CN103323719B - Test method of photovoltaic inverter single-path MPPT - Google Patents
Test method of photovoltaic inverter single-path MPPT Download PDFInfo
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- CN103323719B CN103323719B CN201310277128.8A CN201310277128A CN103323719B CN 103323719 B CN103323719 B CN 103323719B CN 201310277128 A CN201310277128 A CN 201310277128A CN 103323719 B CN103323719 B CN 103323719B
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Abstract
The invention discloses a test method of photovoltaic inverter single-path MPPT. The method comprises a step of a static test. In the step of the static test, a solar simulator is used to set the input voltage of a photovoltaic inverter and the input power of the photovoltaic inverter, the MPPT efficiency of the photovoltaic inverter in the combination of various input voltages and input powers is tested, in the combination, the input voltages of the photovoltaic inverter comprise an MPPT minimum working voltage Vmin, a rated working voltage Vnom and a maximum working voltage Vmax of the photovoltaic inverter, the powers of the photovoltaic inverter comprises a full load input power Pin and 5% of the full load input power Pin of the photovoltaic inverter. The test method of the invention has the advantages of high efficiency and reliability.
Description
Technical field
The present invention relates to photovoltaic field, refer more particularly to the method for testing of a kind of photovoltaic inverter single-path MPPT.
Background technology
At present along with the widespread use of sun power, most photovoltaic DC-to-AC converter has all possessed MPPT(Maximum Power Point, maximum power point) function.The maximum trace point of so-called photovoltaic generation follows the tracks of (MPPT), refers in photovoltaic generating system, the utilization factor of photovoltaic cell except with the bulk properties of photovoltaic cell by outside the Pass, also receive environment for use as the impact of the factors such as irradiance, load and temperature.Under different external condition, photovoltaic DC-to-AC converter operates in difference and on unique maximum power point (MPPT).Therefore, for photovoltaic generating system, the optimum Working of cell panel should be sought, carry out opto-electronic conversion to greatest extent.
Energy due to sun power directly affected by the intensity of illumination of the sun, so MPPT changes by the illumination power change of the sun.How could effectively and reliably test a great problem that photovoltaic DC-to-AC converter becomes tester.Most of method of testing generally all adopts randomness.Randomness is exactly input voltage vin or the MPPT operating voltage Voc of random adjustment solar inverter, and the power input Pin of random adjustment solar inverter or maximum tracking power points Pmp has gone the test of MPPT efficiency.All there is the leak that MPPT voltage and power do not have Complete test in the test on this, and tests also more complicated.The test of these methods gets up confusion again blindly, and testing efficiency is not high yet, the factor of merit of product is also reduced, manpower wastes the time greatly.
Summary of the invention
For solving the problems referred to above of prior art, be necessary the method for testing of the photovoltaic inverter single-path MPPT that a kind of high efficient and reliable is provided.
The technical scheme that technical solution problem of the present invention provides is:
The method of testing of a kind of photovoltaic inverter single-path MPPT, it comprises the step of static test, in the step of static test, with solar simulator, the input voltage of photovoltaic DC-to-AC converter and the power input of photovoltaic DC-to-AC converter are set, the MPPT efficiency of test photovoltaic DC-to-AC converter under input voltage and the various combination of power input, in described combination, the input voltage of photovoltaic DC-to-AC converter comprises the minimum operating voltage Vmin of MPPT of photovoltaic DC-to-AC converter, rated operational voltage Vnom, maximum operating voltage Vmax, the power of photovoltaic DC-to-AC converter comprises the fully loaded power input Pin of the fully loaded power input Pin and 5% of photovoltaic DC-to-AC converter.
Wherein, in the step of described static test, the full-load power of the power input arranging photovoltaic DC-to-AC converter further with solar simulator from 5%, the full-load power of 25%, full-load power, the full-load power of 75%, the full-load power of 100% of 50% change successively, test the MPPT efficiency when input voltage is rated operational voltage Vnom.
