CN205786836U - Power transducer - Google Patents
Power transducer Download PDFInfo
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- CN205786836U CN205786836U CN201620477123.9U CN201620477123U CN205786836U CN 205786836 U CN205786836 U CN 205786836U CN 201620477123 U CN201620477123 U CN 201620477123U CN 205786836 U CN205786836 U CN 205786836U
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- resistance
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- signal conditioning
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Abstract
The utility model discloses a kind of power transducer, including current signal conditioning circuit, voltage signal conditioning circuit, AB phase circuit for power conversion, CB phase circuit for power conversion, add circuit, amplifying circuit, current output circuit and the ac buck circuit for power supply；The outfan of current signal conditioning circuit and voltage signal conditioning circuit all electrically connects with AB phase circuit for power conversion, the outfan of current signal conditioning circuit and voltage signal conditioning circuit all electrically connects with CB phase circuit for power conversion, the outfan of AB phase circuit for power conversion and CB phase circuit for power conversion all electrically connects with the input of add circuit, and the outfan of add circuit, amplifying circuit and current output circuit are sequentially connected electrically.It is high that this utility model has precision, low price, the feature of failure rate is low.
Description
Technical field
This utility model relates to power transducer technical field, especially relates to a kind of precision height, low price, fault rate
Low power transducer.
Background technology
Power transducer is a kind of for being transformed to join with active power, power factor etc. by input voltage, current signal
Measuring into the measurement apparatus of the standard volume output of fixed function relation, the signal of output is easy to secondary device and is used.
The most common power transducer is imported product, and imported product exists expensive, easily occurs
Fault, and the problem that fault is not easily repaired.
Summary of the invention
Goal of the invention of the present utility model is to overcome power transducer of the prior art expensive, easily occurring
The deficiency of fault, it is provided that a kind of precision height, low price, the power transducer of failure rate is low.
To achieve these goals, this utility model is by the following technical solutions:
A kind of power transducer, including current signal conditioning circuit, voltage signal conditioning circuit, AB phase power conversion electricity
Road, CB phase circuit for power conversion, add circuit, amplifying circuit, current output circuit and the ac buck circuit for power supply；Electricity
The outfan of stream signal conditioning circuit and voltage signal conditioning circuit all electrically connects with AB phase circuit for power conversion, and current signal is adjusted
Reason circuit and the outfan of voltage signal conditioning circuit all electrically connect with CB phase circuit for power conversion, AB phase circuit for power conversion with
The outfan of CB phase circuit for power conversion all electrically connects with the input of add circuit, the outfan of add circuit, amplifying circuit
It is sequentially connected electrically with current output circuit.
Current signal conditioning circuit of the present utility model and voltage signal conditioning circuit respectively by input current signal and
Voltage signal carries out conversion process, and AB phase circuit for power conversion is mainly used for Voltage to current transducer corresponding after conditioning as real
The active power on border, CB phase circuit for power conversion is also the actual active power for changing CB phase.Add circuit is mainly handle
Each phase power is added, and amplifying circuit corresponds to the voltage signal of power after will add up and is amplified to required for rear class output circuit
Value, current output circuit corresponding power voltage signal is converted to 4～20mA current signals output.
The high accuracy JFET amplifier that this utility model selection low-power consumption, low temperature waft, perfect input and output protection circuit,
The reasonably principle of optimality and placement-and-routing, it is ensured that the low cost of product, less trouble and high accuracy.
As preferably, described voltage signal conditioning circuit includes resistance R29, resistance R30, resistance R31, resistance R32, resistance
R33 and resistance R34, voltage transformer pt 1 and voltage transformer pt 2；Resistance R31 one end electrically connects with A phase voltage, resistance R31
The other end, resistance R32 summation current transformer PT1 are sequentially connected electrically；Resistance R33 one end electrically connects with C phase voltage, and resistance R33 is another
One end, resistance R34 summation current transformer PT2 are sequentially connected electrically, and resistance R29 one end electrically connects with current transformer PT1, resistance
R29 other end ground connection；Resistance R30 one end electrically connects with current transformer PT2, resistance R30 other end ground connection；Current transformer
PT1 summation current transformer PT2 all electrically connects with A phase voltage.
