Characterization of the Potential Effects of EMC Filters for Power Converters on Narrowband Power Line Communications

Round 1

Reviewer 1 Report

In general, the paper does not elaborate the details of the study. In the current format, the paper seems unpublishable.

1. All the abbreviations need to be elaborated the first time they are used in the paper.

2. The introduction and literature review is very short. More comprehensive study and analysis of existing literature should be provided.

3. The details of EMC filters need to be provided.

4. The test setup is explained very briefly.

5. More visual presentation of the filters and experimental setup needs to be provided.

6. This work seems to be a pure experimental work without much theoretical novelty. Only SNR curves for 4 filters ae presented without thorough analysis.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

This paper studied the effect of EMC filters on Narrowband Power Line Communications. The laboratory trail results show that when the filter connects near the receiver, the attenuation could cause side effect to the system. This work is a good case study on how to understand the effect of EMC filter during the design state of the product. This paper is in a good term for publication with a small suggestion as:

- In Figure 2., it would be better to state the number of each LISN. Since in the text, first, second and third LISN are mentioned.

Author Response

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Reviewer 3 Report

This paper is interesting but its lack of clarity on some important points strongly decreases its impact. I suggest major revisions before acceptance.

Some comments and suggestions below :

• I have absolutely not understood the relationship / difference between both setups shown in Figures 1 and 2. Figure 1 seems to be more conceptual but this is really unclear. Moreover, what is ‘’electrical grid’’ in this figure ?
• In Figure 3, what is the impedance without any filter ?
• I wonder if the fact to compute the average of an impedance varying the frequency as a sense from a physical point of view. A comment on this would be welcomed.
• In Figure 4, it seems that there is a lower influence of the filter at point B. It does not seem very logical from the thesis developed by the authors. Clarify this point.
• The fact that the attenuation can be lower than 0 dB is almost not discussed in the paper. However, it seems important. Clarify this point too.
• The last sentence of the paragraph just after figure 4 is absolutely unclear. What means ‘’its characteristics need not necessarily be symmetric’’ ?
• In figure 5, it seems that there is some differences between the different curves, unlike the conclusion of the authors. This is maybze negligible but this has to be proven.
• The sentence (page 4) starting by ‘’besides’’ seems paradoxical : a noise is added and SO the tests are not affected by the noise... Clarify it.

Minor comments :

The acronym NB-PLC is not defined at the first occurrence.

I suggest to define what is a ‘’frame’’.

The quality of the English language can be improved at certain locations : for instance ‘’for frequencies in (at) hundreds of kHz’’ ?

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Thanks for applying the suggested modifications and answering the previous questions. Please see the following minor comments:

1. In the discussion section, please add a table (or any other appropriate option) discussing the advantages/disadvantages and applications of each filter.

2. For Figure 2, please add sub-labels for each filter.

3. In Figure 4, please put label for the equipment. Also, the relationship between the two parts of this figure can get more clear.

4. Adding grids to the plots seem to be necessary.

5. Make the formatting of all the reference in terms of letter capitalization consistent.

6. Make sure that (in the final version) all the figures and tables appear FULLY in the page attached to their captions.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf