CN105527512B - Embedded virtual test system based on DSP - Google Patents
Embedded virtual test system based on DSP Download PDFInfo
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- CN105527512B CN105527512B CN201510846968.0A CN201510846968A CN105527512B CN 105527512 B CN105527512 B CN 105527512B CN 201510846968 A CN201510846968 A CN 201510846968A CN 105527512 B CN105527512 B CN 105527512B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention relates to the embedded virtual test systems based on DSP, are embedded in the form of program in DSP with lower unit: virtual inverter unit, virtual direct current source unit, virtual AC source unit；Virtual direct current source unit provides d. c. voltage signal to virtual inverter unit and DSP program to be measured and control algolithm, virtual AC source unit provides ac voltage signal to virtual inverter unit and DSP program to be measured and control algolithm, virtual inverter unit provides ac current signal and DC current signal to DSP program to be measured and control algolithm, virtual inverter unit provides DC current signal to virtual direct current source unit, and DSP program and control algolithm to be measured provide modulated signal to virtual inverter unit.Virtual test system of the present invention improves exploitation, testing efficiency and the Security of test of DSP, reduces exploitation and testing cost.
Description
Technical field
The present invention relates to virtual test systems, the embedded virtual test system specifically based on DSP.
Background technique
The development process of DSP (Digital Signal Processor, digital signal processor) at present are as follows:
(1) theoretical algorithm is studied；
(2) it is emulated using Matlab, Matlab is the business mathematics software that MathWorks company of the U.S. produces, and is used
In advanced techniques computational language and interactive environment that algorithm development, data visualization, data analysis and numerical value calculate, mainly
Including Matlab and Simulink two large divisions；
(3) DSP programming；
(4) by the dsp chip on DSP burning program to dsp board, then band forceful electric power test experiments, to DSP program, DSP
Whether each hardware module of each hardware module and inverter on plate, which can operate normally, is verified.
Wherein, (4) step specifically includes: to the practical relay module in hardware module, actual pulse output module, reality
Border communication module etc. is tested, and test function includes: that normal power control, no-voltage pass through control, dynamic and static state MPPT
Test content well known to the industries such as test, error protection test.Only DSP program is correct and above-mentioned each hardware module is normal,
Above-mentioned test function is just able to achieve and meets concerned countries testing standard.
Wherein, after (3) step, it is necessary to dsp board is connect with actual hardware equipment inverter, starts carry out (4) step,
So whether DSP program correct, DSP control system and inverter hardware whether the verifying of normal non-fault, it is necessary in same a period of time
Between carry out, investigation must be debugged repeatedly if any one link is problematic, it is not easy to which rapid orientation problem place is also easy
Occurs hardware damage even personal injury event (the especially exploitation and debugging of high-power high-voltage equipment) in debugging process.
So improving safety, it is necessary to be added in (3) step and (4) step to improve exploitation and testing efficiency
The emulation testing of DSP, in DSP single-board testing or the whole test without forceful electric power, virtual a set of test is flat in the form of emulation
Platform, it is whether correct to verify DSP program.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide the embedded virtual test systems based on DSP
System improves exploitation, testing efficiency and the Security of test of DSP, reduces exploitation and testing cost.
To achieve the above objectives, the technical solution adopted by the present invention is that:
Embedded virtual test system based on DSP, it is characterised in that: using DSP as core, in DSP in the form of program
It is embedded in lower unit:
Virtual inverter unit, for simulating photovoltaic DC-to-AC converter；
Virtual direct current source unit, for simulating photovoltaic DC source；
Virtual AC source unit, for simulating photovoltaic alternating current source；
Virtual direct current source unit provides DC voltage letter to virtual inverter unit and DSP program to be measured and control algolithm
Number,
Virtual AC source unit provides alternating voltage letter to virtual inverter unit and DSP program to be measured and control algolithm
Number,
Virtual inverter unit provides ac current signal and DC current signal to DSP program to be measured and control algolithm,
Virtual inverter unit provides DC current signal to virtual direct current source unit,
DSP program and control algolithm to be measured provide modulated signal to virtual inverter unit.
Based on the above technical solution, the virtual direct current source unit includes constant voltage mode and two kinds of photovoltaic mode fortune
Row mode,
The input of virtual direct current source unit includes: DC voltage instruction valueDC current Idc,
The output of virtual direct current source unit includes: DC voltage Udc。
Based on the above technical solution, under constant voltage mode, by adjusting DC voltage instruction valueIt realizes arbitrary
DC voltage UdcOutput, internal relations are as follows:
Based on the above technical solution, under photovoltaic mode, according to DC current IdcValue realize DC voltage Udc's
Output, internal relations are as follows:
Udc=fIV(Idc),
In formula, abstract function fIVIncluding at least following settable parameter: intensity of illumination, temperature, open-circuit voltage, short circuit electricity
Stream, fill factor.