As preferably, described add circuit includes resistance R3, resistance R4, electric capacity C14, electric capacity C15, speed-sensitive switch U5A, height
Speed switch U5B, diode D5, diode D6, diode D7 and diode D8；Electric capacity C15 one end, the negative pole of diode D5 and
The equal ground connection of positive pole of diode D6, the electric capacity C15 other end, resistance R3 one end all outfans with current signal conditioning circuit are electrically connected
Connecing, the negative pole of the resistance R3 other end, the positive pole of diode D5 and diode D6 all electrically connects with speed-sensitive switch U5B；Electric capacity C14 mono-
End, the negative pole of diode D8 and the equal ground connection of positive pole of diode D7, the electric capacity C14 other end, resistance R4 one end are all and current signal
The outfan electrical connection of modulate circuit, the negative pole of the resistance R4 other end, the positive pole of diode D8 and diode D7 is all opened with high speed
Closing U5A electrical connection, AB phase circuit for power conversion electrically connects with speed-sensitive switch U5B, CB phase circuit for power conversion and speed-sensitive switch U5A
Electrical connection.
As preferably, described current output circuit includes resistance R18, resistance R19, electric capacity C12, electric capacity C13, interface CD1,
Amplifier U2A and audion Q1；Resistance R19 one end electrically connects with the outfan of amplifying circuit, the resistance R19 other end respectively with electricity
Hold the in-phase input end electrical connection of C12 one end and amplifier U2A, electric capacity C12 other end ground connection, electric capacity C13 one end respectively with put
The outfan of big device U2A and the base stage electrical connection of audion Q1, the electric capacity C13 other end respectively with the anti-phase input of amplifier U2A
End, the emitter stage of audion Q1 and resistance R18 one end electrical connection, resistance R18 other end ground connection, the colelctor electrode of audion Q1 with connect
Mouth CD1 electrical connection.
As preferably, every road current signal conditioning circuit all includes Current Transmit 1 and resistance R27；Current transformer
2 input terminals of CT1 are connected with A phase current, and 2 lead-out terminals of Current Transmit 1 are electrically connected with resistance R27 two ends respectively
Connect.
As preferably, the voltage of the input signal of ac buck circuit is 115V, 220V, 450V or 690V.
Therefore, this utility model has the advantages that precision is high, low price, failure rate is low.
Accompanying drawing explanation
Fig. 1 is a kind of theory diagram of the present utility model；
Fig. 2 is a kind of circuit diagram of voltage signal conditioning circuit of the present utility model；
Fig. 3 is a kind of circuit diagram of current signal conditioning circuit of the present utility model；
Fig. 4 is a kind of circuit diagram of add circuit of the present utility model；
Fig. 5 is a kind of circuit diagram of current output circuit of the present utility model.
In figure: current signal conditioning circuit 1, voltage signal conditioning circuit 2, AB phase circuit for power conversion 3, CB phase power turn
Change circuit 4, add circuit 5, amplifying circuit 6, current output circuit 7.
Detailed description of the invention
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
Embodiment as shown in Figure 1 is a kind of power transducer, including current signal conditioning circuit 1, voltage signal conditioning
Circuit 2, AB phase circuit for power conversion 3, CB phase circuit for power conversion 4, add circuit 5, amplifying circuit 6, current output circuit 7 and
Ac buck circuit for power supply；The outfan of current signal conditioning circuit and voltage signal conditioning circuit all with AB phase power
Change-over circuit electrically connect, the outfan of current signal conditioning circuit and voltage signal conditioning circuit all with CB phase circuit for power conversion
Electrical connection, the outfan of AB phase circuit for power conversion and CB phase circuit for power conversion all electrically connects with the input of add circuit,
The outfan of add circuit, amplifying circuit and current output circuit are sequentially connected electrically.The electricity of the input signal of ac buck circuit
Pressure is 220V.
