CN208848726U - Low bottom is made an uproar switch transformer and PLC power supply adaptor - Google Patents
Low bottom is made an uproar switch transformer and PLC power supply adaptor Download PDFInfo
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- CN208848726U CN208848726U CN201821929174.6U CN201821929174U CN208848726U CN 208848726 U CN208848726 U CN 208848726U CN 201821929174 U CN201821929174 U CN 201821929174U CN 208848726 U CN208848726 U CN 208848726U
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Abstract
The application provides a kind of low bottom and makes an uproar switch transformer and PLC power supply adaptor.The switch transformer includes winding bobbin, magnetic core, armature winding, the first shield winding, secondary windings, secondary shielding winding and third shield winding.Winding bobbin is hollow structure, core portion is accommodated in the hollow part of winding bobbin, armature winding, the first shield winding, secondary windings, secondary shielding winding and third shield winding are successively wound around on the outer wall corresponding with hollow part of winding bobbin, and are layered on top of each other together.Wherein the first shield winding is respectively used to the noise for shielding magnetic core and the stray magnetic field around winding bobbin for reducing the noise coupling between armature winding and secondary windings, secondary windings and armature winding electromagnetic induction, secondary shielding winding and third shield winding.The bottom of the switch transformer is made an uproar low, and adapter capable of reducing power source makes an uproar interference to the bottom of PLC rate, it is ensured that PLC damages the operating rate under environment in high chain.
Description
Technical field
This application involves PLC (Power Line Communication, power line communication) technical fields, specifically,
It is related to a kind of low bottom to make an uproar switch transformer and PLC power supply adaptor.
Background technique
PLC technology is a kind of communication party using power line transmission data information (for example, audio-frequency information, video information)
Formula, this communication mode need to be equipped with suitable power supply adaptor to obtain the specific data information on power line, and simultaneously this
Kind of communication mode make an uproar to the bottom of power supply adaptor require it is very high.PLC power supply adaptor used by industry mainstream is all at present
The mode for adding filter circuit at plant-grid connection unit carrys out the influence that blocking equipment itself bottom is made an uproar to PLC operating rate.But this
The bottom for the substantive device (for example, switch transformer) that kind PLC power supply adaptor itself includes, which is made an uproar, not to make moderate progress, when this
When PLC power supply adaptor is applied under high chain damage environment (for example, long range power line communication of high loss), filter circuit
Effect will be greatly lowered, and the bottom for the substantive device that PLC power supply adaptor itself includes, which is made an uproar, to cause PLC operating rate
It influences, so that the PLC operating rate under high chain damage environment is ineffective.
Utility model content
In order to overcome above-mentioned deficiency in the prior art, a kind of low bottom of being designed to provide of the application is made an uproar switch transformer
And PLC power supply adaptor, low bottom switch transformer of making an uproar can be greatly lowered itself bottom and make an uproar, and reduce PLC power supply adaptor pair
It makes an uproar interference at the bottom of PLC rate, it is ensured that PLC damages the operating rate under environment in high chain.
For transformer, the embodiment of the present application provides a kind of low bottom and makes an uproar switch transformer, is applied to power line communication PLC
Power supply adaptor, the switch transformer include winding bobbin, magnetic core, armature winding, the first shield winding, secondary windings,
Two shield windings and third shield winding；
The winding bobbin is hollow structure, and the core portion is accommodated in the hollow part of the winding bobbin, institute
State armature winding, first shield winding, the secondary windings, the secondary shielding winding and the third shield winding according to
On the outer wall corresponding with the hollow part of the secondary position for being wound around the winding bobbin, and it is layered on top of each other together；
Wherein, the armature winding is used to access alternating voltage outside the PLC power supply adaptor, and described first
Shield winding is for reducing the noise coupling between the armature winding and the secondary windings, described in the secondary windings penetrates
Alternating voltage after first shield winding and armature winding electromagnetic induction output transformation, the secondary shielding winding is for shielding
Covert states the noise of magnetic core, and the third shield winding is used to shield the stray magnetic field around the winding bobbin.
