CN205427679U - Open circuit voltage control circuit of sun battle array simulator - Google Patents
Open circuit voltage control circuit of sun battle array simulator Download PDFInfo
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- CN205427679U CN205427679U CN201620168096.7U CN201620168096U CN205427679U CN 205427679 U CN205427679 U CN 205427679U CN 201620168096 U CN201620168096 U CN 201620168096U CN 205427679 U CN205427679 U CN 205427679U
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Abstract
The utility model discloses an open circuit voltage control circuit of sun battle array simulator, include: the voltage source, its output connected load supplies power for the load, bias resistor rdummy_load, with the load is parallelly connected, adc connects the output of voltage source, the digital process unit is connected adc, and the constant current load, ground connection, connection bias resistor rdummy_load's output and digital analog converter, the utility model discloses circuit structure is very simple, and control mode is simple to realize real opening a way, improved open circuit voltage's precision.
Description
Technical field
This utility model relates to Control of Voltage field, particularly relates to the sun battle array Simulator Open voltage control circuit of current mode output.
Background technology
The solar array simulator that linear arrangement is realized, export to meet the open-circuit voltage of setting, existing control method has adds extra voltage inter-loop at outfan, allow the output end voltage of simulator and current information both participate in control, thus realize the purpose of the adjustable stable output of open-circuit voltage；Another method is then under different setting open circuit voltage conditions, by changing the bus level value of current source supply constantly, realizes expecting the purpose of open-circuit voltage output.
Use the control mode adding voltage inter-loop to need the digital control unit multiple analog signalses of sampling to participate in digital closed loop, thus reduce the dynamic property of simulator complete machine, and control mode is more complicated.The mode changing bus level is used to realize the continuously adjustable method of open-circuit voltage, current source can not be made to accomplish the open-circuit condition in complete meaning, i.e. simulator is equivalent to when band carries the lightest approximate open-circuit condition, and use this kind of control mode to need the power supply providing power generatrix level to export the output of the most continuously adjustable high-accuracy voltage, the precision of output open circuit voltage depends on the output voltage precision of adjustable bus power supply, thus causes the precision characteristic of output open circuit voltage not ideal enough.
Utility model content
The purpose of this utility model is to provide the open-circuit voltage control circuit of sun battle array simulator, and circuit structure is simple, and control mode is simple, it is achieved real open circuit, improves the precision of open-circuit voltage.
The technical solution of the utility model is the open-circuit voltage control circuit of sun battle array simulator, including:
Voltage source, its outfan connects load, powering load；
Biasing resistor Rdummy_load, between described voltage source and load, in parallel with described load；
Analog-digital converter, connects the outfan of voltage source, gathers the output voltage of described outfan, output voltage numeral signal after analog digital conversion；
Digital processing element, connects described analog-digital converter, after being processed by described voltage digital signal, exports target operation current digital reference value；
Digital to analog converter, connects digital processing element, target operation current digital reference value is converted into target operation current analog reference value；And
Constant Current Load, ground connection, connect biasing resistor Rdummy_loadOutfan and digital to analog converter, under the control of target operation current analog reference value, constant flow through biasing resistor Rdummy_loadElectric current and external output electric current summation；
Wherein, described digital processing element includes:
First arithmetic device, connects memorizer and described analog-digital converter, the I-V data form in the voltage digital signal correspondence memorizer that will receive respectively, finds the operating current reference value of load；
Memorizer, storage has I-V data form；
Second arithmetic device, connects described analog-digital converter, receives described voltage digital signal, exports the bias current reference value of biasing resistor after calculating；And
Adder, connects first arithmetic device and second arithmetic device, and by operating current reference value and the bias current reference value summation of described biasing resistor of described load, output target output services current reference value is to described digital to analog converter.