As in figure 2 it is shown, voltage signal conditioning circuit includes resistance R29, resistance R30, resistance R31, resistance R32, resistance R33
With resistance R34, current transformer PT1 summation current transformer PT2；Resistance R31 one end electrically connects with A phase voltage, resistance R31 another
End, resistance R32 summation current transformer PT1 are sequentially connected electrically；Resistance R33 one end electrically connects with C phase voltage, the resistance R33 other end,
Resistance R34 summation current transformer PT2 is sequentially connected electrically, and resistance R29 one end electrically connects with current transformer PT1, resistance R29 another
End ground connection；Resistance R30 one end electrically connects with current transformer PT2, resistance R30 other end ground connection；Current transformer PT1 and electric current
Transformer PT2 all electrically connects with A phase voltage.
As shown in Figure 4, add circuit includes resistance R3, resistance R4, electric capacity C14, electric capacity C15, speed-sensitive switch U5A, at a high speed
Switch U5B, diode D5, diode D6, diode D7 and diode D8；Electric capacity C15 one end, the negative pole of diode D5 and two poles
The equal ground connection of positive pole of pipe D6, the electric capacity C15 other end, resistance R3 one end all electrically connect with the outfan of current signal conditioning circuit,
The negative pole of the resistance R3 other end, the positive pole of diode D5 and diode D6 all electrically connects with speed-sensitive switch U5B；Electric capacity C14 one end,
The negative pole of diode D8 and the equal ground connection of positive pole of diode D7, the electric capacity C14 other end, resistance R4 one end are all nursed one's health with current signal
Circuit outfan electrical connection, the negative pole of the resistance R4 other end, the positive pole of diode D8 and diode D7 all with speed-sensitive switch U5A
Electrical connection, AB phase circuit for power conversion electrically connects with speed-sensitive switch U5B, and CB phase circuit for power conversion is electrically connected with speed-sensitive switch U5A
Connect.
As it is shown in figure 5, current output circuit includes resistance R18, resistance R19, electric capacity C12, electric capacity C13, interface CD1, put
Big device U2A and audion Q1；Resistance R19 one end electrically connects with the outfan of amplifying circuit, the resistance R19 other end respectively with electric capacity
C12 one end and amplifier U2A in-phase input end electrical connection, electric capacity C12 other end ground connection, electric capacity C13 one end respectively with amplification
The base stage electrical connection of the outfan of device U2A and audion Q1, the electric capacity C13 other end respectively with the inverting input of amplifier U2A,
The emitter stage of audion Q1 and the electrical connection of resistance R18 one end, resistance R18 other end ground connection, the colelctor electrode of audion Q1 and interface
CD1 electrically connects.Interface CD1 connects voltmeter or other can test the instrument of reactive power, power factor.
As it is shown on figure 3, every road current signal conditioning circuit all includes Current Transmit 1 and resistance R27；Current transformer
2 input terminals of CT1 are connected with A phase current, and 2 lead-out terminals of Current Transmit 1 are electrically connected with resistance R27 two ends respectively
Connect.
Work process of the present utility model is as follows:
Voltage is separately input to current signal corresponding voltage signal conditioning circuit and current signal conditioning circuit, 2
The output signal of road current signal conditioning circuit and voltage signal conditioning circuit all inputs AB phase circuit for power conversion, AB phase power
The output signal of change-over circuit and CB phase circuit for power conversion all inputs add circuit, and after add circuit superposition, output is total meritorious
Power signal carries out signal amplification to amplifying circuit, and the voltage signal after amplification is re-fed into current signal change-over circuit output 4
～the signal of 20mA.
Should be understood that the present embodiment is merely to illustrate this utility model rather than limits scope of the present utility model.In addition
Should be understood that this utility model can be made various by those skilled in the art after having read the content that this utility model is lectured
Changing or amendment, these equivalent form of values fall within the application appended claims limited range equally.
Claims (6)
1. a power transducer, is characterized in that, including current signal conditioning circuit (1), voltage signal conditioning circuit (2), AB
Phase circuit for power conversion (3), CB phase circuit for power conversion (4), add circuit (5), amplifying circuit (6), current output circuit (7)
With the ac buck circuit for power supply；The outfan of 2 road current signal conditioning circuits and voltage signal conditioning circuit is all and AB
Phase circuit for power conversion electrically connect, the outfan of 2 road current signal conditioning circuits and voltage signal conditioning circuit all with CB phase merit
Rate change-over circuit electrically connects, the outfan of AB phase circuit for power conversion and CB phase circuit for power conversion all with the input of add circuit
End electrical connection, the outfan of add circuit, amplifying circuit and current output circuit are sequentially connected electrically.