Optionally, in the embodiment of the present application, above-mentioned first shield winding is arranged in the armature winding and the secondary
Between winding, the voltage input end of one end of coil corresponding to first shield winding coil corresponding with the armature winding
It is electrically connected, the other end of coil corresponding to first shield winding is hanging, in the secondary windings and the primary
When winding electromagnetic induction, lower the capacitive coupling of the common-mode noise between the armature winding and the secondary windings.
Optionally, in the embodiment of the present application, the outside of the secondary windings is arranged in above-mentioned secondary shielding winding, described
The output ground terminal of one end of coil corresponding to secondary shielding winding coil corresponding with the armature winding is electrically connected, described
The other end of coil corresponding to secondary shielding winding is connect with the magnetic core, and the noise of the magnetic core is shielded to ground connection
End.
Optionally, in the embodiment of the present application, switch transformer described above further includes miscellaneous magnetic masking layer, the third screen
The outside that the secondary shielding winding is arranged in winding is covered, the miscellaneous magnetic masking layer is set on the outside of the third shield winding,
The output ground terminal of one end of coil corresponding to third shield winding coil corresponding with the armature winding is electrically connected,
The other end of coil corresponding to the third shield winding connects the miscellaneous magnetic masking layer, to cooperate the miscellaneous magnetic masking layer will
Stray magnetic field around the winding bobbin is shielded to ground terminal.
Optionally, in the embodiment of the present application, coil corresponding to above-mentioned third shield winding is using shielding copper wire winding
It is formed, the miscellaneous magnetic masking layer is fabricated using self-adhesion copper strips.
Optionally, in the embodiment of the present application, coil corresponding to above-mentioned secondary windings uses three layer insulation wire coiling shape
At.
For adapter, the embodiment of the present application provides a kind of PLC power supply adaptor, and the power supply adaptor includes exchange
Signal access unit, data extract modulation unit, voltage induced filter unit, pulse frequency ON/OFF modulation control unit, electricity
Pressure output rectification unit, Voltage Feedback control unit and any one above-mentioned low bottom are made an uproar switch transformer；
The AC signal access unit external electric power line, with obtain transmitted on the power line be loaded with data information
Ac current signal；
The data extract modulation unit and the AC signal access unit is electrically connected, for the alternating current
Data information on signal extracts, and carries out signal modulation to the data information extracted, obtains modulated data letter
Number；
The voltage induced filter unit and the AC signal access unit are electrically connected, for being based on the alternating current
It flows induction of signal and rectifies and obtain ac voltage signal, and obtained ac voltage signal is filtered；
Switch transformer make an uproar through the pulse frequency ON/OFF modulation control unit and voltage induced filter in the low bottom
Wave unit is electrically connected, and is electrically connected with the voltage output rectification unit, for by the voltage induced filter unit
The ac voltage signal after the pulse frequency ON/OFF modulation control cells modulate of filtering carries out transformation processing, and will become
Ac voltage signal after pressure is exported to the voltage output rectification unit, so that the voltage output rectification unit is to the change
The alternating voltage of corresponding output adaptation after ac voltage signal rectification after pressure；
The Voltage Feedback control unit and the modulation of the voltage output rectification unit and the pulse frequency ON/OFF are controlled
Unit processed is electrically connected, and the alternating voltage for being exported according to the voltage output rectification unit is to the pulse frequency ON/OFF
Modulation control unit feedback control instruction so that the pulse frequency ON/OFF modulation control unit according to the control instruction into
Row pulse frequency modulated.
Optionally, in the embodiment of the present application, it includes signal extraction loop and signal tune that above-mentioned data, which extract modulation unit,
Circuit processed；
The signal extraction loop from the ac current signal that the AC signal access unit receives for extracting
Corresponding data information out；
The signal modulation circuit and the signal extraction loop are electrically connected, for extracting to the signal extraction loop
Data information carry out signal modulation, obtain the data-signal of Corresponding matching.
Optionally, in the embodiment of the present application, above-mentioned voltage induced filter unit includes hot voltage sensor circuit, zero curve
Voltage sense circuit and current rectifying and wave filtering circuit；
The hot voltage sensor circuit and the neutral voltage sensor circuit are respectively used to induction and obtain the alternating current
Flow the hot voltage signal component and neutral voltage signal component of ac voltage signal corresponding to signal；
The current rectifying and wave filtering circuit and the hot voltage sensor circuit and the neutral voltage sensor circuit are electrically connected,
The hot voltage signal component and the neutral voltage signal component for obtaining to induction carry out rectification processing and noise
Filtering processing, obtains corresponding to filtered ac voltage signal.