Wherein, in the step of described static test, the full-load power of the power input arranging photovoltaic DC-to-AC converter further with solar simulator from 100%, the full-load power of 75%, full-load power, the full-load power of 25%, the full-load power of 5% of 50% change successively, test the MPPT efficiency when input voltage is rated operational voltage Vnom.
Wherein, be the full-load power of 5% by the power input that solar simulator arranges photovoltaic DC-to-AC converter further, MPPT efficiency when test setting input voltage is minimum operating voltage Vmin.
Wherein, the input voltage of test and power transfer order are: Vmin voltage and 5% Pin power; Vnom voltage and 5% Pin power; Vmax voltage and 5% Pin power; Vmax voltage and 100% Pin power; Vnom voltage and 100% Pin power; Vmin voltage and 100% Pin power.
Wherein, the input voltage of test and power transfer order are: Vmin voltage and 5% Pin power; Vmin voltage and 100% Pin power; Vnom voltage and 100% Pin power; Vmax voltage and 100% Pin power; Vmax voltage and 5% Pin power; Vnom voltage and 5% Pin power.
Wherein, the method for testing of described photovoltaic inverter single-path MPPT comprises the step of dynamic test further, and the step of described dynamic test comprises:
The voltage Voc of the maximum tracking power points of solar inverter is set respectively with solar simulator, the power P mp of maximum tracking power points;
Arrange solar inverter to power on from start, rise to maximum tracking power points Pmp required time, and arrive the maximum tracking power points Pmp stable time, and the time required when dropping to shutdown;
Adopt above-mentioned setting, automatically record the MPPT efficiency of each point when inverter normally works;
According to test result analysis and judge whether to meet specification requirement.
Compared with prior art, the method of testing of photovoltaic inverter single-path MPPT of the present invention simulates the test of solar panel at the various limit points by sunshine, also simulation test rises to the process of whereabouts at the sun, effectively tests photovoltaic DC-to-AC converter in each limit and MPPT efficiency in typical case.
Accompanying drawing explanation
Fig. 1 is the static test process flow diagram of method of testing of the present invention;
Fig. 2 is the schematic diagram that puts in order of a kind of MPPT test point of the present invention;
Fig. 3 is the schematic diagram that puts in order of another kind of MPPT test point of the present invention;
Fig. 4 is the dynamic test process flow diagram of method of testing of the present invention;
Fig. 5 is a kind of MPPT dynamic operation geometric locus figure of the present invention;
Fig. 6 is another kind of MPPT dynamic operation curve map of the present invention.
Embodiment
Below in conjunction with drawings and Examples, invention is described in detail.
The method of testing of photovoltaic inverter single-path MPPT of the present invention comprises the test of static test and dynamic test two states, thus comprehensively tests solar inverter MPPT efficiency under various regimes.
As shown in Figure 1, the static test flow process of described MPPT comprises the following steps:
Step S01, arranges the input voltage vin of photovoltaic DC-to-AC converter respectively with solar simulator, Vin voltage comprises the minimum operating voltage of MPPT (Vmin) of photovoltaic DC-to-AC converter, rated operational voltage (Vnom) and maximum operating voltage (Vmax) thereof;
Step S02, arrange the fully loaded power input Pin of photovoltaic DC-to-AC converter, namely Pin is equal to or greater than the peak power output of photovoltaic DC-to-AC converter;
Step S03, by the parameter that just now set, selects the power points (minimum power input Pin is generally 5%) of power input Pin of Vmin voltage and 5%; Start start, this parameter testing MPPT efficiency of photovoltaic DC-to-AC converter in the extremely more weak situation of sun power;
Step S04, tests the MPPT of each point; Described photovoltaic DC-to-AC converter is made up of single channel MPPT, in this step, is that the voltage that produced by solar panel and power (electric current that solar panel produces) have combined respectively, thus the energy variation process of analog solar cell panel;
Step S05, records the MPPT efficiency of each test point just now;
Step S06, according to test result analysis and judge whether to meet specification requirement;
Step S07, the lower electricity of shutdown, test terminates.