Power transducer the most according to claim 1, is characterized in that, described voltage signal conditioning circuit include resistance R29,
Resistance R30, resistance R31, resistance R32, resistance R33 and resistance R34, voltage transformer pt 1 and voltage transformer pt 2；Resistance R31
One end electrically connects with A phase voltage, and the resistance R31 other end, resistance R32 and voltage transformer pt 1 are sequentially connected electrically；Resistance R33 mono-
End electrically connects with C phase voltage, and the resistance R33 other end, resistance R34 and voltage transformer pt 2 are sequentially connected electrically, resistance R29 one end
Electrically connect with voltage transformer pt 1, resistance R29 other end ground connection；Resistance R30 one end electrically connects with voltage transformer pt 2, resistance
R30 other end ground connection；Voltage transformer pt 1 and voltage transformer pt 2 all electrically connect with A phase voltage.
Power transducer the most according to claim 1, is characterized in that, described add circuit includes resistance R3, resistance R4, electricity
Hold C14, electric capacity C15, speed-sensitive switch U5A, speed-sensitive switch U5B, diode D5, diode D6, diode D7 and diode D8；Electricity
Holding C15 one end, the negative pole of diode D5 and the equal ground connection of positive pole of diode D6, the electric capacity C15 other end, resistance R3 one end are all with electric
Stream signal conditioning circuit outfan electrical connection, the negative pole of the resistance R3 other end, the positive pole of diode D5 and diode D6 all with
Speed-sensitive switch U5B electrically connects；The equal ground connection of positive pole of electric capacity C14 one end, the negative pole of diode D8 and diode D7, electric capacity C14 is another
One end, resistance R4 one end all electrically connect with the outfan of current signal conditioning circuit, the resistance R4 other end, the positive pole of diode D8
All electrically connecting with speed-sensitive switch U5A with the negative pole of diode D7, AB phase circuit for power conversion electrically connects with speed-sensitive switch U5B, CB
Phase circuit for power conversion electrically connects with speed-sensitive switch U5A.
Power transducer the most according to claim 1, is characterized in that, described current output circuit includes resistance R18, resistance
R19, electric capacity C12, electric capacity C13, interface CD1, amplifier U2A and audion Q1；Resistance R19 one end and the outfan of amplifying circuit
Electrical connection, resistance R19 other end in-phase input end with electric capacity C12 one end and amplifier U2A respectively electrically connects, and electric capacity C12 is another
One end ground connection, electric capacity C13 one end electrically connects with the outfan of amplifier U2A and the base stage of audion Q1 respectively, electric capacity C13 another
End electrically connect with inverting input, the emitter stage of audion Q1 and resistance R18 one end of amplifier U2A respectively, resistance R18 another
End ground connection, the colelctor electrode of audion Q1 electrically connects with interface CD1.
Power transducer the most according to claim 1, is characterized in that, every road current signal conditioning circuit all includes that electric current is mutual
Sensor CT1 and resistance R27；2 input terminals of Current Transmit 1 are connected with A phase current, and 2 of Current Transmit 1 defeated
Go out terminal to electrically connect with resistance R27 two ends respectively.
6. according to the power transducer described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, the input letter of ac buck circuit
Number voltage be 115V, 220V, 450V or 690V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477123.9U CN205786836U (en) | 2016-05-23 | 2016-05-23 | Power transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477123.9U CN205786836U (en) | 2016-05-23 | 2016-05-23 | Power transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786836U true CN205786836U (en) | 2016-12-07 |
Family
ID=58115572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620477123.9U Expired - Fee Related CN205786836U (en) | 2016-05-23 | 2016-05-23 | Power transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342808A (en) * | 2018-11-07 | 2019-02-15 | 浙江涵普电力科技有限公司 | Generator intelligent power pick-up device |
-
2016
- 2016-05-23 CN CN201620477123.9U patent/CN205786836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342808A (en) * | 2018-11-07 | 2019-02-15 | 浙江涵普电力科技有限公司 | Generator intelligent power pick-up device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |