Research and Development of Adjustable Discontinuous Pulse Width Modulation Method for Three-Phase Voltage Source Inverter

Round 1

Reviewer 1 Report

 Some main issues are given below:  

1) In particular, how does this work stand
out from the other reported works on the same topic.

2) Please add future plans/ advice in the conclusion.

3) The legibility of figures 3-6 should be increased, please provide high-resolution figures.

4) Please recheck all the abbreviation. Author may
want to proofread the article before submitting the final version to be
published.

5) A temperature range should be corrected from 80-120 to 60-100 or similar.

6) In Section 4.2, the MI range must be expanded to 0.5-1.0 to expand the analysis of your method.

Author Response

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Author Response File: Author Response.docx

Reviewer 2 Report

In this work, the authors have tried to ensure the losses reduction at higher temperatures by shifting from continuous PWM to discontinuous PWM. While the authors’ efforts are commended, the reviewer has the following comments: 

 

1.

The title needs revision where actual work is reflected.

2.

There is nothing like "Three-phase voltage inverter". It must be "Three-phase voltage source inverter".

3.

What are PCDPWM and NCDPWM. The authors have not given their full forms. Neither they have referred to any previous literature.

4.

The authors claim that in their opinion the adjustable transition between CPWM and DPWM will lead to lower switching losses. However, this will increase the neutral point ripple content and the THD. The solution will never create a compromise between the output voltage harmonic distortion and switching losses, as claimed. The reason is that whenever the inverter will be operated with DPWM at higher temperature, there will be higher harmonic content in lower frequency domain. And the filter is not designed for that range. This will lead to more harmonic heating of the machine and may lead to its burning.

5.

What is the relationship between the temperature and the reference voltage? Is it an expression or it is a random relationship.

6.

Just showing the PWM waveforms is not sufficient to prove the efficacy over already existing modulation strategies. Other parameters need to be considered.

 

Author Response

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Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

Thank you for making minor updates in the revised version. 

The authors need to add very clear novelty statements and contributions in comparison with relevant existing techniques in the introduction section of the paper. Need to demonstrate why the proposed method is novel? 

Literature review and research gap need to be elaborated more. This part of the paper is extremely shallow. The reviewer would like to see significant improvements in the revised version of the manuscript. 

Thanks. 

Author Response

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Author Response File: Author Response.docx