CN102539520A - Method for detecting noise of micro-plasma in solar battery detection system - Google Patents
Method for detecting noise of micro-plasma in solar battery detection system Download PDFInfo
- Publication number
- CN102539520A CN102539520A CN201110441043XA CN201110441043A CN102539520A CN 102539520 A CN102539520 A CN 102539520A CN 201110441043X A CN201110441043X A CN 201110441043XA CN 201110441043 A CN201110441043 A CN 201110441043A CN 102539520 A CN102539520 A CN 102539520A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- detection system
- solar battery
- noise
- noise signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention provides a method of detecting the noise of micro-plasma in a solar battery detection system, which comprises the steps of: step A: placing the solar battery in a reverse bias condition; step C: adjusting the bias voltage of the solar battery to obtain a noise signal of the solar battery; step D: extracting the frequency domain characteristic of the noise signal; step E: extracting the time domain characteristic of the noise signal; step F: generating duty ratio information of a pulse current; and step G: generating the width of a breakdown area. The method of the invention can detect the width of the breakdown area of the solar battery by analyzing the noise of the micro-plasma of the solar battery, and the detection precision of the method is higher than the detection precision of the image detection method.
Description
Technical field
The present invention relates to the solar cell detection system, particularly, relate to the microplasma noise detecting method in the solar cell detection system.
Background technology
There is abundant solar energy resources in China, and solar energy power generating has obtained widespread use in a lot of fields such as communication, traffic, oil, the electrification of the countryside, the product for civilian use.The quality of assurance solar photovoltaic generation system not only depends on the design of system, also depends on the quality of each parts product of construction system.Photovoltaic module is as the critical piece of solar photovoltaic generation system, and the quality of its product is very important.For guaranteeing the quality of this product, country has formulated relevant examination criteria, and in the production run of enterprise, the accuracy of its parameter detecting is directly to embody the key factor of assembly quality, so the detection link when component package is dispatched from the factory is particularly important.Mostly checkout equipment of the prior art is to detect through the IMAQ identification mode, and its accuracy of detection is not high.
Summary of the invention
To defective of the prior art, the purpose of this invention is to provide the microplasma noise detecting method in a kind of solar cell detection system.
Microplasma noise detecting method according in the solar cell detection system provided by the invention comprises the steps:
Steps A: solar cell is placed anti-testing circuit partially, make solar cell be in the reverse bias condition state;
Step B: utilize shading box to obtain solar cell and whether damage at the no optical condition solar cell that judges;
Step C: if solar cell does not damage, the bias voltage of then adjusting solar cell is to obtain the noise signal of solar cell;
Step D: extract the frequency domain character of said noise signal, confirm the value of power spectrum density according to said frequency domain character;
Step e: extract the temporal signatures of said noise signal, confirm the value of pulse current according to said temporal signatures;
Step F: according to the value of said power spectrum density and the duty cycle information that is worth the production burst electric current most of pulse current;
Step G: the duty cycle information according to said pulse current generates the width that the breakdown area takes place,
Wherein, said step C, step D, step e, step F, step G carry out under no optical condition.
Preferably, the voltage of the bias voltage of solar cell adjustment step-length is less than 0.03V.
Preferably, voltage adjustment step-length is 0.01V.
The present invention can detect the breakdown area width of solar battery sheet through little plasma noise of analyzing solar cell, and accuracy of detection is higher than image detecting method.
Description of drawings
Through reading the detailed description of non-limiting example being done with reference to following accompanying drawing, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 illustrates according to the positively biased testing circuit principle schematic among the embodiment of the microplasma noise detecting method in the solar cell detection system of the present invention.
Embodiment
Microplasma noise detecting method according in the solar cell detection system provided by the invention comprises step: steps A: solar cell is placed anti-testing circuit partially, make solar cell be in the reverse bias condition state; Step B: utilize shading box to obtain solar cell and whether damage at the no optical condition solar cell that judges; Step C: if solar cell does not damage, the bias voltage of then adjusting solar cell is to obtain the noise signal of solar cell; Step D: extract the frequency domain character of said noise signal, confirm the value of power spectrum density according to said frequency domain character; Step e: extract the temporal signatures of said noise signal, confirm the value of pulse current according to said temporal signatures; Step F: according to the value of said power spectrum density and the duty cycle information that is worth the production burst electric current most of pulse current; Step G: the duty cycle information according to said pulse current generates the width that the breakdown area takes place, and wherein, said step C, step D, step e, step F, step G carry out under no optical condition.
Preferably, the voltage of the bias voltage of solar cell adjustment step-length is less than 0.03V.Preferably, voltage adjustment step-length is 0.01V.Wherein, said anti-inclined to one side testing circuit is preferably as shown in Figure 1, and said solar cell 1 and pull-up resistor 2 are connected in the said anti-testing circuit partially.
More than specific embodiment of the present invention is described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present invention.
Claims (3)
1. the microplasma noise detecting method in the solar cell detection system is characterized in that, comprises the steps:
Steps A: solar cell is placed anti-testing circuit partially, make solar cell be in the reverse bias condition state;
Step B: utilize shading box to obtain solar cell and whether damage at the no optical condition solar cell that judges;
Step C: if solar cell does not damage, the bias voltage of then adjusting solar cell is to obtain the noise signal of solar cell;
Step D: extract the frequency domain character of said noise signal, confirm the value of power spectrum density according to said frequency domain character;
Step e: extract the temporal signatures of said noise signal, confirm the value of pulse current according to said temporal signatures;
Step F: according to the value of said power spectrum density and the duty cycle information that is worth the production burst electric current most of pulse current;
Step G: the duty cycle information according to said pulse current generates the width that the breakdown area takes place,
Wherein, said step C, step D, step e, step F, step G carry out under no optical condition.
