CN109298218A - A kind of DC voltage source high-precision ripple modulating system - Google Patents
A kind of DC voltage source high-precision ripple modulating system Download PDFInfo
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- CN109298218A CN109298218A CN201811218730.3A CN201811218730A CN109298218A CN 109298218 A CN109298218 A CN 109298218A CN 201811218730 A CN201811218730 A CN 201811218730A CN 109298218 A CN109298218 A CN 109298218A
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- ripple
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The present invention relates to a kind of DC voltage source high-precision ripple modulating systems, including DC voltage source, ripple signal source, DC voltage measurement module, DC voltage source power amplifier module, ripple modulation module and ripple measurement module, DC voltage source power amplifier module series connection ripple modulation module, DC voltage source power amplifier module is connected with the direct current signal input of DC voltage source generation, and ripple modulation module is connected with the ripple signal input of ripple signal source generation；DC voltage source power amplifier module is parallel with DC voltage source power amplifier module, and ripple modulation module is parallel with ripple measurement module.DC voltage source of the present invention is independently arranged with ripple signal source, setting is isolated with ripple signal source circuit in DC voltage source power amplifier independently of each other, respectively use independent sampling TT&C system, the precision of independent control itself, output is finally realized using tandem, to realize that DC voltage source is superimposed high-precision ripple.
Description
Technical field
The invention belongs to electrical energy measurement field, especially a kind of DC voltage source high-precision ripple modulating system.
Background technique
As non-renewable energy resources (such as petroleum, natural gas) are increasingly depleted, new-energy automobile especially electric car is not
Come the trend developed.Charging pile is using the essential equipment of electric car, the at this time metering of the direct current energy meter of charging pile
Calibration problem also shows especially out, and in charging pile practical application, DC voltage and current can all have very big ripple, therefore modulate
The voltage source of ripple, current source ability closing to reality direct current energy meter operating status, this ripple influence amount experiment is to charging pile
Direct current energy meter has very important significance.It is domestic at present that there has been no with the d. c. voltage signal source that can modulate ripple in high precision.
0~1050V of direct current energy meter voltage range DC at present, range is very wide, if in the input of DC voltage source power amplifier
Signal is directly superimposed ripple, needs power amplifier feedback loop filter to be not only able to satisfy DC voltage source band and carries energy, but also can guarantee ripple
It is unattenuated, it is difficult, if adjustment ripple is removed after testing using measuring system again, since output voltage is very big, ripple very little,
Measurement accuracy is difficult to be made high, therefore is difficult for ripple precision to be made high.
Summary of the invention
It is an object of the invention to provide a kind of DC voltage source high-precision ripple tune in place of overcome the deficiencies in the prior art
System processed, solving detection influences the precision of direct current energy meter with ripple d. c. voltage signal.
The present invention solves its technical problem and adopts the following technical solutions to achieve:
A kind of DC voltage source high-precision ripple modulating system, it is characterised in that: including DC voltage source, ripple signal
Source, DC voltage measurement module, DC voltage source power amplifier module, ripple modulation module and ripple measurement module, DC voltage
Source power amplifier module series connection ripple modulation module, the direct current signal that DC voltage source power amplifier module is connected with DC voltage source generation are defeated
Enter, ripple modulation module is connected with the ripple signal input of ripple signal source generation；DC voltage source power amplifier module is parallel with directly
Galvanic electricity potential source power amplifier module, ripple modulation module are parallel with ripple measurement module.
Moreover, system working method:
Firstly, DC voltage source and ripple signal source export direct current signal and ripple signal respectively, direct current signal is directly only
Vertical to input to corresponding DC voltage power amplifier module, the direct independent input of ripple signal gives waviness modulation module；
Meanwhile DC voltage power amplifier module and waviness modulation module respectively use independent sampling TT&C system, it is independent to control
Make the precision of itself, specifically: DC voltage power amplifier module by DC voltage measurement module samples observing and controlling, ripple modulation module by
Ripple measurement module samples observing and controlling；
Finally, DC voltage power amplifier module and ripple modulation module realize output using tandem, DC voltage is realized
Source is superimposed high-precision ripple.
The advantages and positive effects of the present invention are:
1, the present invention realizes direct current energy meter in the accuracy detection for having ripple DC voltage, and demonstrating charging pile is having ripple
The accuracy of the direct current energy meter charging of situation.
2, direct current energy meter of the invention had not only been able to satisfy DC voltage source band and has carried energy, but also can guarantee that ripple is unattenuated, measured
Precision is high.
3, DC voltage source and ripple signal of the present invention source is independently arranged, DC voltage source power amplifier and ripple signal source electricity
Setting is isolated in road independently of each other, respectively uses independent sampling TT&C system, the precision of independent control itself, finally using concatenation
Mode realizes output, to realize that DC voltage source is superimposed high-precision ripple.