In concrete enforcement, the energy provided due to solar panel changes at any time.As shown in Figure 2, in step 04, test point can be tested by order change below.First the flow testing of dotted arrow is pressed, when input voltage vin is the stable point IL1 of the Pin power of Vmin and 5%; Change to the some OL2 of Pin power of Vnom voltage and 5%; Change to the some AL3 of the Vmax voltage of Vin and the Pin power of 5%; Change to the some AH3 of the Vmax voltage of Vin and the Pin power of 100%; Change to the some OH2 of the Vnom voltage of Vin and the Pin power of 100%; Change to the some IH1 of the Vmin voltage of Vin and the Pin power of 100%.Because photovoltaic DC-to-AC converter generally can derate when low pressure, 100% power in the some IH1 of now the Vmin voltage of Vin and the Pin power of 100% is the maximum workable power of machine low pressure itself.And test record is in the MPPT efficiency of each point.This to test from low pressure miniwatt to high pressure miniwatt again to high pressure full power again to the conversion of low pressure full power.The MPPT efficiency test of the first round completes.
The first round again starts second by the flow testing of solid arrow and takes turns test after having tested, when when the stable point IL1 of the Vmin voltage of Vin and the Pin power of 5%; Change to the some IH1 of the Vmin voltage of Vin and the Pin power of 100%; Change to the some OH2 of the Vnom voltage of Vin and the Pin power of 100%; Change to the some AH3 of the Vmax voltage of Vin and the Pin power of 100%; Change to the some AL3 of the Vmax voltage of Vin and the Pin power of 5%; Change to the some OL2 of the Vnom voltage of Vin and the Pin power of 5%.Because photovoltaic DC-to-AC converter generally can derate when low pressure, 100% power in the some IH1 of now the Vmin voltage of Vin and the Pin power of 100% is the maximum workable power of machine low pressure itself.And test record is in the MPPT efficiency of each point.This to test by low pressure miniwatt to low pressure full power to high pressure full power to high pressure miniwatt again to the low power conversion of low pressure.
Above-described MPPT to test at solar panel in the state of each limit the impact of photovoltaic DC-to-AC converter.
In concrete enforcement, because the energy (electric current or power) of solar panel is mainly by the impact of sunshine, and the voltage influence that sunshine is supplied to photovoltaic DC-to-AC converter to solar panel is little.The present invention reoffers the testing sequence of another kind of MPPT test point, as shown in Figure 3, first presses the flow testing of solid arrow, when when the stable point IL1 of the Vmin voltage of Vin and the Pin power of 5%; Change to the some OL2 of the Vnom voltage of Vin and the Pin power of 5%; Change to the some OL3 of the Vnom voltage of Vin and the Pin power of 25%; Change to the some OL4 of the Vnom voltage of Vin and the Pin power of 50%; Change to the some OL5 of the Vnom voltage of Vin and the Pin power of 75%; Change to the some OH2 of the Vnom voltage of Vin and the Pin power of 100%, and test record is in the MPPT efficiency of each point.The process that the test simulation of the epicycle sun slowly rises, namely simulates each static change process at morning to noon.
Then carry out next round test, then press the flow testing of dotted arrow, as the some OH2 at the Vnom voltage of Vin and the Pin power of 100%; Change to the some OL5 of the Vnom voltage of Vin and the Pin power of 75%; Change to the some OL4 of the Vnom voltage of Vin and the Pin power of 50%; Change to the some OL3 of the Vnom voltage of Vin and the Pin power of 25%; Change to the some OL2 of the Vnom voltage of Vin and the Pin power of 5%; Change to the some IL1 of the Vmin voltage of Vin and the Pin power of 5%, and test record is in the MPPT efficiency of each point.The process that the test simulation of the epicycle sun slowly declines, namely simulates noon to each static change process at dusk.