After sun battle array simulator output end voltage is sampled, by analog-digital converter, output end voltage sampled signal is converted into voltage digital signal, this voltage digital signal has needed two partial contents, the first carries out I-V working standard table lookup, provides the operating current reference value of required load under the conditions of present operating point；Its two partial function is the calculating by second arithmetic device, obtains the bias current reference value of the biasing resistor of interpolation in parallel；And the operating current reference value of load and the bias current reference value of biasing resistor are carried out numeral summation, obtains the target output services current reference value of Constant Current Load work；Change eventually through digital-to-analogue conversion electrical equipment, provide the target operation current analog reference value of Constant Current Load.In the open circuit condition, load does not has electric current process, load two ends not to have voltage, only electric current from biasing resistor R yetdummy_loadIn flow through, therefore, output end voltage sampled signal is exactly biasing resistor Rdummy_loadVoltage signal, due to open circuit time, the total current of AfD converter output flows through biasing resistor R exactlydummy_loadElectric current, be also the electric current flowing through Constant Current Load, control the electric current flowing through Constant Current Load, the most just control biasing resistor Rdummy_loadElectric current, biasing resistor Rdummy_loadResistance be to secure, therefore finally just control biasing resistor Rdummy_loadThe voltage at two ends, the i.e. open-circuit voltage of sun battle array simulator voltage output terminal.
This utility model is only at the voltage output terminal of a sun battle array simulator biasing resistor in parallel, then by the conversion of analogue signal with digital signal, in conjunction with Constant Current Load, it is achieved that control the open-circuit voltage of sun battle array simulator.Circuit structure is very simple, and control mode is simple, and realizes real open circuit, improves the precision of open-circuit voltage.
Further, described Constant Current Load includes:
First digital amplifier A1, positive pole connects described digital to analog converter, and negative pole connects the source electrode of metal-oxide-semiconductor, and outfan connects the grid of metal-oxide-semiconductor；
Metal-oxide-semiconductor, drain electrode connects biasing resistor Rdummy_loadOutfan；And
Constant current resistance RS, input connects the source electrode of metal-oxide-semiconductor, output head grounding.
Digital to analog converter controls the first digital amplifier A1 by target operation current analog reference value, finally controls the electric current entering metal-oxide-semiconductor drain electrode.
Further, analog-digital converter connects the outfan of voltage source by difference sample circuit；Described difference sample circuit includes:
Second digital amplifier A2, outfan connects described analog-digital converter, and positive pole connects the second resistance R2, negative pole connects the 3rd resistance R3；
First resistance R1, one end ground connection, the other end connects the positive pole of the second digital amplifier A2；
Second resistance R2, connect the outfan of voltage source；
3rd resistance R3, connect the outfan of voltage source；And
4th resistance R4, connect negative pole and the outfan of the second digital amplifier A2.
Beneficial effect: this utility model passes through to add at the sun battle array simulator outfan biasing resistor R of fictitious load on the basis of linear current source schemedummy_load, and revise the target operation current analog reference value of Constant Current Load by digital processing unit simultaneously, so can meet current mode sun battle array simulator and can realize open circuit operating mode truly, and meet higher output open circuit voltage accuracy.The method implementation method is simple, directly uses digital form to realize, and does not affect original digital I-V current closed-loop, it is ensured that the dynamic characteristic that the output of sun battle array simulator is higher；Eliminate digital processing unit and carry out the closed loop design of load voltage internal ring, and the better simply precision realizing output open circuit voltage.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model；
Fig. 2 is circuit structure diagram of the present utility model.
Labelling in figure: 1-voltage source；2-loads；3-analog-digital converter；4-digital processing element；5-memorizer；6-first arithmetic device；7-second arithmetic device；8-adder；9-digital to analog converter；10-Constant Current Load.
