Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer

Round 1

Reviewer 1 Report

1. A detailed grammar check is most definitely recommended.

2. The work is encouraging; however, it is advised the theory must be verified against practical (real time) cases. This can be explored in further research work.  

 

Comments for author File: Comments.pdf

Author Response

We would like to thank the reviewer for your time and effort in reviewing the manuscript  "Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer" (electronics). We have considered your comments carefully and addressed as many points as the revised version. Please refer to the attachment for details.

Author Response File: Author Response.pdf

Reviewer 2 Report

Title: Remove the word "Noise" and also "with Different Windings" to get:

Electromagnetic vibration characteristics of inter-turn short circuits in high-frequency transformer

No capacitance coupling was considered, especially at the interleaved windings and elevated frequency it may play a non-ignorable role. At least a short discussion and justification to neglect this phenomenon is required.

Magnetic coupling: Instead of (1) and (2) it will be better to display (1) with all terms and (2) the same after omitting negligible terms.  Since all (three) windings share the same flux, yes, it can be treated as a device with one primary and two secondary windings of which one is simply shortened at its "output".  There are mistakes (opposite signs) in mentioned equations. Please, revise.

No clear description/explanation of (3) and (4) is presented. A source must be cited (if applicable) and more explanation is needed, including commenting on all terms.  How did you take into consideration the moving of what parts of volume as a consequence of what forces? What do you mean by a multi-physical model? How might full is the used commercial software and what was your own contribution to the problem solution, it must be clearly stated. 

On the other hand (5) is standard (trivial) and does not need to be even mentioned. The same applies to (6). By the way, how was the penetration depth reflected in the simulation?  It is doubted whether the details of winding (Fig.4 and Fig.5) are useful.

Figures: Illegible, not properly described. Please make the necessary changes. All features (if visible) must be commented on, and appropriately assessed. Some of the figures seem to be alike - no clear differences. Discussion of the results is insufficient.

The similarity index according to iThenticate was 21%

Author Response

We would like to thank the reviewer for your time and effort in reviewing the manuscript  "Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer" (electronics). We have considered your comments carefully and addressed as many points as the revised version. Please refer to the attachment for details.

Author Response File: Author Response.pdf

Reviewer 3 Report

The paper presents the study about vibration noise characteristics of inter-turn short circuits in high frequency transformer with different windings. Authors say, that common fault of transformer winding, inter-turn short circuit causes severe consequences such as excessive current and serious deformation of winding. They obtained short-circuit current and axial magnetic flux leakage when the inter-turn short circuit occurs at different positions. Authors results show that the electromagnetic effect of the inter-turn short circuit of end-winding is worse than that of middle-winding.

 

Dear author, thank you very much for interesting paper about vibration analysis in case of HFT. This problem is also important in case of regular, means power, transformers. I put some comments and questions.

 

Comments:

1. The introduction is almost well described. Anyway, I would expect some more information about different shapes of deformation of windings.

2. I propose write some information about present methods, which recognize level, kind and place of deformation, such as FRA method – Frequency Response Analysis.

3. Fig.7, and 8 – the axis description is difficult to read. Please correct.

4. I can see that presented results are obtained as results of computer simulation mostly. Did you make any comparison or verification to results of physical measurements?

5. How do authors know that obtained results are correct? Please prove that simulations results are true. Any verification was made?

6. How obtained results can be used in case not HFT only in case of power 50 Hz transformer?

Author Response

We would like to thank the reviewer for your time and effort in reviewing the manuscript  "Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer" (electronics). We have considered your comments carefully and addressed as many points as the revised version. Please refer to the attachment for details.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

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