As shown in Figure 4, in dynamic test, the testing process of described MPPT comprises the following steps;
Step S08, arranges the voltage Voc of the maximum tracking power points of solar inverter respectively with solar simulator, the power P mp of maximum tracking power points;
Step S09, arranges solar inverter and powers on from start, rises to maximum tracking power points Pmp required time, and arrives the maximum tracking power points Pmp stable time, and the time required when dropping to shutdown; In concrete enforcement, as shown in Figure 5, power on from start, rising to maximum tracking power points Pmp required time is 2min, and the stable time after maximum tracking power points Pmp that arrives is 4min, and when dropping to shutdown, the required time is 2min.This test simulation sun rises to the dynamic changing process of whereabouts;
Step S10, starts start;
Step S11, when inverter normally works, starts the MPPT efficiency automatically recording each point;
Step S12, according to test result analysis and judge whether to meet specification requirement;
Step S13, the lower electricity of shutdown, test terminates.
In concrete enforcement, as shown in Figure 6, be a kind of dynamic operation geometric locus figure of MPPT; Change along with the change of power P from the V voltage that just powers on.After running multiple track through 2min, when voltage V and power P slowly increase to MPPT voltage Voc and maximum tracking power points Pmp, after this point stablizes 4min, then run after multiple track through 2min, voltage V and power P slowly drop to shutdown again.
In sum, the method of testing of photovoltaic inverter single-path MPPT of the present invention simulates the test of solar panel at the various limit points by sunshine, also simulation test rises to the process of whereabouts at the sun, effectively tests photovoltaic DC-to-AC converter in each limit and MPPT efficiency in typical case.
Above-mentioned embodiment illustrates but does not limit the present invention, and those skilled in the art can design within the scope of the claims and multiplely replace example.Those skilled in the art it should be appreciated that not violating within scope of the present invention as defined in the appended claims, can make suitable adjustment, amendment etc. to specific implementation.Therefore, all according to the spirit and principles in the present invention, any modifications and variations done, within the scope of the present invention all defined at appended claims.
Claims (5)
1. a method of testing of photovoltaic inverter single-path MPPT, is characterized in that, comprises the step of static test,
In the step of static test, with solar simulator, the input voltage of photovoltaic DC-to-AC converter and the power input of photovoltaic DC-to-AC converter are set, the MPPT efficiency of test photovoltaic DC-to-AC converter under input voltage and the various combination of power input, in described combination, the input voltage of photovoltaic DC-to-AC converter comprises the minimum operating voltage Vmin of MPPT, rated operational voltage Vnom, the maximum operating voltage Vmax of photovoltaic DC-to-AC converter, and the power of photovoltaic DC-to-AC converter comprises the fully loaded power input Pin of the fully loaded power input Pin and 5% of photovoltaic DC-to-AC converter;
Test input voltage and power transfer order be: Vmin voltage and 5% Pin power; Vnom voltage and 5% Pin power; Vmax voltage and 5% Pin power; Vmax voltage and 100% Pin power; Vnom voltage and 100% Pin power; Vmin voltage and 100% Pin power;
Or
Test input voltage and power transfer order be: Vmin voltage and 5% Pin power; Vmin voltage and 100% Pin power; Vnom voltage and 100% Pin power; Vmax voltage and 100% Pin power; Vmax voltage and 5% Pin power; Vnom voltage and 5% Pin power.
2. the method for testing of photovoltaic inverter single-path MPPT as claimed in claim 1, it is characterized in that, in the step of described static test, the full-load power of the power input arranging photovoltaic DC-to-AC converter further with solar simulator from 5%, the full-load power of 25%, full-load power, the full-load power of 75%, the full-load power of 100% of 50% change successively, test the MPPT efficiency when input voltage is rated operational voltage Vnom.
3. the method for testing of photovoltaic inverter single-path MPPT as claimed in claim 1, it is characterized in that, in the step of described static test, the full-load power of the power input arranging photovoltaic DC-to-AC converter further with solar simulator from 100%, the full-load power of 75%, full-load power, the full-load power of 25%, the full-load power of 5% of 50% change successively, test the MPPT efficiency when input voltage is rated operational voltage Vnom.
4. the method for testing of photovoltaic inverter single-path MPPT as claimed in claim 2 or claim 3, it is characterized in that, be the full-load power of 5% by the power input that solar simulator arranges photovoltaic DC-to-AC converter further, MPPT efficiency when test setting input voltage is minimum operating voltage Vmin.