Detailed description of the invention
Fig. 1 is the DC voltage source ripple modulating system architecture diagram of the present embodiment.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
A kind of DC voltage source high-precision ripple modulating system, including DC voltage source, ripple signal source, DC voltage survey
Measure module, DC voltage source power amplifier module, ripple modulation module and ripple measurement module, the series connection of DC voltage source power amplifier module
Ripple modulation module, DC voltage source power amplifier module are connected with the direct current signal input of DC voltage source generation, and ripple modulates mould
Block is connected with the ripple signal input of ripple signal source generation；DC voltage source power amplifier module is parallel with DC voltage source power amplifier mould
Block is convenient for independent observing and controlling, and ripple modulation module is parallel with ripple measurement module convenient for independent observing and controlling.
DC voltage source high-precision ripple modulating system is to use DC voltage source and ripple module independent design, final defeated
DC voltage source is concatenated into output with ripple module out.
As shown in Figure 1, mainly by DC voltage source power amplifier module 2, DC voltage measurement module 1, ripple modulation module 3,
Ripple measurement module 4 is constituted, and DC voltage source module is designed using TI company UC3844, IR company IRF3N120, DC voltage
Source module exports direct current signal, and DC voltage measurement module 1 is public using ST Microelectronics STM32F103VCT, icepro Li Erte
LTC2378 design is taken charge of, ripple modulation module 3 uses ADI company OP2177, VISHAY company IPF9640, VISHAY company
IPF640, Shenzhen Yi Jie company UPR resistive arrangement, the use of ripple measurement module 4 ST Microelectronics STM32F103VCT,
ADI company AD7685 design.The input terminal of the output end connection DC voltage measurement module 1 of DC voltage source power amplifier module 2, directly
Flow the precision that voltage measurement module 1 guarantees DC voltage source power amplifier module 2 by sampling feedback, the output of ripple modulation module 3
The input terminal of spread groove wave measurement module 4 is held, ripple measurement module 4 guarantees what ripple modulation module 3 exported by sampling feedback
Precision finally concatenates 2 cathode of DC voltage source power amplifier module with the output end of ripple modulation module 3, DC voltage source anode
For output cathode, 3 other end of ripple modulation module is used as negative terminal.
Above-mentioned modulating system working principle is as follows: DC voltage source and ripple signal source export direct current signal and ripple respectively
Signal, then the direct independent input of direct current signal gives corresponding DC voltage power amplifier module 2, and the direct independent input of ripple signal is given
Waviness modulation module 3, and DC voltage power amplifier module 2 and waviness modulation module 3 respectively use independent sampling TT&C system, solely
The precision of vertical control itself, i.e. DC voltage power amplifier module 2 sample observing and controlling, ripple modulation module 3 by DC voltage measurement module 1
Observing and controlling, last DC voltage power amplifier module 2 and ripple modulation module 3 is sampled by ripple measurement module 4 to realize using tandem
Output, to realize that DC voltage source is superimposed high-precision ripple.
Although disclosing the embodiment of the present invention and attached drawing for the purpose of illustration, those skilled in the art can be managed
Solution: do not departing from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible,
Therefore, the scope of the present invention is not limited to the embodiment and attached drawing disclosure of that.
Claims (2)
1. a kind of DC voltage source high-precision ripple modulating system, it is characterised in that: including DC voltage source, ripple signal source,
DC voltage measurement module, DC voltage source power amplifier module, ripple modulation module and ripple measurement module, DC voltage source function
Amplification module series connection ripple modulation module, DC voltage source power amplifier module are connected with the direct current signal input of DC voltage source generation,
Ripple modulation module is connected with the ripple signal input of ripple signal source generation；DC voltage source power amplifier module is parallel with direct current
Potential source power amplifier module, ripple modulation module are parallel with ripple measurement module.
2. DC voltage source high-precision ripple modulating system according to claim 1, it is characterised in that: system work side
Method:
Firstly, DC voltage source and ripple signal source export direct current signal and ripple signal respectively, direct current signal is directly independent defeated
Enter to corresponding DC voltage power amplifier module, the direct independent input of ripple signal gives waviness modulation module；
Meanwhile DC voltage power amplifier module and waviness modulation module respectively use independent sampling TT&C system, independent control is certainly
The precision of body, specifically: DC voltage power amplifier module is by DC voltage measurement module samples observing and controlling, and ripple modulation module is by ripple
Measurement module samples observing and controlling；
Finally, DC voltage power amplifier module and ripple modulation module realize output using tandem, realize that DC voltage source is folded
Increase precision ripple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218730.3A CN109298218A (en) | 2018-10-19 | 2018-10-19 | A kind of DC voltage source high-precision ripple modulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218730.3A CN109298218A (en) | 2018-10-19 | 2018-10-19 | A kind of DC voltage source high-precision ripple modulating system |
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| CN109298218A true CN109298218A (en) | 2019-02-01 |
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| CN201811218730.3A Pending CN109298218A (en) | 2018-10-19 | 2018-10-19 | A kind of DC voltage source high-precision ripple modulating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413561A (en) * | 2020-03-24 | 2020-07-14 | 哈尔滨工业大学 | Power supply ripple simulation system with state monitoring function |
| CN111426862A (en) * | 2020-04-16 | 2020-07-17 | 云南电网有限责任公司电力科学研究院 | Ripple test power supply system |
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Application publication date: 20190201 |