Detailed description of the invention
Below in conjunction with the accompanying drawings, preferably embodiment of the present utility model is described in further detail:
In conjunction with Fig. 1 and Fig. 2, the open-circuit voltage control circuit of sun battle array simulator, including:
Voltage source 1, its outfan connects load 2, gives load 2 power supply；
Biasing resistor Rdummy_load, between described voltage source 1 and load 2, in parallel with described load 2；
Analog-digital converter 3, connects the outfan of voltage source 1, gathers the output voltage of described outfan, output voltage numeral signal after analog digital conversion；
Digital processing element 4, connects described analog-digital converter 3, after being processed by described voltage digital signal, exports target operation current digital reference value；
Digital to analog converter 9, connects digital processing element 4, target operation current digital reference value is converted into target operation current analog reference value；And
Constant Current Load 10, ground connection, connect biasing resistor Rdummy_loadOutfan and digital to analog converter 9, under the control of target operation current analog reference value, constant flow through biasing resistor Rdummy_loadElectric current and external output electric current summation；
Wherein, described digital processing element 4 includes:
First arithmetic device 6, connects memorizer 5 and described analog-digital converter 3, the I-V data form in the voltage digital signal correspondence memorizer 5 that will receive respectively, finds the operating current reference value of load 2；
Memorizer 5, storage has I-V data form；
Second arithmetic device 7, connects described analog-digital converter 3, receives described voltage digital signal, exports the bias current reference value of biasing resistor after calculating；And
Adder 8, connects first arithmetic device 6 and second arithmetic device 7, and by operating current reference value and the bias current reference value summation of described biasing resistor of described load 2, output target output services current reference value is to described digital to analog converter 9.
After sun battle array simulator output end voltage is sampled, by analog-digital converter 3, output end voltage sampled signal is converted into voltage digital signal, this voltage digital signal has needed two partial contents, the first carries out I-V working standard table lookup, provides the operating current reference value of required load 2 under the conditions of present operating point；Its two partial function is the calculating by second arithmetic device 7, obtains the bias current reference value of the biasing resistor of interpolation in parallel；And the operating current reference value of load 2 and the bias current reference value of biasing resistor are carried out numeral summation, obtains the target output services current reference value of Constant Current Load 10 work；Change eventually through digital-to-analogue conversion electrical equipment, provide the target operation current analog reference value of Constant Current Load 10.In the open circuit condition, load 2 does not has electric current process, and loading 2 two ends does not has voltage, only electric current from biasing resistor R yetdummy_loadIn flow through, therefore, output end voltage sampled signal is exactly biasing resistor Rdummy_loadVoltage signal, due to open circuit time, the total current of analog-digital converter 3 outfan flows through biasing resistor R exactlydummy_loadElectric current, be also the electric current flowing through Constant Current Load 10, control the electric current flowing through Constant Current Load 10, the most just control biasing resistor Rdummy_loadElectric current, biasing resistor Rdummy_loadResistance be to secure, therefore finally just control biasing resistor Rdummy_loadThe voltage at two ends, the i.e. open-circuit voltage of sun battle array simulator voltage source 1 outfan.
This utility model is only at voltage source 1 outfan of a sun battle array simulator biasing resistor in parallel, then by the conversion of analogue signal with digital signal, in conjunction with Constant Current Load 10, it is achieved that control the open-circuit voltage of sun battle array simulator.Circuit structure is very simple, and control mode is simple, and realizes real open circuit, improves the precision of open-circuit voltage.
In conjunction with Fig. 2, described Constant Current Load 10 includes:
First digital amplifier A1, positive pole connects described digital to analog converter 9, and negative pole connects the source electrode of metal-oxide-semiconductor, and outfan connects the grid of metal-oxide-semiconductor；
Metal-oxide-semiconductor, drain electrode connects biasing resistor Rdummy_loadOutfan；And
Constant current resistance RS, input connects the source electrode of metal-oxide-semiconductor, output head grounding.
Digital to analog converter 9 controls the first digital amplifier A1 by target operation current analog reference value, finally controls the electric current entering metal-oxide-semiconductor drain electrode.
In conjunction with Fig. 2, analog-digital converter 3 connects the outfan of voltage source 1 by difference sample circuit；Described difference sample circuit includes:
Second digital amplifier A2, outfan connects described analog-digital converter 3, and positive pole connects the second resistance R2, negative pole connects the 3rd resistance R3；
First resistance R1, one end ground connection, the other end connects the positive pole of the second digital amplifier A2；
Second resistance R2, connect the outfan of voltage source 1；
3rd resistance R3, connect the outfan of voltage source 1；And
4th resistance R4, connect negative pole and the outfan of the second digital amplifier A2.