Optionally, in the embodiment of the present application, above-mentioned voltage induced filter unit further includes electromagnetic interference EMI filtered electrical
Road；
The EMI filter circuit is arranged in the current rectifying and wave filtering circuit, the hot voltage sensor circuit and the zero curve
Between voltage sense circuit, and incude with the current rectifying and wave filtering circuit, the hot voltage sensor circuit and the neutral voltage
Circuit is electrically connected, hot voltage signal component and zero curve electricity for incuding to the hot voltage sensor circuit
Neutral voltage signal component that pressure sensitivity answers circuit inductance to obtain carries out EMI Filtering, and by the filtered hot voltage
Signal component and the neutral voltage signal component are sent to the current rectifying and wave filtering circuit.
In terms of existing technologies, low bottom provided by the embodiments of the present application is made an uproar switch transformer and PLC power supply adaptor
It has the advantages that low bottom switch transformer of making an uproar can be greatly lowered itself bottom and make an uproar, reduces PLC power supply adaptor pair
It makes an uproar interference at the bottom of PLC rate, it is ensured that PLC damages the operating rate under environment in high chain.Low bottom switch transformer of making an uproar is applied to
Power line communication PLC power supply adaptor, the switch transformer include winding bobbin, magnetic core, armature winding, first shielding around
Group, secondary windings, secondary shielding winding and third shield winding.The winding bobbin is hollow structure, and the core portion holds
It sets in the hollow part of the winding bobbin, it is the armature winding, first shield winding, the secondary windings, described
The position that secondary shielding winding and the third shield winding are successively wound around the winding bobbin is corresponding with the hollow part
Outer wall on, and be layered on top of each other together.Wherein, the armature winding is for accessing outside the PLC power supply adaptor
Alternating voltage, first shield winding for reducing the noise coupling between the armature winding and the secondary windings,
The secondary windings is through the alternating voltage after first shield winding and armature winding electromagnetic induction output transformation, institute
Secondary shielding winding is stated for shielding the noise of the magnetic core, the third shield winding is for shielding around the winding bobbin
Stray magnetic field, thus by matching between first shield winding, the secondary shielding winding and the third shield winding
The bottom for closing the reduction switch transformer is made an uproar, so that reducing using the PLC power supply adaptor for having the switch transformer to PLC speed
It makes an uproar interference at the bottom of rate, it is ensured that PLC damages the operating rate under environment in high chain.
To enable the above objects, features, and advantages of the application to be clearer and more comprehensible, the application preferred embodiment is cited below particularly,
And cooperate appended attached drawing, it is described in detail below.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of the claim of this application protection scope, for those of ordinary skill in the art, what is do not made the creative labor
Under the premise of, it can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is that low bottom provided by the embodiments of the present application is made an uproar the structural schematic diagram of switch transformer.
Fig. 2 is that low bottom provided by the embodiments of the present application is made an uproar the circuit diagram of switch transformer.
Fig. 3 is the block diagram of PLC power supply adaptor provided by the embodiments of the present application.
Fig. 4 is the block diagram that data shown in Fig. 3 provided by the embodiments of the present application extract modulation unit.
Fig. 5 is the block diagram of voltage induced filter unit shown in Fig. 3 provided by the embodiments of the present application.
Icon: 100- makes an uproar at low bottom switch transformer；110- winding bobbin；120- magnetic core；130- armature winding；140- first
Shield winding；150- secondary windings；160- secondary shielding winding；170- third shield winding；10-PLC power supply adaptor；11-
AC signal access unit；12- data extract modulation unit；13- voltage induced filter unit；14- pulse frequency ON/OFF tune
Control unit processed；15- voltage output rectification unit；16- Voltage Feedback control unit；121- signal extraction loop；122- signal
Modulation circuit；131- hot voltage sensor circuit；132- neutral voltage sensor circuit；133-EMI filter circuit；134- rectification filter
Wave circuit.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Application product using when the orientation or positional relationship usually put, be merely for convenience of description the application and simplify description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to the application.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.
