Three-Phase Multilevel Inverter Using Selective Harmonic Elimination with Marine Predator Algorithm

Round 1

Reviewer 1 Report

The paper presents an interesting new approach for SHE. Here are my comments:

• Figure 1 looks faded.
• Figure 15: losses could also been represented as % of the load power.
• Table 1 shows the execuation time for a fixed number of iterations. MPA gets the best accuracy but takes longer. Could you compare the execution time  and number of iteration fo a given accurary?

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

The work was written in an interesting way. A valuable supplement will be at least a brief reference to the impact of the load on the described inverter with the algorithm.

Does this algorithm improve overall voltage quality, not only harmonics.

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

The manuscript type in the header should be specified as a research article.

However, the overall impression is that it looks like a lab report with some important gaps that need addressing to meet a research journal paper’s criteria.

First, the abstract and conclusion are qualified for only a student assignment, as only qualitative descriptions are provided without any numbers, which is neither informative nor convincing to the target readers.
For instance, "The switching loss is very small and minimal" - how small in numbers?
The authors are suggested adding quantitative results for the key findings (even though you have simulation results only).

Second, the performance comparison with other people’s work is missing in the results analysis part. Note that the states of the arts are normally experimental results in most cases. The authors presented their experimental setup and the basic results on synthesized voltages. However, more experimental results analysis is missing.

Third, the introduction and literature survey sections should be better developed by reviewing more up-to-date publications, e.g. the states of the arts in 11-level three-phase CHB-MLI is recommended below.
J. Li, "Design and Control Optimisation of a Novel Bypass-embedded Multilevel Multicell Inverter for Hybrid Electric Vehicle Drives," 2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), Dubrovnik, Croatia, 2020, pp. 382-385, doi: 10.1109/PEDG48541.2020.9244313.

Fourthly, chapter "8.2. Switching losses" is extremely short. Consider to expand the explanation, or merge with 8.1.

Last but not least, the authors claimed to have performed optimization, i.e. using MPA algorithm to find the optimal switching angles. However, optimization should normally be combined with experimental work, as simulated optimal design is generally not the experimentally optimum. The simulation one must be validated by measurements, then iterations of new designs can be carried out until the measured optimal one is obtained.

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Line 88 missing specification for SHE when it appears the first time in the text.

Same problem for Line 129: PLECS needs to spell in full as Piecewise Linear Electrical Circuit Simulation (PLECS) for the first time.

Figure 8 is missing unites in both (a) and (b).

Figure 8 (c) is not legible - the text and numbers in both axes are too small and distorted. 

Missing statements for "Author Contributions" in the end. 

Major editing in English is required. 

Author Response

Please see the attachment

Author Response File: Author Response.pdf