This utility model passes through to add at the sun battle array simulator outfan biasing resistor R of fictitious load on the basis of linear current source schemedummy_load, and revise the target operation current analog reference value of Constant Current Load 10 by digital processing unit simultaneously, so can meet current mode sun battle array simulator and can realize open circuit operating mode truly, and meet higher output open circuit voltage accuracy.The method implementation method is simple, directly uses digital form to realize, and does not affect original digital I-V current closed-loop, it is ensured that the dynamic characteristic that the output of sun battle array simulator is higher；Eliminate digital processing unit and carry out loading the closed loop design of 2 voltage inter-loops, and the better simply precision realizing output open circuit voltage.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. the open-circuit voltage control circuit of sun battle array simulator, it is characterised in that including:
Voltage source, its outfan connects load, powering load；
Biasing resistor Rdummy_load, between described voltage source and load, in parallel with described load；
Analog-digital converter, connects the outfan of voltage source, gathers the output voltage of described outfan, output voltage numeral signal after analog digital conversion；
Digital processing element, connects described analog-digital converter, after being processed by described voltage digital signal, exports target operation current digital reference value；
Digital to analog converter, connects digital processing element, target operation current digital reference value is converted into target operation current analog reference value；And
Constant Current Load, ground connection, connect biasing resistor Rdummy_loadOutfan and digital to analog converter, under the control of target operation current analog reference value, constant flow through biasing resistor Rdummy_loadElectric current and external output electric current summation；
Wherein, described digital processing element includes:
First arithmetic device, connects memorizer and described analog-digital converter, the I-V data form in the voltage digital signal correspondence memorizer that will receive respectively, finds the operating current reference value of load；
Memorizer, storage has I-V data form；
Second arithmetic device, connects described analog-digital converter, receives described voltage digital signal, exports the bias current reference value of biasing resistor after calculating；And
Adder, connects first arithmetic device and second arithmetic device, and by operating current reference value and the bias current reference value summation of described biasing resistor of described load, output target output services current reference value is to described digital to analog converter.
The open-circuit voltage control circuit of sun battle array simulator the most according to claim 1, it is characterised in that described Constant Current Load includes:
First digital amplifier A1, positive pole connects described digital to analog converter, and negative pole connects the source electrode of metal-oxide-semiconductor, and outfan connects the grid of metal-oxide-semiconductor；
Metal-oxide-semiconductor, drain electrode connects biasing resistor Rdummy_loadOutfan；And
Constant current resistance RS, input connects the source electrode of metal-oxide-semiconductor, output head grounding.
The open-circuit voltage control circuit of sun battle array simulator the most according to claim 2, it is characterised in that analog-digital converter connects the outfan of voltage source by difference sample circuit；Described difference sample circuit includes:
Second digital amplifier A2, outfan connects described analog-digital converter, and positive pole connects the second resistance R2, negative pole connects the 3rd resistance R3；
First resistance R1, one end ground connection, the other end connects the positive pole of the second digital amplifier A2；
Second resistance R2, connects the outfan of voltage source；
3rd resistance R3, connects the outfan of voltage source；And
4th resistance R4, connects negative pole and the outfan of the second digital amplifier A2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168096.7U CN205427679U (en) | 2016-03-04 | 2016-03-04 | Open circuit voltage control circuit of sun battle array simulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168096.7U CN205427679U (en) | 2016-03-04 | 2016-03-04 | Open circuit voltage control circuit of sun battle array simulator |
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| CN205427679U true CN205427679U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620168096.7U Withdrawn - After Issue CN205427679U (en) | 2016-03-04 | 2016-03-04 | Open circuit voltage control circuit of sun battle array simulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573391A (en) * | 2016-03-04 | 2016-05-11 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit of solar array simulator and open-circuit voltage control method thereof |
| CN111323623A (en) * | 2020-03-19 | 2020-06-23 | 中国计量科学研究院 | Josephson array simulation system and method |
-
2016
- 2016-03-04 CN CN201620168096.7U patent/CN205427679U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573391A (en) * | 2016-03-04 | 2016-05-11 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit of solar array simulator and open-circuit voltage control method thereof |
| CN105573391B (en) * | 2016-03-04 | 2017-06-30 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit and its open-circuit voltage control method of sun battle array simulator |
| CN111323623A (en) * | 2020-03-19 | 2020-06-23 | 中国计量科学研究院 | Josephson array simulation system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20170630 |
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| AV01 | Patent right actively abandoned |