With reference to the accompanying drawing, it elaborates to some embodiments of the application.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
Incorporated by reference to referring to Fig.1, Fig. 2 and Fig. 3, wherein Fig. 1 is that low bottom provided by the embodiments of the present application is made an uproar switch transformer 100
Structural schematic diagram, Fig. 2 is that low bottom provided by the embodiments of the present application is made an uproar the circuit diagram of switch transformer 100, and Fig. 3 is this Shen
Please embodiment provide PLC power supply adaptor 10 block diagram.In the embodiment of the present application, the low bottom, which is made an uproar, switchs transformation
Device 100 is applied to PLC power supply adaptor 10, handles for realizing the transformation of ac voltage signal, the switch wherein the low bottom is made an uproar
Transformer 100 can be greatly lowered itself bottom and make an uproar, and reduce PLC power supply adaptor 10 and make an uproar interference to the bottom of PLC rate, it is ensured that PLC
The operating rate under environment is damaged in high chain.
In the present embodiment, the low bottom make an uproar switch transformer 100 include winding bobbin 110, magnetic core 120, armature winding
130, the first shield winding 140, secondary windings 150, secondary shielding winding 160 and third shield winding 170, the low bottom are made an uproar out
Close transformer 100 by the winding bobbin 110, the magnetic core 120, the armature winding 130 and the secondary windings 150 it
Between cooperation realize transformation function, and pass through first shield winding 140, the secondary shielding winding 160 and the third
Shield winding 170 reduces the low bottom and makes an uproar switch transformer when the armature winding 130 and the secondary windings 150 are run
100 bottom is made an uproar, so that using there is the make an uproar PLC power supply adaptor 10 of switch transformer 100 of the low bottom to reduce to the bottom of PLC rate
It makes an uproar interference, it is ensured that PLC damages the operating rate under environment in high chain.
In the present embodiment, the winding bobbin 110 is hollow structure, and 120 part of magnetic core is accommodated in the coiling
It is the armature winding 130, first shield winding 140, the secondary windings 150, described in the hollow part of skeleton 110
Secondary shielding winding 160 and the third shield winding 170 be successively wound around the position of the winding bobbin 110 with it is described hollow
On the corresponding outer wall in position, and it is layered on top of each other together.In an embodiment of the present embodiment, the magnetic core 120 is iron
Ferrite core.
In the present embodiment, the armature winding 130 is used to access the exchange outside the PLC power supply adaptor 10
Voltage.The armature winding 130 is winding most close to the hollow part of the winding bobbin 110, it can be ensured that it is described it is primary around
The average length of every circle line of 130 corresponding coils of group is short as far as possible, so that the parasitic capacitance of the armature winding 130 is most
It is possible small, while the armature winding 130 can pass through first shield winding 140, the secondary shielding winding 160 and institute
The corresponding shielding action of third shield winding 170 is stated, the armature winding 130 and the PLC power supply adaptor 10 are reduced
In other neighbouring elements noise coupling.
In the present embodiment, first shield winding 140 is for reducing the armature winding 130 and the secondary windings
Noise coupling between 150.Optionally, first shield winding 140 setting the armature winding 130 and it is described it is secondary around
Between group 150, the electricity of one end of coil corresponding to first shield winding 140 coil corresponding with the armature winding 130
Input terminal is pressed to be electrically connected, the other end of coil corresponding to first shield winding 140 is hanging, in the secondary windings
150 with 130 electromagnetic induction of armature winding when, lower the common mode between the armature winding 130 and the secondary windings 150
The capacitive coupling of noise.Wherein, the voltage input end is the corresponding coil of the armature winding 130 for accessing from described
The higher one end of the voltage value of alternating voltage outside PLC power supply adaptor 10.
In the present embodiment, the secondary windings 150 is through first shield winding 140 and the armature winding 130
Electromagnetic induction exports the alternating voltage after transformation.Wherein, coil corresponding to the secondary windings 150 using three layer insulation wire around
System is formed, and is made full use of in winding process from the winding space at the winding bobbin 110, is corresponded to reducing itself
Parasitic capacitance.