Based on the above technical solution, the input of virtual AC source unit includes: three-phase alternating voltage instruction value
The output of virtual AC source unit includes: three-phase alternating voltage Uabc。
Based on the above technical solution, the virtual AC source unit, by adjusting three-phase alternating voltage instruction valueFrequency, amplitude, imbalance, harmonic wave realize to three-phase alternating voltage UabcControl, internal relations are as follows:
Based on the above technical solution, the virtual inverter unit, ac filter link use inductance value for the list of L
Filter reactor, switching frequency Ts,
The input of virtual inverter unit is the modulated signal D that DSP program to be measured and control algolithm provideabc, virtual direct current
The DC voltage U that source unit providesdc, virtual AC source unit provide three-phase alternating voltage Uabc,
The output of virtual inverter unit is three-phase alternating current IabcWith DC current Idc, internal relations are as follows:
Idc=Dabc·Iabc
Embedded virtual test system of the present invention based on DSP improves exploitation, testing efficiency and the test peace of DSP
Quan Xing reduces exploitation and testing cost.
Detailed description of the invention
The present invention has following attached drawing:
System construction drawing Fig. 1 of the invention.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
DSP program of the present invention is to be placed on inversion by the dsp board of core of dsp chip in dsp chip internal operation
In device, inverter is attached by direct current and exchange forceful electric power route with DC source, alternating current source.It, will be inverse for safety and efficiently
It is all virtual into program to become device, DC source, alternating current source, is added near former " DSP program ", it can be determined that go out on dsp board
Whether each hardware module is normal, and the every test mentioned before still can carrying out, and test process is consistent with authentic testing,
Test result can reflect true result substantially.
As shown in Figure 1, the embedded virtual test system of the present invention based on DSP, realizes the complete of DSP tested program
Set copying is embedded in the form of program in DSP with lower unit using DSP as core:
Virtual inverter unit, for simulating photovoltaic DC-to-AC converter；
Virtual direct current source unit, for simulating photovoltaic DC source；
Virtual AC source unit, for simulating photovoltaic alternating current source；
Virtual direct current source unit provides DC voltage letter to virtual inverter unit and DSP program to be measured and control algolithm
Number,
Virtual AC source unit provides alternating voltage letter to virtual inverter unit and DSP program to be measured and control algolithm
Number,
Virtual inverter unit provides ac current signal and DC current signal to DSP program to be measured and control algolithm,
Virtual inverter unit provides DC current signal to virtual direct current source unit,
DSP program and control algolithm to be measured provide modulated signal to virtual inverter unit.
Based on the above technical solution, the virtual direct current source unit includes constant voltage mode and two kinds of photovoltaic mode fortune
Row mode,
The input of virtual direct current source unit includes: DC voltage instruction valueDC current Idc,
The output of virtual direct current source unit includes: DC voltage Udc。
Based on the above technical solution, under constant voltage mode, by adjusting DC voltage instruction valueIt realizes arbitrary
DC voltage UdcOutput, internal relations are as follows:
Based on the above technical solution, under photovoltaic mode, according to DC current IdcValue realize DC voltage Udc's
Output, internal relations are as follows:
Udc=fIV(Idc),
In formula, abstract function fIVIncluding at least following settable parameter: intensity of illumination, temperature, open-circuit voltage, short circuit electricity
Stream, fill factor.
Virtual photovoltaic cell is realized by setting intensity of illumination, temperature, open-circuit voltage, short circuit current, fill factor,
Implementation method describes complex and for known in industry, therefore is no longer described in detail.
Based on the above technical solution, the input of virtual AC source unit includes: three-phase alternating voltage instruction value
The output of virtual AC source unit includes: three-phase alternating voltage Uabc。
Based on the above technical solution, the virtual AC source unit, by adjusting three-phase alternating voltage instruction valueFrequency, amplitude, imbalance, harmonic wave realize to three-phase alternating voltage UabcControl, internal relations are as follows:
Based on the above technical solution, the virtual inverter unit, ac filter link use inductance value for the list of L
Filter reactor, switching frequency Ts,
The input of virtual inverter unit is the modulated signal D that DSP program to be measured and control algolithm provideabc, virtual direct current
The DC voltage U that source unit providesdc, virtual AC source unit provide three-phase alternating voltage Uabc,
The output of virtual inverter unit is three-phase alternating current IabcWith DC current Idc, internal relations are as follows:
Idc=Dabc·Iabc
It should be understood that the virtual inverter unit, internal relations expression formula is typical single filter reactor
The Mathematical modeling results of the actual inverter of structure are the examples for describing the invention for convenience.When the mathematics hand of modeling
Section is when changing, or when the actual inverter itself that mathematical modeling is directed to has some small hardware configurations adjustment, such as
Exchange side filtering mode by above-mentioned list L structure (i.e. list filter reactor structure) be changed to LCL structure (i.e. series filtering reactor,
Parallel filtering capacitor again, then series filtering reactor) etc. adjustment when, will lead to above-mentioned internal relations expression formula have it is small
Adjustment, these minor adjustments all should be within the protection scope of this patent.
Based on the above technical solution, the DSP program to be measured and control algolithm, input as DC voltage Udc, three
Phase alternating voltage Uabc, alternating current IabcWith DC current Idc, export modulated signal Dabc, this part is program to be tested
Control algolithm, internal relations are determined by programming person.
