Comparative of IEC 60891 and Other Procedures for Temperature and Irradiance Corrections to Measured I–V Characteristics of Photovoltaic Devices

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Very good work, you can see a very thorough examination of the topic and a lot of checked methods. Although the work is of the review type, the authors also performed measurements both for monocrystalline and polycrystalline cells, which additionally increases the substantive value of the Manuscript. I believe that the work is suitable for publication.

I would like to politely remind you that the Introduction Chapter should present the state-of-art.

Lines 47-55 - I don't think this fits into a literature review.

Line 76- “S. Scaling methods” – could you explain why “S” and not e.g. A?

Lines 219 -227 - No order after [31] is [77] then [9,78,79], and [9,59,80] – it should be corrected.

Table 2 – Eg is without any reference [?].

Table 2 – no order.

Line 551 – []?

Please take into account the possibility of placing a diagram of the test rig in Chapter 3. Methodology., near line 956.

Line 958 - Please briefly explain why PT100 is used instead of PT1000 or a thermocouple.

Tables 6, 7, 8, 9, 10, and 11- I think, you should mark the highest and the lowest error %.

This is a review-type Manuscript and only 20 of the 95 literature items are younger than 5 years, it seems that the proportions should be different.

References:

 

[41] IEC 60891:2009 Withdrawn – is it necessary here?

Author Response

Dear Associate Editor and Reviewers:

Please see the attachment. The attached PDF contains the response for the three reviewers.

Thanks a lot

Michel Piliougine

 

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

This is one of the most well organized reports I have read in recent times. The authors have taken a lot of time to carefully investigate and organize the topics in this manuscript. It is extremely well written and answers all the major concerns in the field of measuring PV modules. I heartilyrecommend the paper to be published without any changes to the original version.

Comments on the Quality of English Language

As a minor concern, I would recommend the authors to proof read the manuscript once if there is an opportunity because I did manage to notice a few typos here and there. I believe correcting the english will further elevate this wonderful work they have carried out.

For e.g. Line 400, This procedure 4 is a novelty in IEC 60891:2021 [7] and it can be used to correct to a wide range of irradiance should be

This procedure 4 is a novelty in IEC 60891:2021 [7] and it can be used to correct a 400 wide range of irradiance. 

Similarly Line 411  The second step consists in correcting should be

The second step consists of correcting.

 

Author Response

Dear Associate Editor and Reviewers:

Please see the attachment. The attached PDF contains the response for the three reviewers.

Thanks a lot

Michel Piliougine

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

The article provides a compilation of methods describing the prediction of the performance of photovoltaic cells operating under real conditions and studied in laboratory conditions. In the article, the authors not only refer to literature methods in this field but also unequivocally point out, in their opinion, the best of these methods. They justify their conclusions with a conducted experiment. However, in the reviewer's assessment, the article lacks a clear indication of whether the methods mentioned by the authors, especially the G03 method, which the authors consider the 'best option,' account for changes in the internal temperature of the investigated solar cells during their operation. While the article refers to STC conditions and mentions single and double-diode models, the reviewer understands that the article discusses isothermal studies, but the description of the experimental method lacks an explanation of how the authors ensured isothermal testing conditions. It is not plausible that during regular, continuous operation of solar cells, their temperature would increase by only 3°C (line 963 of the article). Additionally, the article does not provide an explanation of how the investigated solar cells were illuminated. From the literature (e.g., articles with DOI 10.3390/en14196247 or DOI 10.1016/S0026-2692(01)00013-1), it is known that the internal temperature of operating solar cells increases due to self-heating and heat absorption from radiation sources. Therefore, it seems justified to question how the authors ensured isothermal testing conditions during the experiment. The appropriateness of such a high evaluation of the method indicated by the authors is also questionable, given that it is a method verified only at a constant internal temperature of the solar cell and for constant irradiation during its operation. In the reviewer's opinion, the article should clearly indicate the limitations of the G03 method. Furthermore, the paper contains statements at a very general level for a scientific article, such as 'some intrinsic parameters' (line 61) or 'In general, these formulas require knowing in advance the value of the main temperature coefficients and some other internal parameters.' (lines 83, 84). In the reviewer's opinion, it would be necessary to specify what is meant by 'some and some other' formulations. Corrections should also be made to Figures 1 and 2, as the presented schematic diagrams of single and double-diode models would indicate short circuits at the sources and diodes.

Author Response

Dear Associate Editor and Reviewers:

Please see the attachment. The attached PDF contains the response for the three reviewers.

Thanks a lot

Michel Piliougine

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Comments and Suggestions for Authors

Thank you to the authors for sending the explanation. In general, they are sufficient, and those that remain may be considered as falling outside the scope of the purpose of this article.