In the present embodiment, the outside of the secondary windings 150 is arranged in the secondary shielding winding 160, and around patch
It closes on the secondary windings 150, for shielding the noise of the magnetic core 120.Optionally, 160 institute of secondary shielding winding
The output ground terminal of one end of corresponding coil coil corresponding with the armature winding 130 is electrically connected, the secondary shielding around
The other end of coil corresponding to group 160 is connect with the magnetic core 120, and the noise of the magnetic core 120 is shielded to ground terminal,
So that the low bottom is made an uproar the work of switch transformer 100 under quieter environment, reduces the low bottom and make an uproar the bottom of switch transformer 100
It makes an uproar.Wherein, the output ground terminal of the corresponding coil of the armature winding 130 is the corresponding coil of the armature winding 130 except voltage
The other end except input terminal.
In the present embodiment, the outside of the secondary shielding winding 160, and ring is arranged in the third shield winding 170
Around being fitted on the secondary shielding winding 160, for shielding the stray magnetic field around the winding bobbin 110, to reduce
It states low bottom described in PLC power supply adaptor 10 to make an uproar interference of the switch transformer 100 to proximate circuitry, reduces the proximate circuitry pair
The low bottom is made an uproar the interference of switch transformer 100, and then avoids generating EMI (Electromagnetic Interference, electricity
Magnetic disturbance) problem.
Optionally, in the embodiment of the present application, the low bottom make an uproar switch transformer 100 can also include miscellaneous magnetic masking layer,
The miscellaneous magnetic masking layer is set in 170 outside of third shield winding, coil corresponding to the third shield winding 170
The output ground terminal of one end coil corresponding with the armature winding 130 is electrically connected, corresponding to the third shield winding 170
The other end of coil connects the miscellaneous magnetic masking layer, to cooperate the miscellaneous magnetic masking layer will be miscellaneous around the winding bobbin 110
Magnetic field shielding is dissipated to ground terminal.In an embodiment of the present embodiment, coil corresponding to the third shield winding 170
It is formed using shielding copper wire winding, the miscellaneous magnetic masking layer is fabricated using self-adhesion copper strips.
In the present embodiment, switch transformer 100 is made an uproar by first shield winding 140, described second in the low bottom
The bottom that cooperation reduces itself between shield winding 160 and the third shield winding 170 is made an uproar, so that using there is the low bottom to make an uproar out
The PLC power supply adaptor 10 for closing transformer 100, which is reduced, makes an uproar interference to the bottom of PLC rate, it is ensured that work of the PLC under high chain damage environment
Make rate.
Referring once again to Fig. 3, in application embodiment, the PLC power supply adaptor 10 further includes that AC signal access is single
Member 11, data extract modulation unit 12, voltage induced filter unit 13, pulse frequency ON/OFF modulation control unit 14, voltage
Export rectification unit 15 and Voltage Feedback control unit 16.
In the present embodiment, the 11 external electric power line of AC signal access unit, is transmitted on the power line with obtaining
The ac current signal for being loaded with data information.
In the present embodiment, the data extract modulation unit 12 and the AC signal access unit 11 is electrically connected,
Signal modulation is carried out for extracting to the data information on the ac current signal, and to the data information extracted,
Obtain modulated data-signal.
It optionally, referring to figure 4., is that data shown in Fig. 3 provided by the embodiments of the present application extract modulation unit 12
Block diagram.In the present embodiment, it includes signal extraction loop 121 and signal modulation electricity that the data, which extract modulation unit 12,
Road 122.The signal extraction loop 121 from the ac current signal that the AC signal access unit 11 receives for mentioning
Take out corresponding data information.The signal modulation circuit 122 is electrically connected with the signal extraction loop 121, for institute
The data information for stating the extraction of signal extraction loop 121 carries out signal modulation, obtains the data-signal of Corresponding matching.
In the present embodiment, the voltage induced filter unit 13 is electrically connected with the AC signal access unit 11,
For incuding and rectifying to obtain ac voltage signal based on the ac current signal, and obtained ac voltage signal is carried out
Filtering, obtains filtered ac voltage signal.
It optionally, referring to figure 5., is voltage induced filter unit 13 shown in Fig. 3 provided by the embodiments of the present application
Block diagram.In the present embodiment, the voltage induced filter unit 13 includes hot voltage sensor circuit 131, zero curve electricity
Press sensor circuit 132 and current rectifying and wave filtering circuit 134.