2. the microplasma noise detecting method in the solar cell detection system according to claim 1 is characterized in that, the voltage adjustment step-length of the bias voltage of solar cell is less than 0.03V.
3. the microplasma noise detecting method in the solar cell detection system according to claim 2 is characterized in that, voltage adjustment step-length is 0.01V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441043XA CN102539520A (en) | 2011-12-26 | 2011-12-26 | Method for detecting noise of micro-plasma in solar battery detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441043XA CN102539520A (en) | 2011-12-26 | 2011-12-26 | Method for detecting noise of micro-plasma in solar battery detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102539520A true CN102539520A (en) | 2012-07-04 |
Family
ID=46346931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110441043XA Pending CN102539520A (en) | 2011-12-26 | 2011-12-26 | Method for detecting noise of micro-plasma in solar battery detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102539520A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846193A (en) * | 2017-12-14 | 2018-03-27 | 西安电子科技大学 | A kind of performance test methods of solar cell reverse breakdown three phases |
| CN111489980A (en) * | 2019-10-22 | 2020-08-04 | 国家电投集团西安太阳能电力有限公司 | Sensitive detection method for defects of solar cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822973A (en) * | 1981-08-04 | 1983-02-10 | Shimada Phys & Chem Ind Co Ltd | Quality deciding method of p-n junction semiconductor element |
| CN102095917A (en) * | 2010-11-30 | 2011-06-15 | 西安电子科技大学 | Test method for current noise of high-resistance device and medium material |
-
2011
- 2011-12-26 CN CN201110441043XA patent/CN102539520A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822973A (en) * | 1981-08-04 | 1983-02-10 | Shimada Phys & Chem Ind Co Ltd | Quality deciding method of p-n junction semiconductor element |
| CN102095917A (en) * | 2010-11-30 | 2011-06-15 | 西安电子科技大学 | Test method for current noise of high-resistance device and medium material |
Non-Patent Citations (5)
| Title |
|---|
| ALONSO-GARCIA M C ET AL: "Analysis and modelling the reverse characteristic of photovoltaic cells", 《SOLAR ENERGY MATERIALS AND SOLAR CELLS》 * |
| CHOBOLA Z: "Noise as a tool for non-destructive testing of single-crystal silicon solar cells", 《MICROELECTRONICS RELIABILITY》 * |
| MACKU R ET AL: "Study of solar cells defects via noise measurement", 《ELECTRONICS TECHNOLOGY》 * |
| MARINOV O ET AL: "Theory of microplasma fluctuations and noise in silicon diode in avalanche breakdown", 《JOURNAL OF APPLIED PHYSICS》 * |
| 彭丽娟: "基于噪声的太阳能电池检测方法", 《万方学位论文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846193A (en) * | 2017-12-14 | 2018-03-27 | 西安电子科技大学 | A kind of performance test methods of solar cell reverse breakdown three phases |
| CN107846193B (en) * | 2017-12-14 | 2019-09-03 | 西安电子科技大学 | A kind of performance test methods of solar battery reverse breakdown three phases |
| CN111489980A (en) * | 2019-10-22 | 2020-08-04 | 国家电投集团西安太阳能电力有限公司 | Sensitive detection method for defects of solar cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4780416B2 (en) | Solar cell array fault diagnosis method | |
| CN101975911B (en) | Earth fault judging method for overhead line fault indicator | |
| Givi et al. | Switch fault diagnosis and capacitor lifetime monitoring technique for DC–DC converters using a single sensor | |
| EP3779475B1 (en) | Insulation detection circuit and insulation detection method | |
| CN102854366B (en) | Low current measuring device and low current measuring method in direct-current power distribution and consumption system | |
| CN103675544B (en) | Fault Signal Analyses in HV Transmission based on optimized algorithm detects and method for waveform identification | |
| CN104849628A (en) | Fault analysis detection method for cable accessory | |
| CN101311742B (en) | Method for testing solar battery assembly efficiency | |
| CN104297577A (en) | Super capacitor-based aging state estimation detection system and method | |
| TW201122506A (en) | Method and device for characterizing at least one solar cell module | |
| CN104333383A (en) | FPGA-based A/D real-time fault diagnosing method | |
| CN106054106A (en) | Watt-hour meter clock abnormality automatic detection method based on power line carrier | |
| CN103197221B (en) | Detection method of photovoltaic cell | |
| CN102565187A (en) | Method for detecting reverse bias noise in solar cell detection system | |
| CN102539520A (en) | Method for detecting noise of micro-plasma in solar battery detection system | |
| CN201662583U (en) | Ultrahigh-frequency pulse generator | |
| WO2018003825A1 (en) | Transmission device for current signal of solar string | |
| Eisgruber et al. | Extraction of individual‐cell photocurrents and shunt resistances in encapsulated modules using large‐scale laser scanning | |
| CN102185335A (en) | Novel island detection method and system | |
| CN103969498A (en) | High-power high-frequency power supply output overvoltage detection circuit | |
| CN104270219B (en) | A kind of device for analyzing IRIG-B time symbols | |
| CN102565134A (en) | Forward bias noise detection method in solar cell detection system | |
| CN102590725A (en) | Method for detecting and judging occurrence of polarization phenomenon of solar cell | |
| CN111834494B (en) | Preparation method, device and equipment of battery assembly and storage medium | |
| CN103008260A (en) | System for automatically separating electric parameters of components on flexible photovoltaic component manufacturing production line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |