, in particular to a kind of transformer and control drive system.
Background technology
Third generation semiconductor power device with compound semiconductors such as carborundum, gallium nitride as representative, switching speed is not
It is disconnected to improve, it is gradually ripe and enter market on a large scale；On the other hand, traditional silicon-based semiconductor devices, such as power are brilliant
Body pipe, insulation are deleted type FET etc. and also constantly obtain higher switching speed by the optimization of structure and technique.
Higher switching speed means that controlling drive system needs the higher common-mode voltage variation speed of tolerance.In control
In drive system, during by transformer transmission signal, high common-mode voltage variation speed easily causes by wrong caused by displacement current
Error signal, causes thrashing or maloperation.
In prior art, transformer avoids the pair of displacement current inflow transformer often through secondary shielding construction is introduced
Sideline is enclosed, and reduces the ohm voltage drop that displacement current is produced in secondary coil by way of eliminating and being electrically coupled.However, displacement current
Also the main sideline circle of transformer is flowed through simultaneously, so as to produce signal in main sideline circle.The signal is by main sideline circle and secondary line
Magnetic coupling between circle is coupled to secondary coil, can equally cause secondary coil to receive the signal of interference.
The content of the invention
In view of this, a kind of transformer and control drive system are embodiments provided, to improve existing transformation
The magnetic coupling that the signal of device is enclosed and secondary coil between due to main sideline, causes secondary coil to receive the deficiency of interference signal.
For achieving the above object, the embodiment of the present invention provides following technical scheme：
A kind of transformer, including：Main sideline circle, main side shielding construction, secondary coil and secondary shielding construction, the pair
Sideline circle is arranged at and the main corresponding position of sideline circle, the main side shielding construction be arranged at the main sideline enclose with it is described
Between secondary coil, the secondary shielding construction is arranged between the main side shielding construction and the secondary coil, the master
One end of sideline circle is connected with the main side shielding construction, and one end of the secondary coil is connected with the secondary shielding construction.
The embodiment of the present invention additionally provides a kind of control drive system, including above-mentioned transformer.
Transformer provided in an embodiment of the present invention and control drive system have the beneficial effect that：
Transformer provided in an embodiment of the present invention and control drive system include main sideline circle, main side shielding construction, secondary
Coil and secondary shielding construction.Secondary coil is arranged at and the main sideline corresponding position of circle, and main side shielding construction is arranged at master
Sideline is enclosed and secondary coil between, and secondary shielding construction is arranged between main side shielding construction and secondary coil.Main sideline circle with
The connection of main side shielding construction, secondary coil are connected with secondary shielding construction, the displacement current of common-mode voltage generation can directly from
Transmitter flows into main side shielding construction, and the magnetic field that displacement current is produced when main side shielding construction is flowed through is less, therefore hardly
Interference signal can be delivered to by secondary coil by magnetic-coupled mode.Transformer provided in an embodiment of the present invention and existing change
Depressor is compared, and can be obviously reduced the interference signal of common-mode voltage generation, so as to the common mode transient state for improving transformer suppresses
(Common Mode Transient Immunity)。
Description of the drawings
For the clearer explanation embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of transformer provided in an embodiment of the present invention；
Fig. 2 is the profile of the part-structure of transformer provided in an embodiment of the present invention；
Fig. 3 is the equivalent circuit diagram of transformer provided in an embodiment of the present invention；
Fig. 4 is that a kind of structure of specific embodiment of the main side shielding construction of transformer provided in an embodiment of the present invention is shown
It is intended to；
Fig. 5 is the structure of another kind of specific embodiment of the main side shielding construction of transformer provided in an embodiment of the present invention
Schematic diagram；
Fig. 6 is the structure of another specific embodiment of the main side shielding construction of transformer provided in an embodiment of the present invention
Sterogram.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is right below
The detailed description of the embodiments of the invention for providing in the accompanying drawings is not intended to limit the scope of claimed invention, but
It is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not making creativeness
The every other embodiment obtained on the premise of work, belongs to the scope of protection of the invention.