The hot voltage sensor circuit 131 and the neutral voltage sensor circuit 132 be respectively used to induction obtain it is described
The hot voltage signal component and neutral voltage signal component of ac voltage signal corresponding to ac current signal.Wherein, institute
Stating hot voltage sensor circuit 131 includes firewire inductance, and the neutral voltage sensor circuit 132 includes zero curve inductance, the fire
Line voltage sensor circuit 131 incudes to obtain the hot voltage signal component, the neutral voltage sense by the firewire inductance
Circuit 132 is answered to incude to obtain the neutral voltage signal component by the zero curve inductance.
The current rectifying and wave filtering circuit 134 and the hot voltage sensor circuit 131 and the neutral voltage sensor circuit 132
It is electrically connected, the hot voltage signal component and the neutral voltage signal component for obtaining to induction carry out at rectification
Reason and noise filtering processing, obtain corresponding to filtered ac voltage signal.
In the present embodiment, the voltage induced filter unit 13 further includes EMI filter circuit 133.The EMI filtered electrical
Road 133 is arranged in the current rectifying and wave filtering circuit 134, the hot voltage sensor circuit 131 and the neutral voltage sensor circuit
Between 132, and with the current rectifying and wave filtering circuit 134, the hot voltage sensor circuit 131 and the neutral voltage sensor circuit
132 are electrically connected, hot voltage signal component and the zero curve for obtaining to the hot voltage sensor circuit 131 induction
Voltage sense circuit 132 incudes obtained neutral voltage signal component and carries out EMI Filtering, and by the filtered fire
Line voltage signal component and the neutral voltage signal component are sent to the current rectifying and wave filtering circuit 134, so that the rectification is filtered
Wave circuit 134 carries out rectification processing and noise to obtained the hot voltage signal component and the neutral voltage signal component
Filtering processing, obtains corresponding to filtered ac voltage signal.
In the present embodiment, switch transformer 100 is made an uproar through the pulse frequency ON/OFF modulation control unit in the low bottom
14 with the voltage induced filter unit 13 be electrically connected, and with the voltage output rectification unit 15 be electrically connected, for pair
By the voltage induced filter unit 13 filter through the modulated exchange of the pulse frequency ON/OFF modulation control unit 14
Voltage signal carries out transformation processing, and the ac voltage signal after transformation is exported to the voltage output rectification unit 15, with
Make the voltage output rectification unit 15 to the alternating current of corresponding output adaptation after the ac voltage signal rectification after the transformation
Pressure.Wherein, the voltage signal inputs of the pulse frequency ON/OFF modulation control unit 14 and voltage induced filtering are single
Member 13 is electrically connected, and the voltage signal output end of the pulse frequency ON/OFF modulation control unit 14 and the low bottom are made an uproar switch
The armature winding 130 of transformer 100 is electrically connected, and the low bottom is made an uproar the secondary windings 150 and the voltage of switch transformer 100
Rectification unit 15 is exported to be electrically connected.
In the present embodiment, the Voltage Feedback control unit 16 and the voltage output rectification unit 15 and the pulse
The feedback control end of frequency ON/OFF modulation control unit 14 is electrically connected, for defeated according to the voltage output rectification unit 15
Alternating voltage out is instructed to 14 feedback control of pulse frequency ON/OFF modulation control unit, so that the pulse frequency
ON/OFF modulation control unit 14 believes the alternating voltage that the voltage induced filter unit 13 exports according to the control instruction
Number carry out pulse frequency modulated (Pulse Frequency Modulation, PFM).
In the present embodiment, the PLC power supply adaptor 10 can pass through the filtering function of the voltage induced filter unit 13
Can and the make an uproar low bottom of switch transformer 100 of the low bottom make an uproar characteristic, reduce the PLC power supply adaptor 10 to the bottom of PLC rate
It makes an uproar interference, it is ensured that PLC damages the operating rate under environment in high chain.