5. the method for testing of photovoltaic inverter single-path MPPT as claimed in claim 1, is characterized in that,
Comprise the step of dynamic test further, the step of described dynamic test comprises:
The voltage Voc of the maximum tracking power points of solar inverter is set respectively with solar simulator, the power P mp of maximum tracking power points;
Arrange solar inverter to power on from start, rise to maximum tracking power points Pmp required time, and arrive the maximum tracking power points Pmp stable time, and the time required when dropping to shutdown;
Adopt above-mentioned setting, automatically record the MPPT efficiency of each point when inverter normally works;
According to test result analysis and judge whether to meet specification requirement.
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| CN104280629B (en) * | 2014-08-07 | 2017-05-31 | 深圳市汇川技术股份有限公司 | The appraisal procedure and system of photovoltaic DC-to-AC converter MPPT maximum power point tracking efficiency |
| CN105785281A (en) * | 2014-12-18 | 2016-07-20 | 国家电网公司 | Photovoltaic grid-connected inverter MPPT (maximum power point tracking) efficiency test method and device |
| CN104980105B (en) * | 2015-06-01 | 2017-06-13 | 北京汇能精电科技股份有限公司 | A kind of method for testing solar photovoltaic generation system MPPT maximum power point tracking algorithm performance |
| CN109088598A (en) * | 2018-06-29 | 2018-12-25 | 汉能移动能源控股集团有限公司 | Method, device and equipment for testing maximum power point tracking efficiency of mobile energy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2110729A1 (en) * | 2007-02-09 | 2009-10-21 | Ingeteam Energy, S.A. | Device for conversion of direct current into alternating current and for control of the maximum power for solar panels |
| CN102611141A (en) * | 2012-03-30 | 2012-07-25 | 南京大学 | MPPT (maximum power point tracking) control device and method of photovoltaic inverter based on perturbation method |
| CN102684537A (en) * | 2012-05-22 | 2012-09-19 | 于晶荣 | Maximal power point tracking control method for single-phase single-stage photovoltaic inverter |
| CN102768555A (en) * | 2011-12-19 | 2012-11-07 | 国网电力科学研究院 | High-efficiency mppt control strategy applicable to photovoltaic system |
| CN102088256B (en) * | 2010-12-16 | 2012-12-19 | 永济新时速电机电器有限责任公司 | Tracking control method for maximum power point of photovoltaic cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7478658B2 (en) * | 2006-07-31 | 2009-01-20 | Bridgestone Firestone North American Tire, Llc | Tire having a carcass ply turn-up portion with a concave segment |
-
2013
- 2013-07-03 CN CN201310277128.8A patent/CN103323719B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2110729A1 (en) * | 2007-02-09 | 2009-10-21 | Ingeteam Energy, S.A. | Device for conversion of direct current into alternating current and for control of the maximum power for solar panels |
| CN102088256B (en) * | 2010-12-16 | 2012-12-19 | 永济新时速电机电器有限责任公司 | Tracking control method for maximum power point of photovoltaic cell |
| CN102768555A (en) * | 2011-12-19 | 2012-11-07 | 国网电力科学研究院 | High-efficiency mppt control strategy applicable to photovoltaic system |
| CN102611141A (en) * | 2012-03-30 | 2012-07-25 | 南京大学 | MPPT (maximum power point tracking) control device and method of photovoltaic inverter based on perturbation method |
| CN102684537A (en) * | 2012-05-22 | 2012-09-19 | 于晶荣 | Maximal power point tracking control method for single-phase single-stage photovoltaic inverter |
Non-Patent Citations (2)
| Title |
|---|
| 光伏并网型逆变器MPPT曲线跟踪测试方法研究;徐涛等;《电工电气》;20130531(第05期);第57页左栏最后一段、右栏第3段，第58页左栏第1-4段 * |
| 黄礼明.基于扰动观察法的MPPT控制优化策略.《现代电子技术》.2011,第34卷(第24期), * |
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