CN108508250A - A kind of precision isolated form Intelligent transformator - Google Patents
A kind of precision isolated form Intelligent transformator Download PDFInfo
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- CN108508250A CN108508250A CN201710105340.4A CN201710105340A CN108508250A CN 108508250 A CN108508250 A CN 108508250A CN 201710105340 A CN201710105340 A CN 201710105340A CN 108508250 A CN108508250 A CN 108508250A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
Abstract
The present invention relates to a kind of accurate isolated form Intelligent transformators, belong to transformer technical field；Current transformer acquisition module, isolation module, filter module, automatic detection module are equipped between the primary side bus current signal and slope compensation circuit；The current transformer acquisition module is connect with primary side bus current signal；The isolation module is connect with current transformer acquisition module；The slope compensation circuit is connect by current controling signal with control chip；The pair side output voltage signal is connect by light-coupled isolation module with voltage setting value comparison module；It is reasonable in design, and internal/external signal is combined, it is isolated by different isolated forms during before and after conveying, interference is reduced to minimum, by the way that its precision can be improved after slope compensation and amplification compensation, it is internal to set automatic control module certainly, it can automatically be repaired with self-test and feedback information, greatly improve use effect of mutual inductor.
Description
Technical field
The present invention relates to a kind of accurate isolated form Intelligent transformators, belong to transformer technical field.
Background technology
Mutual inductor (instrument transformer) is also known as instrument transformer, is current transformer and mutual induction of voltage
The general designation of device.Can high voltage be become to low-voltage, high current becomes low current, for measuring or protecting system.Its function is main
It is that at normal low voltage (100V) or standard small electric current, (5A or 1A are referred both to specified by high voltage or high current scaling transformation
Value), to realize standardization, the miniaturization of measuring instrumentss, protection equipment and automatic control equipment.Mutual inductor may further be used to simultaneously
High-voltage system is separated, to ensure the safety of the person and equipment.
With the continuous application of many new materials, also there are many new types in mutual inductor, and electromagnetic transformer obtains
Relatively adequately development, wherein core type current transformer is adapted to dry type, oil immersed type and gas-insulating type various structures
The growth requirement of power construction.However as the continuous growth of power transmission capabilities, the continuous improvement of network voltage grade and guarantor
Desired constantly improve is protected, general core type current transformer structure gradually exposes weakness incompatible therewith,
The weakness such as intrinsic volume is big, magnetic saturation, ferromagnetic resonance, dynamic range are small, and service band is narrow, it is difficult to completely be difficult to meet a new generation
The development need of Automation of Electric Systems, electric power digital network etc..
With the prosperity of science and technology, intelligent product is more and more, and mutual inductor has also gone on the road of intelligence, in intelligence
On the basis of, accurate is imperative, and due to can be influenced by context when mutual inductor use, so, isolation
Aspect is also urgently improved.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple in structure, reasonable design makes
With convenient accurate isolated form Intelligent transformator.
To achieve the above object, the technical solution adopted by the present invention is：It includes primary side bus current signal, secondary side output
Voltage signal, current transformer acquisition module, isolation module, filter module, automatic detection module, light-coupled isolation module, oblique wave
Compensation circuit, current controling signal, voltage setting value comparison module, voltage control signal, control chip, peripheral circuit, phase shift
Pwm control signal, pulse transformer, isolated drive circuit；Primary side bus current signal is connect with slope compensation circuit；The original
Current transformer acquisition module, isolation module, filter module, automatic is equipped between edges generating line current signal and slope compensation circuit
Detection module；The current transformer acquisition module is connect with primary side bus current signal；The isolation module and Current Mutual Inductance
Device acquisition module connects；The filter module is connect with isolation module；The automatic detection module respectively with filter module and tiltedly
Wave compensation circuit connects；The slope compensation circuit is connect by current controling signal with control chip；The pair side output electricity
Pressure signal is connect by light-coupled isolation module with voltage setting value comparison module；The voltage setting value comparison module passes through voltage
Control signal is connect with control chip；The control chip is connect with peripheral circuit；The control chip passes through phase-shift PWM controlled
Signal is connect with pulse transformer；Isolated drive circuit is equipped in the pulse transformer.
Preferably, the light-coupled isolation module is connect with differential amplification module.
Preferably, being equipped with rectification module, filter module and error amplification module in the slope compensation circuit.
Preferably, in the isolated drive circuit be equipped with shaping circuit, detection comparison circuit, restrain amplifying circuit and
Pulse modulated circuit.
Preferably, self-checking circuit and feedback circuit are equipped in the automatic detection module, and self-checking circuit and feedback electricity
Lu Junyu controls chip connection, automatic reparation circuit is additionally provided in automatic detection module, and that repairs circuit and control automatically
Chip is connected with each other.