In conclusion low bottom provided by the embodiments of the present application is made an uproar in switch transformer and PLC power supply adaptor, the low bottom
Switch transformer of making an uproar can be greatly lowered itself bottom and make an uproar, and reduce PLC power supply adaptor and make an uproar interference to the bottom of PLC rate, it is ensured that PLC
The operating rate under environment is damaged in high chain.Switch transformer make an uproar applied to power line communication PLC power supply adaptor, institute in the low bottom
Stating switch transformer includes winding bobbin, magnetic core, armature winding, the first shield winding, secondary windings, secondary shielding winding and
Three shield windings.The winding bobbin is hollow structure, and the core portion is accommodated in the hollow part of the winding bobbin,
The armature winding, first shield winding, the secondary windings, the secondary shielding winding and the third shield winding
It is successively wound around on the position outer wall corresponding with the hollow part of the winding bobbin, and is layered on top of each other together.Wherein,
The armature winding is used to access the alternating voltage outside the PLC power supply adaptor, and first shield winding is used for
The noise coupling between the armature winding and the secondary windings is reduced, the secondary windings penetrates first shield winding
Alternating voltage after exporting transformation with the armature winding electromagnetic induction, the secondary shielding winding is for shielding the magnetic core
Noise, the third shield winding is used to shield the stray magnetic field around the winding bobbin, to shield by described first
The bottom that cooperation reduces the switch transformer between winding, the secondary shielding winding and the third shield winding is made an uproar, and is led to
The cooperation with the filter function of the voltage induced filter unit in the PLC power supply adaptor is crossed, PLC power supply adaptor pair is reduced
It makes an uproar interference at the bottom of PLC rate, it is ensured that PLC damages the operating rate under environment in high chain.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
- The switch transformer 1. a kind of low bottom is made an uproar, which is characterized in that be applied to power line communication PLC power supply adaptor, the switch Transformer includes winding bobbin, magnetic core, armature winding, the first shield winding, secondary windings, secondary shielding winding and third shielding Winding；The winding bobbin is hollow structure, and the core portion is accommodated in the hollow part of the winding bobbin, described first Grade winding, first shield winding, the secondary windings, the secondary shielding winding and the third shield winding successively around It is located on the position outer wall corresponding with the hollow part of the winding bobbin, and is layered on top of each other together；Wherein, the armature winding is used to access the alternating voltage outside the PLC power supply adaptor, first shielding Winding penetrates described first for reducing the noise coupling between the armature winding and the secondary windings, the secondary windings Alternating voltage after shield winding and armature winding electromagnetic induction output transformation, the secondary shielding winding is for shielding institute The noise of magnetic core is stated, the third shield winding is used to shield the stray magnetic field around the winding bobbin.
- 2. switch transformer according to claim 1, which is characterized in thatFirst shield winding is arranged between the armature winding and the secondary windings, and the first shield winding institute is right The voltage input end of the one end for the coil answered coil corresponding with the armature winding is electrically connected, and the first shield winding institute is right The other end for the coil answered is hanging, in the secondary windings and when the armature winding electromagnetic induction, lower it is described it is primary around The capacitive coupling of common-mode noise between group and the secondary windings.
- 3. switch transformer according to claim 2, which is characterized in thatThe secondary shielding winding is arranged in the outside of the secondary windings, and one of coil corresponding to the secondary shielding winding Hold the output ground terminal electric connection of corresponding with armature winding coil, coil corresponding to the secondary shielding winding it is another One end is connect with the magnetic core, and the noise of the magnetic core is shielded to ground terminal.
- 4. switch transformer according to claim 3, which is characterized in thatThe switch transformer further includes miscellaneous magnetic masking layer, and the outer of the secondary shielding winding is arranged in the third shield winding Side, the miscellaneous magnetic masking layer are set on the outside of the third shield winding, one end of coil corresponding to third shield winding with The output ground terminal that the armature winding corresponds to coil is electrically connected, the other end of coil corresponding to the third shield winding The miscellaneous magnetic masking layer is connected, to cooperate the miscellaneous magnetic masking layer that the stray magnetic field around the winding bobbin is shielded to ground connection End.
- 5. switch transformer according to claim 4, which is characterized in thatCoil corresponding to the third shield winding is formed using shielding copper wire winding, and the miscellaneous magnetic masking layer uses self-adhesion copper Band is fabricated.
- 6. switch transformer described in any one of -5 according to claim 1, which is characterized in thatCoil corresponding to the secondary windings is formed using three layer insulation wire coiling.