Details refer to Fig. 1, and Fig. 1 shows transformer provided in an embodiment of the present invention 100, and the transformer 100 includes master
Sideline circle 110, main side shielding construction 120, secondary coil 130 and secondary shielding construction 140.
Main sideline circle 110 is spirality metal wire, is specifically as follows the helical structure of individual layer.Main sideline circle 110
Coil shape and the number of turn can determine according to the inductance and resistance value that are embodied as needing, not limit in the present embodiment.It is main
The two ends of sideline circle 110 are connected with transmitter circuit, and transmitter circuit produces the electric current of change to produce in main sideline circle 110
The magnetic flux of alternation.
Secondary coil 130 is spirality metal wire, and secondary coil 130 is set to longitudinally-aligned with main sideline circle 110.It is excellent
Selection of land, projection of the main sideline circle 110 in longitudinal direction are substantially overlapped in longitudinal projection with secondary coil 130.The line of secondary coil 130
Loop-shaped and the number of turn can determine according to actual enforcement demand, not limit in the present embodiment.The two ends of secondary coil 130
It is connected with acceptor circuit.
Main side shielding construction 120 is arranged between main sideline circle 110 and secondary coil 130, and main side shielding construction 120 can
Think the flaky texture of at least one of which metal level composition.Above-mentioned metal level is specifically as follows with multiple openings and gap
Foil structures.One end of main side shielding construction 120 and main sideline circle 110 be connected, specifically, main side shielding construction 120 and
One end of main sideline circle 110 exchanges altogether.
It is main based on the shield ranges of shielding construction 120 while shielding construction 120 vertical direction projection.Preferably, it is main
The shield ranges of side shielding construction 120 are roughly the same with the profile of main sideline circle 110.Preferably, it is main in shielding construction and it is main while
Coil overlapping area in the vertical accounts for more than the 60% of main side area coil.
Secondary shielding construction 140 is arranged between main side shielding construction 120 and secondary coil 130, secondary shielding construction
140 can be the laminated structure of at least one of which metal level composition.Above-mentioned metal level is specifically as follows with multiple openings and seam
The foil structures of gap.Secondary shielding construction 140 is connected with one end of secondary coil 130, specifically, secondary shielding construction
140 are exchanged altogether with secondary coil 130.
The shield ranges of secondary shielding construction 140 are projection of the secondary shielding construction 140 in vertical direction.Preferably, it is secondary
The shield ranges of side shielding construction 140 are roughly the same with the profile of secondary coil 130.
Main side shielding construction 120 is arranged between main sideline circle 110 and secondary coil 130, and secondary shielding construction 140 is arranged
Between main side shielding construction 120 and secondary coil 130, i.e., main sideline circle 110, main side shielding construction 120, secondary shielding construction
140 and the vertical stack successively of secondary coil 130.
Details refer to Fig. 2, are additionally provided with first medium layer 150 between main sideline circle 110 and main side shielding construction 120,
Preferably, main sideline circle 110 can be connected by the connecting portion 180 being arranged in first medium layer 150 with main side shielding construction 120
Connect.The 3rd dielectric layer 170 is additionally provided between secondary coil 130 and secondary shielding construction 140, it is preferable that secondary coil 130 with
Secondary shielding construction 140 can be connected by the connecting portion 180 being arranged in the 3rd dielectric layer 170.Main side shielding construction 120 with
Second dielectric layer 160 is provided between secondary shielding construction 140.Second dielectric layer 160 is resistant to the height between acceptor side and secondary
Voltage difference, plays a part of isolation.Main side shielding construction 120 forms master by second dielectric layer 160 with secondary shielding construction 140
Parasitic coupling capacitance between side and secondary.Secondary coil 130 is arranged at the surface of substrate 190, that is, formed from bottom to top successively
Comprising secondary coil 130, secondary shielding construction 140, main side shielding construction 120, and main sideline circle 110 transformer.Optionally,
Main sideline circle 110 can also be placed in the surface of substrate 190, secondary coil 130 is placed in into the top of transformer 100；So as to shape
Into from top to bottom successively comprising secondary coil 130, secondary shielding construction 140, main side shielding construction 120, and main sideline circle 110
Transformer.