The operation principle of the present invention：It utilizes the combination of primary current signal and secondary voltage signal, bucket electric current and voltage
Acquisition, using slope compensation circuit and contrast module is respectively enterd after different isolation, in electric current and voltage control signal
Under the action of by information with control chip connect, control chip connecting inner electric current, information of voltage and the circuit of periphery pass through
Signal after combination is delivered to main circuit by the neutralization of the isolated drive circuit of pulse transformer and opened by phase-shift PWM controlled signal
It closes.
With the above structure, the present invention has the beneficial effect that：A kind of accurate isolated form Intelligent transformator of the present invention,
It is reasonable in design, using convenient, stability height, and internal/external signal is combined, passes through difference in the process before and after conveying
Isolated form be isolated, interference is reduced to minimum, by the way that its precision can be improved after slope compensation and amplification compensation
Degree, internal automatically to be repaired with self-test and feedback information from automatic control module is set, greatly improve mutual inductor uses work(
Effect.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the present invention；
Reference sign：
Primary side bus current signal 1, secondary side output voltage signal 2, current transformer acquisition module 3, isolation module 4, filter
Wave module 5, automatic detection module 6, light-coupled isolation module 7, slope compensation circuit 8, current controling signal 9, voltage setting value ratio
Compared with module 10, voltage control signal 11, control chip 12, peripheral circuit 13, phase-shift PWM controlled signal 14, pulse transformer 15,
Isolated drive circuit 16.
Specific implementation mode
The present invention will be further described below with reference to the drawings.
Referring to as shown in Figure 1, present embodiment include primary side bus current signal 1, secondary side output voltage signal 2,
Current transformer acquisition module 3, isolation module 4, filter module 5, automatic detection module 6, light-coupled isolation module 7, oblique wave compensation
Circuit 8, current controling signal 9, voltage setting value comparison module 10, voltage control signal 11, control chip 12, peripheral circuit
13, phase-shift PWM controlled signal 14, pulse transformer 15, isolated drive circuit 16；Primary side bus current signal 1 and oblique wave compensation
Circuit 8 connects；Between the primary side bus current signal 1 and slope compensation circuit 8 be equipped with current transformer acquisition module 3, every
From module 4, filter module 5, automatic detection module 6；The current transformer acquisition module 3 connects with primary side bus current signal 1
It connects；The isolation module 4 is connect with current transformer acquisition module 3；The filter module 5 is connect with isolation module 4；It is described from
Dynamic detection module 6 is connect with filter module 5 and slope compensation circuit 8 respectively；The slope compensation circuit 8 is believed by current control
Numbers 9 connect with control chip 12；The mould compared with voltage setting value by light-coupled isolation module 7 of pair side output voltage signal 2
Block 10 connects；The voltage setting value comparison module 10 is connect by voltage control signal 11 with control chip 12；The control
Chip 12 is connect with peripheral circuit 13；The control chip 12 is connect by phase-shift PWM controlled signal 14 with pulse transformer 15；
Isolated drive circuit 16 is equipped in the pulse transformer 15.
Wherein, the light-coupled isolation module 7 is connect with differential amplification module；Rectification is equipped in the slope compensation circuit 8
Module, filter module and error amplification module；It is equipped with shaping circuit in the isolated drive circuit 16, detection comparison circuit, leads
Amplifying circuit and pulse modulated circuit processed；Self-checking circuit and feedback circuit, and self-test electricity are equipped in the automatic detection module 6
Road is connect with control chip 12 with feedback circuit, automatic reparation circuit is additionally provided in automatic detection module 6, and that is repaiied automatically
Compound circuit is connected with each other with control chip 12.
Present embodiment utilizes the combination of primary current signal and secondary voltage signal, bucket electric current and voltage to adopt
Collection, using slope compensation circuit and contrast module is respectively enterd after different isolation, in the work of electric current and voltage control signal
Information is connect with control chip with lower, electric current, information of voltage and the circuit of periphery of control chip connecting inner pass through phase shift
Signal after combination is delivered to main circuit switch by pwm control signal by the neutralization of the isolated drive circuit of pulse transformer.
With the above structure, present embodiment has the beneficial effect that：A kind of precision described in present embodiment
Isolated form Intelligent transformator, it is reasonable in design, using convenient, stability height, and internal/external signal is combined, before and after conveying
It is isolated in the process by different isolated forms, interference is reduced to minimum, is compensated by slope compensation and amplification
After can improve its precision, it is internal from automatic control module is set, can automatically be repaired with self-test and feedback information, greatly be improved
Use effect of mutual inductor.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of precision isolated form Intelligent transformator, it is characterised in that：It includes primary side bus current signal, secondary side output voltage
Signal, current transformer acquisition module, isolation module, filter module, automatic detection module, light-coupled isolation module, oblique wave compensation
Circuit, current controling signal, voltage setting value comparison module, voltage control signal, control chip, peripheral circuit, phase-shift PWM control
Signal processed, pulse transformer, isolated drive circuit；Primary side bus current signal is connect with slope compensation circuit；The primary side is female
Current transformer acquisition module, isolation module, filter module, automatic detection are equipped between line current signal and slope compensation circuit
Module；The current transformer acquisition module is connect with primary side bus current signal；The isolation module is adopted with current transformer
Collect module connection；The filter module is connect with isolation module；The automatic detection module is mended with filter module and oblique wave respectively
Repay circuit connection；The slope compensation circuit is connect by current controling signal with control chip；The pair side output voltage letter
It number is connect with voltage setting value comparison module by light-coupled isolation module；The voltage setting value comparison module is controlled by voltage
Signal is connect with control chip；The control chip is connect with peripheral circuit；The control chip passes through phase-shift PWM controlled signal
It is connect with pulse transformer；Isolated drive circuit is equipped in the pulse transformer.