- 7. a kind of PLC power supply adaptor, which is characterized in that the power supply adaptor includes that AC signal access unit, data mention Take modulation unit, voltage induced filter unit, pulse frequency ON/OFF modulation control unit, voltage output rectification unit, voltage Low bottom described in any one of feedback control unit and claim 1-6 is made an uproar switch transformer；The AC signal access unit external electric power line, to obtain the friendship for being loaded with data information transmitted on the power line Flow current signal；The data extract modulation unit and the AC signal access unit is electrically connected, for the ac current signal On data information extract, and signal modulation is carried out to the data information that extracts, obtains modulated data-signal；The voltage induced filter unit and the AC signal access unit are electrically connected, for being believed based on the alternating current Number incude and rectify to obtain ac voltage signal, and obtained ac voltage signal is filtered；Switch transformer make an uproar through the pulse frequency ON/OFF modulation control unit and voltage induced filtering list in the low bottom Member is electrically connected, and is electrically connected with the voltage output rectification unit, for by the voltage induced filtering unit filters Ac voltage signal after the pulse frequency ON/OFF modulation control cells modulate carry out transformation processing, and will be after transformation Ac voltage signal export to the voltage output rectification unit so that after the voltage output rectification unit is to the transformation Ac voltage signal rectification after corresponding output adaptation alternating voltage；The Voltage Feedback control unit and the voltage output rectification unit and the pulse frequency ON/OFF modulation control list Member is electrically connected, and the alternating voltage for being exported according to the voltage output rectification unit is modulated to the pulse frequency ON/OFF Control unit feedback control instruction, so that the pulse frequency ON/OFF modulation control unit carries out arteries and veins according to the control instruction Rush frequency modulation(PFM).
- 8. power supply adaptor according to claim 7, which is characterized in that it includes that signal mentions that the data, which extract modulation unit, Take loop and signal modulation circuit；The signal extraction loop from the ac current signal that the AC signal access unit receives for extracting pair The data information answered；The signal modulation circuit and the signal extraction loop are electrically connected, the number for extracting to the signal extraction loop It is believed that breath carries out signal modulation, the data-signal of Corresponding matching is obtained.
- 9. power supply adaptor according to claim 7 or 8, which is characterized in that the voltage induced filter unit includes fire Line voltage sensor circuit, neutral voltage sensor circuit and current rectifying and wave filtering circuit；The hot voltage sensor circuit and the neutral voltage sensor circuit are respectively used to induction and obtain the alternating current letter The hot voltage signal component and neutral voltage signal component of ac voltage signal corresponding to number；The current rectifying and wave filtering circuit and the hot voltage sensor circuit and the neutral voltage sensor circuit are electrically connected, and are used for The hot voltage signal component and the neutral voltage signal component obtain to induction carries out rectification processing and noise filtering Processing, obtains corresponding to filtered ac voltage signal.
- 10. power supply adaptor according to claim 9, which is characterized in that the voltage induced filter unit further includes electricity Magnetic disturbance EMI filter circuit；The EMI filter circuit is arranged in the current rectifying and wave filtering circuit, the hot voltage sensor circuit and the neutral voltage Between sensor circuit, and with the current rectifying and wave filtering circuit, the hot voltage sensor circuit and the neutral voltage sensor circuit It is electrically connected, hot voltage signal component and the neutral voltage sense for incuding to the hot voltage sensor circuit The neutral voltage signal component of answering circuit inductance to obtain carries out EMI Filtering, and by the filtered hot voltage signal Component and the neutral voltage signal component are sent to the current rectifying and wave filtering circuit.
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| CN201821929174.6U CN208848726U (en) | 2018-11-21 | 2018-11-21 | Low bottom is made an uproar switch transformer and PLC power supply adaptor |
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| CN201821929174.6U CN208848726U (en) | 2018-11-21 | 2018-11-21 | Low bottom is made an uproar switch transformer and PLC power supply adaptor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740615A (en) * | 2020-06-13 | 2020-10-02 | 深圳市海洋王照明工程有限公司 | Temperature and humidity detection device and switching power supply circuit thereof |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740615A (en) * | 2020-06-13 | 2020-10-02 | 深圳市海洋王照明工程有限公司 | Temperature and humidity detection device and switching power supply circuit thereof |
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