To sum up, the present invention under the safety condition without forceful electric power, can utilize structure in DSP before practical band forceful electric power test
Virtual DC source, alternating current source, the inverter built, and in order to meet test request can three at any time controllable parameter, with right
Whether DSP program and whether correct, the most hardware of control algolithm are normally carried out test.Test process and practical band forceful electric power feelings
Condition is completely the same, and test result anticipated that practical band forceful electric power test result substantially.
So the present invention can safely and effectively test DSP program, verifying it, whether correct, hardware module is
No normal, rapid orientation problem place avoids and is carrying out debugging investigation repeatedly with functional to institute on heavy current installation, also avoids
Occur hardware damage even personal injury event in debugging process, improves the efficiency and safety of exploitation and test.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (4)
1. the embedded virtual test system based on DSP, it is characterised in that: embedding in the form of program in DSP using DSP as core
Enter with lower unit:
Virtual inverter unit, for simulating photovoltaic DC-to-AC converter；
Virtual direct current source unit, for simulating photovoltaic DC source；
Virtual AC source unit, for simulating photovoltaic alternating current source；
Virtual direct current source unit provides d. c. voltage signal to virtual inverter unit and DSP program to be measured and control algolithm,
Virtual AC source unit provides ac voltage signal to virtual inverter unit and DSP program to be measured and control algolithm,
Virtual inverter unit provides ac current signal and DC current signal to DSP program to be measured and control algolithm,
Virtual inverter unit provides DC current signal to virtual direct current source unit,
DSP program and control algolithm to be measured provide modulated signal to virtual inverter unit；
The input of virtual AC source unit includes: three-phase alternating voltage instruction value
The output of virtual AC source unit includes: three-phase alternating voltage Uabc；
The virtual AC source unit, by adjusting three-phase alternating voltage instruction valueFrequency, amplitude, imbalance, harmonic wave come
It realizes to three-phase alternating voltage UabcControl, internal relations are as follows:
The virtual inverter unit, ac filter link use inductance value for single filter reactor of L, switching frequency Ts,
The input of virtual inverter unit is the modulated signal D that DSP program to be measured and control algolithm provideabc, virtual DC source list
The DC voltage U that member providesdc, virtual AC source unit provide three-phase alternating voltage Uabc,
The output of virtual inverter unit is three-phase alternating current IabcWith DC current Idc, internal relations are as follows:
Idc=Dabc·Iabc。
2. the embedded virtual test system based on DSP as described in claim 1, it is characterised in that: the virtual DC source list
Member includes two kinds of operational modes of constant voltage mode and photovoltaic mode,
The input of virtual direct current source unit includes: DC voltage instruction valueDC current Idc,
The output of virtual direct current source unit includes: DC voltage Udc。
3. the embedded virtual test system based on DSP as claimed in claim 2, it is characterised in that: under constant voltage mode, pass through tune
Save DC voltage instruction valueRealize arbitrary DC voltage UdcOutput, internal relations are as follows:
4. the embedded virtual test system based on DSP as claimed in claim 2, it is characterised in that: under photovoltaic mode, according to straight
Galvanic electricity stream IdcValue realize DC voltage UdcOutput, internal relations are as follows:
Udc=fIV(Idc),
In formula, abstract function fIVIncluding at least following settable parameter: intensity of illumination, temperature, open-circuit voltage, short circuit current,
Fill factor.
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| CN201510846968.0A CN105527512B (en) | 2015-11-27 | 2015-11-27 | Embedded virtual test system based on DSP |
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| CN105527512B true CN105527512B (en) | 2018-12-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305915A (en) * | 2011-07-29 | 2012-01-04 | 株洲南车时代电气股份有限公司 | Light load simulation testing apparatus for inverter and method thereof |
| CN103777089A (en) * | 2012-10-25 | 2014-05-07 | 中国北车股份有限公司 | Auxiliary inverter model selection platform |
| CN204758716U (en) * | 2015-05-29 | 2015-11-11 | 中国电力科学研究院 | Dc -to -ac converter is at ring testing arrangement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7683630B2 (en) * | 2006-11-30 | 2010-03-23 | Electro Scientific Industries, Inc. | Self test, monitoring, and diagnostics in grouped circuitry modules |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305915A (en) * | 2011-07-29 | 2012-01-04 | 株洲南车时代电气股份有限公司 | Light load simulation testing apparatus for inverter and method thereof |
| CN103777089A (en) * | 2012-10-25 | 2014-05-07 | 中国北车股份有限公司 | Auxiliary inverter model selection platform |
| CN204758716U (en) * | 2015-05-29 | 2015-11-11 | 中国电力科学研究院 | Dc -to -ac converter is at ring testing arrangement |
Non-Patent Citations (2)
| Title |
|---|
| "Real-time Simulation of Photovoltaic Generation System Based on dSPACE";Xiaobo YANG;《International Power, Electronics and Materials Engineering Conference》;20150331;第743页第2段，图1-3 * |
| "光伏并网逆变器检测技术初探";崔荣靖等;《电力系统及其自动化学报》;20130831;第25卷(第4期);全文 * |
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