Details refer to Fig. 3, and Fig. 3 is the corresponding to transient state common-mode voltage of transformer provided in an embodiment of the present invention 100
Equivalent circuit diagram.
The leakage inductance of main sideline circle 110 is Lk, formed due to the inhomogeneities that displacement current is distributed on the circle of main sideline
Equivalent resistance is Rnp, the magnetizing inductance of transformer 100 is LM, main sideline is enclosed 110 coil and is equivalent to Lp.With main sideline circle 110
The transmitter circuit of connection is equivalent to voltage source 111 and internal resistance Rt.The output voltage of voltage source 112 represents common-mode voltage Vcm。
Common-mode voltage VcmThe displacement current of generation is Ip1+Ip2。
As the resistance that the inhomogeneities that displacement current is distributed on secondary coil 130 is formed is Rns, secondary coil 130
Coil is equivalent to Ls.The acceptor circuit being connected with secondary coil 130 is equivalent to decoding circuit 131 and metal-oxide-semiconductor 132, receiver
The voltage that circuit is received is Vr。
Main side shielding construction 120 and coupled capacitor Ci1、Ci2One end be connected, secondary shielding construction 140 and coupled capacitor
Ci1、Ci2The other end be connected.
When the current potential (i.e. the current potential of voltage source 112) of transmitter circuit occurs transient state to be changed, higher common mode can be produced
Voltage Vcm, as main sideline circle 110 is connected with main side shielding construction 120, i.e., main side shielding construction 120 is by coupled capacitor Ci1With
Ci2In main sideline, one end of circle 110 keeps exchanging altogether with transmitter, so by common-mode voltage VcmThe displacement current I of generationp1+
Ip2The coil of main sideline circle 110 is no longer flow through, but is directly flowed in main side shielding construction 120 from the ground potential of transmitter, then
Coupled capacitor C is flowed into via main side shielding construction 120i1And Ci2.Flow through coupled capacitor Ci1Displacement current Ip1And flow through coupling
Electric capacity Ci2Displacement current Ip2Ground terminal is flowed into after flowing through secondary shielding construction 140.
Displacement current Ip1+Ip2Main side shielding construction is flowed mostly to, and seldom flows through main sideline circle.And flow through main side shielding
The magnetic field that the electric current of structure 120 is produced is less, so hardly passing through magnetic coupling by common-mode voltage VcmThe interference letter of generation
Number it is delivered to secondary coil 130.After increasing main side shielding construction 120, the interference signal that common-mode voltage is produced due to magnetic coupling
Can be significantly weakened for.And secondary shielding construction 140 is used to avoid the secondary coil 130 of displacement current inflow transformer 100, lead to
Cross and eliminate the mode that is electrically coupled and reduce the ohm voltage drop that displacement current is produced in secondary coil 130.Therefore in common-mode voltage VcmProduce
Interference signal in, the ohm voltage drop that secondary coil 130 is produced is flowed through by displacement current, by secondary shielding construction 140 by disappearing
Except the mode being electrically coupled reduces；The variation magnetic field that main sideline circle 110 is produced is flowed through by displacement current, by main side shielding construction 120
Reduced guiding displacement current to main side shielding construction；Therefore common-mode voltage VcmProduce two parts of interference signal
Can be significantly weakened for, the common mode transient state that improve transformer 100 suppresses (Common Mode Transient
Immunity)。
In order to effectively shield the variation magnetic field of magnetic coupling generation, it is vortexed during main side shielding construction 120 should be reduced as far as possible
The inductance of main side shielding construction is produced and is made less than the inductance of main sideline circle.
Specifically, main side shielding construction 120 is the metal level with gap and multiple openings, is connected by multiple sheet metals
And formed.There is between sheet metal gap so that vortex cannot be by suppressing the technique effect being vortexed so as to reach.It is preferred that
, sheet metal can include the first stem portion being connected with earth point, can also include first be connected with the first stem portion
Branch.