2. a kind of accurate isolated form Intelligent transformator according to claim 1, it is characterised in that：The light-coupled isolation module
It is connect with differential amplification module.
3. a kind of accurate isolated form Intelligent transformator according to claim 1, it is characterised in that：The slope compensation circuit
In be equipped with rectification module, filter module and error amplification module.
4. a kind of accurate isolated form Intelligent transformator according to claim 1, it is characterised in that：The isolated drive circuit
In be equipped with shaping circuit, detection comparison circuit, restrain amplifying circuit and pulse modulated circuit.
5. a kind of accurate isolated form Intelligent transformator according to claim 1, it is characterised in that：The automatic detection module
In be equipped with self-checking circuit and feedback circuit, and self-checking circuit and feedback circuit with control chip and connect, in automatic detection module
It is additionally provided with automatic reparation circuit, and that automatic reparation circuit and control chip interconnection.
6. a kind of accurate isolated form Intelligent transformator according to claim 1, it is characterised in that：It is believed using primary current
Number and secondary voltage signal combination, the acquisition of bucket electric current and voltage, using respectively enteing slope compensation after different isolation
Information is connect by circuit and contrast module under the action of electric current is with voltage control signal with control chip, and control chip combines
Signal after combination is passed through pulse transforming by internal electric current, information of voltage and the circuit of periphery by phase-shift PWM controlled signal
The neutralization of the isolated drive circuit of device is delivered to main circuit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105340.4A CN108508250A (en) | 2017-02-26 | 2017-02-26 | A kind of precision isolated form Intelligent transformator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105340.4A CN108508250A (en) | 2017-02-26 | 2017-02-26 | A kind of precision isolated form Intelligent transformator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108508250A true CN108508250A (en) | 2018-09-07 |
Family
ID=63373937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105340.4A Withdrawn CN108508250A (en) | 2017-02-26 | 2017-02-26 | A kind of precision isolated form Intelligent transformator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108508250A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7026851B2 (en) * | 2004-05-12 | 2006-04-11 | System General Corp. | PWM controller having frequency jitter for power supplies |
| CN101170295A (en) * | 2007-09-25 | 2008-04-30 | 北京航空航天大学 | A flying wheel electromotor control system with magnetic suspending reaction |
| CN101264545A (en) * | 2008-04-30 | 2008-09-17 | 北京工业大学 | Controlling circuit of zero voltage zero current soft-switching arc welding inverter |
| CN201869102U (en) * | 2010-12-06 | 2011-06-15 | 山东大学 | DC/DC changer of photovoltaic high-frequency isolating boosting soft switch |
| CN102364855A (en) * | 2011-06-30 | 2012-02-29 | 成都芯源系统有限公司 | Switch converter and control circuit and control method thereof |
| CN103414354A (en) * | 2013-07-16 | 2013-11-27 | 燕山大学 | Power switch device pulse transformer isolation driving circuit |
| CN104767212A (en) * | 2015-02-13 | 2015-07-08 | 国家电网公司 | Hybrid power electronic transformer |
-
2017
- 2017-02-26 CN CN201710105340.4A patent/CN108508250A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7026851B2 (en) * | 2004-05-12 | 2006-04-11 | System General Corp. | PWM controller having frequency jitter for power supplies |
| CN101170295A (en) * | 2007-09-25 | 2008-04-30 | 北京航空航天大学 | A flying wheel electromotor control system with magnetic suspending reaction |
| CN101264545A (en) * | 2008-04-30 | 2008-09-17 | 北京工业大学 | Controlling circuit of zero voltage zero current soft-switching arc welding inverter |
| CN201869102U (en) * | 2010-12-06 | 2011-06-15 | 山东大学 | DC/DC changer of photovoltaic high-frequency isolating boosting soft switch |
| CN102364855A (en) * | 2011-06-30 | 2012-02-29 | 成都芯源系统有限公司 | Switch converter and control circuit and control method thereof |
| CN103414354A (en) * | 2013-07-16 | 2013-11-27 | 燕山大学 | Power switch device pulse transformer isolation driving circuit |
| CN104767212A (en) * | 2015-02-13 | 2015-07-08 | 国家电网公司 | Hybrid power electronic transformer |
Non-Patent Citations (1)
| Title |
|---|
| 何帆等: "精密隔离型智能电流互感器的研制与应用", 《电子科学》 * |
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Application publication date: 20180907 |
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| WW01 | Invention patent application withdrawn after publication |