A Novel MPPT Technique Based on Combination between the Incremental Conductance and Hysteresis Control Applied in a Standalone PV System
, Ayoub El Gadari 1, Mohcine Mokhlis 2, Youssef Ounejjar 1,*, Lahcen Bejjit 1 and Kamal Al-Haddad 3
Round 1
Reviewer 1 Report
The work is interesting and can be considered. However, some minor language is required. Also figures need to be improved.
Author Response
Thank you for your time and your comments. I have taken your comments into consideration.
Reviewer 2 Report
1. Figures and their captions must be in the center of a line.
2. Tables and their captions must be in the center of a line.
3. Table 1 must be started in a new page.
4. The abbreviation (THD) must be defined in the first mention of it.
5. In The Line 64, The author in text of paper start some statement by The references such as In [20-21] it is shown that............. This must be changed by The name of Authors for this reference in the first statement and mention the Number of reference in the end of statement [21-23] . This comment must be applied in all paper.
6. In line 94 , The start statement by .... In [20] , The reference must written in the end of statement or start by the author name and write the reference in the end of statement.
7.In the line 113, start by
Where
Upper Hysteresis.......
Lower Hysteresis.....
This must be written as a paragraph start by
In Figure 1 .......
8. In Figure 4, what is the meaning of S (Switch) it must be re-drawing.
Author Response
Point 1: Figures and their captions must be in the center of a line.
Response 1: It is done.
Point 2:Tables and their captions must be in the center of a line.
Response 2:it is done.
Point 3: Table 1 must be started in a new page.
Response 3:it is done.
Point 4:The abbreviation (THD) must be defined in the first mention of it.
Response 4:it is done.
Point 5: In The Line 64, The author in text of paper start some statement by The references such as In [20-21] it is shown that............. This must be changed by The name of Authors for this reference in the first statement and mention the Number of reference in the end of statement [21-23] . This comment must be applied in all paper.
Response 5:it is done.
Point 6:In line 94 , The start statement by .... In [20] , The reference must written in the end of statement or start by the author name and write the reference in the end of statement.
Response 6:it is done.
Point 7:In the line 113, start by
Where
Upper Hysteresis.......
Lower Hysteresis.....
This must be written as a paragraph start by
In Figure 1 .......
Response 7:it is done.
Point 8:In Figure 4, what is the meaning of S (Switch) it must be re-drawing.
Response 8:it is done.
Author Response File: 
Author Response.pdf
Reviewer 3 Report
This article is interesting and fits well within the scope of this journal, including power electronics, control, photovoltaic electricity production and power quality. It is generally well written, although there are a few sentences that should be revised, the punctuation in particular (for example, lines 56-63).
There are a few issues that this reviewer would like to see better clarified in the article:
1- The case study, shown in Figure 8 and Figure 9, has extreme temperature variations (not possible in practice: instantaneous variation of 15 K) and of Irradiation. Why such extreme variations chosen? To stress that if the control system works well with this conditions it should work well with real physical conditions? Please elaborate on this.
2- Line 215/Figure 4 and Figure 5: DC link voltage and output voltages vary significantly. For most loads, the power supply should have constant RMS voltage. It is not the case presented here (Figure 15). Please explain what would be the application for the presented case or how would it keep fixed RMS voltage.
3- Comparative study and conclusions: The time differences between the different algorithms in Figure 17 do not seem very high (10-40 ms), neither the power oscillations. Explain better/quantify the advantages of the proposed INC-HYS over the INC-PI and INC-PWM methods. Are other advantages? (for example, easiness or cost of implementation?)
4- The proposed method has good simulation results but no experimental validation is presented. Will this be done?
Some minor aspects:
Lines 59-61: please provide a short description on what are “Packed U-Cells” and “Split Packed U-Cells”.
Line 69: nine- or five-level?
Lines 79-85: For clarity of reading, consider including a illustrative figure here, or editing Figure 3, indicating the MPP and refer it here (for example, by: "cf. Figure 3.").
Line 96: [25] is referred to before [24].
Line 120: “Upper… ON” or “Upper… OFF”?
Line 133-143: IPV or Ip? (please match better Figure 2 and the variables in (7)-(9) And indicate all the currents in Figure 2). What are the variables A and EG in (9)? “…03e-23”: the power is superscript. Line 143: K_i or Ki?
Author Response
Point 1: The case study, shown in Figure 8 and Figure 9, has extreme temperature variations (not possible in practice: instantaneous variation of 15 K) and of Irradiation. Why such extreme variations chosen? To stress that if the control system works well with this conditions it should work well with real physical conditions? Please elaborate on this.
Response 1: The maximum temperature in this work is 39°C and not 15K.
Point 2:Line 215/Figure 4 and Figure 5: DC link voltage and output voltages vary significantly. For most loads, the power supply should have constant RMS voltage. It is not the case presented here (Figure 15). Please explain what would be the application for the presented case or how would it keep fixed RMS voltage.
Response 2:Because author use a DC/AC multilevel converter.
Point 3: Comparative study and conclusions: The time differences between the different algorithms in Figure 17 do not seem very high (10-40 ms), neither the power oscillations. Explain better/quantify the advantages of the proposed INC-HYS over the INC-PI and INC-PWM methods. Are other advantages? (for example, easiness or cost of implementation?)
Response 3:it is done.
Point 4:The proposed method has good simulation results but no experimental validation is presented. Will this be done?
Response 4:In future work, experimental validation will be done.
Author Response File: Author Response.pdf
Reviewer 4 Report
Dear Editor
The manuscript in its current form is suitable for publication.
Author Response
Thank you valuable reviewer.
Author Response File: Author Response.pdf