Specifically, the electric induction of main side shielding construction 120 is when the inductance less than main sideline circle 110.I.e. from main side, shielding is tied
The electric induction that any point has to the corresponding current path of the main earth point in shielding construction 120 on structure 120 when less than it is main while
The inductance of coil 110.Preferably, the inductance of main side shielding construction 120 encloses the 30% of 110 inductance less than main sideline.
In the application, can be realized by main side shielding construction 120 is designed as following structure.
Details refer to Fig. 4, and Fig. 4 shows the main side shielding construction 120 of transformer provided in an embodiment of the present invention 100
A kind of specific embodiment.
Main side shielding construction 120 includes at least one arc-shaped conductor structure with opening, with two arcs in the present embodiment
As a example by shape conductor structure.Main side shielding construction 120 includes the first stem portion 121, and the arc-shaped conductor structure of the first stem portion 121 is
The first annular portion 1211 with opening and the second annular portion 1212 with opening, the diameter of the second annular portion 1212 are less than
The diameter of the first annular portion 1211.First annular portion 1211 is connected with the second annular portion 1212.The opening of the first annular portion 1211
Can be corresponding with the opening of the second annular portion 1212, it is also possible to do not correspond to, the aperture position of the first annular portion 1211 and
It is limitation of the present invention that the aperture position of two annular portions 1212 should not be construed.
First annular portion 1211 is the circular ring metal thin slice with opening, and 1211 points by the first annular portion of opening is two
End, at least one end in the two ends of the first annular portion 1211 is free end, i.e., other parts phase not with main side shielding construction 120
Connection.
The second annular portion 1212 also circular ring metal thin slice with opening, is open 1212 points of the second annular portion
For two ends, at least one end in the two ends of the second annular portion 1212 is free end, i.e., other portions not with main side shielding construction 120
Split-phase connects.In main side shielding construction 120, the longitudinal projection of the first annular portion 1211 and the second annular portion 1212 substantially covers
The scopes that main sideline circle 110 is overlapped.
As shown in figure 4, the A points that first stem portion 121 is exchanged altogether with main sideline circle 110 are connected, so as to have with A points
There is identical current potential.As main sideline circle 110 is spirality metal coil, and main side shielding construction 120 is the circle with opening
Circulus is constituted, so any point (such as the B points in Fig. 4) of the main side shielding construction 120 is to the current path between A points
Inductance value of the corresponding inductance value less than main sideline circle 110.Therefore, displacement current is when main side shielding construction 120 is flow through, in pair
The interference signal that sideline circle 130 is produced, when flowing through main sideline circle 110 less than displacement current, in the interference that secondary coil 130 is produced
Signal.Magnetic coupling between i.e. main side shielding construction 120 and secondary coil 130 less than main sideline circle 110 with secondary coil 130 it
Between magnetic coupling.
Simultaneously because the first annular portion 1211 and the second annular portion 1212 carry opening, therefore be conducive to reducing main side screen
The formation being vortexed in shield structure 120, does not affect the magnetic field produced during 100 normal work of transformer.
Details refer to Fig. 5, and Fig. 5 shows the main side shielding construction 220 of transformer provided in an embodiment of the present invention 100
Another kind of specific embodiment.
Main side shielding construction 220 also includes multiple first branches 222 being connected with the first stem portion 221.Such as Fig. 5 institutes
Show, the first stem portion 221 is the sheet metal of the circular ring with opening, i.e., the first stem portion 221 does not include closure ring,
First branch 222 is bullion thin slice, has certain gap between multiple first branches 222.These gaps pass through
The path of destruction vortex reaches the effect for suppressing vortex.
Multiple first branches 222 can be connected with the inner ring of circular ring, and multiple first branches 222 are equal
Can extend to the inner side of circular ring.First stem portion 221 and the first branch 222 of main side shielding construction 220
Longitudinal projection substantially covers encloses 110 Chong Die scopes with main sideline.
As shown in figure 5, it is A1 points that main side shielding construction 220 exchanges place altogether with main sideline circle 110, then, the main side screen
Any point (such as the B1 points in Fig. 5) of shield structure 220 is less than main side to the corresponding inductance value of current path between A1 points
The inductance value of coil 110.Therefore, displacement current is when main side shielding construction 220 is flow through, in the interference that secondary coil 130 is produced
Signal, when flowing through main sideline circle 110 less than displacement current, in the interference signal that secondary coil 130 is produced.I.e. main side shielding construction
Magnetic coupling between 220 and secondary coil 130 is less than the magnetic coupling between main sideline circle 110 and secondary coil 130.
Details refer to Fig. 6, and Fig. 6 shows the main side shielding construction 320 of transformer provided in an embodiment of the present invention 100
Another specific embodiment.
As shown in fig. 6, the first stem portion 321 is the conductor structure for extending radially.The present embodiment is with thin including four
As a example by the cross laminated structure of piece.Multiple first branches 322 are list structure.Have between multiple first branches 322
There is certain gap.These gaps reach the effect for suppressing vortex by destroying the path of vortex.
Multiple first branches 322 are connected with the first stem portion 321, and are prolonged to the direction away from the first stem portion 321
Stretch.The longitudinal projection of first stem portion 321 and the first branch 322 of main side shielding construction 320 substantially covers and main sideline
The scope that circle 110 is overlapped.
As shown in fig. 6, main side shielding construction 320 is exchanged with main sideline circle 110 is total to place for A2 points, the main side shielding construction
320 any point (such as the B2 points in Fig. 6) is to the corresponding inductance value of current path between A2 points less than main sideline circle 110
Inductance value.Therefore, displacement current is when main side shielding construction 320 is flow through, in the interference signal that secondary coil 130 is produced, little
When displacement current flows through main sideline circle 110, in the interference signal that secondary coil 130 is produced.I.e. main side shielding construction 320 and pair
Magnetic coupling between sideline circle 130 is less than the magnetic coupling between main sideline circle 110 and secondary coil 130.
The second branch that secondary shielding construction 140 is included the second stem portion and is connected with the second stem portion.Second
The quantity of branch can also be multiple, and the figure that the second stem portion is constituted with the second branch can be with the first stem portion 121
It is similar with the figure of the composition of the first branch 122, it is also possible to be made up of other structures.As long as meeting secondary shielding construction 140
Be shaped as inc open loop structure, it is limit to the present invention that the particular type of secondary shielding construction 140 should not be construed
System.
The embodiment of the present invention additionally provides a kind of control drive system, including above-mentioned transformer 100.
Transformer provided in an embodiment of the present invention 100 and control drive system include main sideline circle 110, main side shielding construction
120th, secondary coil 130 and secondary shielding construction 140.Secondary coil 130 is arranged at and encloses 110 corresponding positions with main sideline,
Main side shielding construction 120 is arranged between main sideline circle 110 and secondary coil 130, and secondary shielding construction 140 is arranged at main side screen
Between shield structure 120 and secondary coil 130.Main sideline circle 110 is connected with main side shielding construction 120, secondary coil 130 and secondary
Shielding construction 140 connects, and the displacement current that common-mode voltage is produced directly can flow into main side shielding construction 120, position from transmitter
The magnetic field that shifting electric current is produced when main side shielding construction 120 is flowed through is less, therefore hardly will be dry by magnetic-coupled mode
Signal transmission is disturbed to secondary coil 130.Transformer provided in an embodiment of the present invention 100, can compared with existing transformer 100
The interference signal of common-mode voltage generation is obviously reduced, so as to the common mode transient state for improving transformer 100 suppresses (Common Mode
Transient Immunity)。
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, above in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein
The component of example can be arranged and be designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention of the above to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment obtained under the premise of creative work is not made by technical staff, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then in subsequent accompanying drawing which further need not be defined and is explained.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, and not
Be indicate or imply the device or element of indication must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or one
The connection of body ground；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, can be with concrete condition understanding
State term concrete meaning in the present invention.
Claims (10)
1. a kind of transformer, it is characterised in that the transformer includes：Main sideline circle, main side shielding construction, secondary coil and
Secondary shielding construction, the secondary coil are arranged at and the main corresponding position of sideline circle, and the main side shielding construction is arranged
Between the main sideline circle and the secondary coil, the secondary shielding construction be arranged at the main side shielding construction with it is described
Between secondary coil,
One end of the main sideline circle is connected with the main side shielding construction, and one end of the secondary coil is shielded with the secondary
Structure connects.
2. transformer according to claim 1, it is characterised in that：The main side shielding construction includes the first stem portion.
3. transformer according to claim 2, it is characterised in that：First stem portion includes at least one with opening
Arc-shaped conductor structure.
4. transformer according to claim 2, it is characterised in that：First stem portion includes that what is extended radially leads
Body structure.
5. transformer according to claim 2, it is characterised in that：The main side shielding construction also includes and the described first master
Multiple first branches of cadre's connection.
6. transformer according to claim 5, it is characterised in that：First stem portion and with first stem portion
Multiple first branches of connection are sheet metal.
7. transformer according to claim 1, it is characterised in that：The inductance value of the main side shielding construction is less than the master
The inductance value of sideline circle.
8. transformer according to claim 1, it is characterised in that：The main sideline circle is spiral with the secondary coil
Shape coil.
9. transformer according to claim 1, it is characterised in that：One end of the main sideline circle and the main side shielding knot
Structure connects, and is grounded.
10. it is a kind of to control drive system, it is characterised in that to include the transformer as described in any one of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186073.XA CN106531414A (en) | 2016-12-20 | 2016-12-20 | Transformer and control and driving system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186073.XA CN106531414A (en) | 2016-12-20 | 2016-12-20 | Transformer and control and driving system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086119A (en) * | 2017-05-24 | 2017-08-22 | 成都线易科技有限责任公司 | Conductor structure and array of capacitors |
| CN108563279A (en) * | 2018-07-11 | 2018-09-21 | 重庆线易电子科技有限责任公司 | Filter circuit of pressure-stabilizing and signal deteching circuit |
| CN113258242A (en) * | 2021-06-22 | 2021-08-13 | 之江实验室 | Eight-path orthogonal power combiner based on transformer |
| CN113436866A (en) * | 2021-07-07 | 2021-09-24 | 新沂市向荣电子有限公司 | Micro transformer with shielding function for avoiding dipole radiation interference |
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| CN103794592A (en) * | 2012-10-30 | 2014-05-14 | 中芯国际集成电路制造(上海)有限公司 | Semiconductor device with ground shielding structure |
| CN104733166A (en) * | 2013-12-20 | 2015-06-24 | 三星电机株式会社 | Transformer and adapter |
| CN104240917A (en) * | 2014-09-26 | 2014-12-24 | 珠海市竞争电子科技有限公司 | Transformer for switching power supply of visual intercom system, and manufacturing method of transformer |
| CN205028764U (en) * | 2015-09-25 | 2016-02-10 | 大同Abb牵引变压器有限公司 | Traction transformer's shielding subassembly |
| CN106024340A (en) * | 2016-08-02 | 2016-10-12 | 成都线易科技有限责任公司 | Transformer with shielding structure |
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| CN107086119A (en) * | 2017-05-24 | 2017-08-22 | 成都线易科技有限责任公司 | Conductor structure and array of capacitors |
| CN107086119B (en) * | 2017-05-24 | 2023-02-17 | 成都线易科技有限责任公司 | Conductor structure and capacitor array |
| CN108563279A (en) * | 2018-07-11 | 2018-09-21 | 重庆线易电子科技有限责任公司 | Filter circuit of pressure-stabilizing and signal deteching circuit |
| CN113258242A (en) * | 2021-06-22 | 2021-08-13 | 之江实验室 | Eight-path orthogonal power combiner based on transformer |
| CN113258242B (en) * | 2021-06-22 | 2021-10-01 | 之江实验室 | Eight-path orthogonal power combiner based on transformer |
| CN113436866A (en) * | 2021-07-07 | 2021-09-24 | 新沂市向荣电子有限公司 | Micro transformer with shielding function for avoiding dipole radiation interference |
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Application publication date: 20170322 |