Efficient Zero-Value-Cross Detection for Single-Phase Mains-Powered Motors: A Comparative Study
Round 1
Reviewer 1 Report
The paper presents four different solutions for zero-value cross detection in single-phase mains-powered motors and evaluates their performance in terms of complexity, dimensions, power dissipation, and response time. The n-MOSFET-based solution is found to be the most suitable, providing a simple design, low power dissipation, and almost instantaneous response.However, there are some problems, such as references, the explanation of the principle and grammar, etc. Detailed comments are listed as follows. Hope they can provide help for improving the quality of this paper.
1) The references to this article are insufficient. The following references are recommended to be added.
(1) Jian Yu, Yu Wen, Lei Yang*, Zhibin Zhao**, Yanjie Guo, Xiao Guo, Monitoring on Triboelectric Nanogenerator and Deep Learning Method, Nano Energy, 2022, 92, 106698.
2）How does the n-MOSFET-based solution compare to other solutions in terms of cost-effectiveness?
3）Can the n-MOSFET-based solution be used in motors with different power ratings?
4）How does the performance of the n-MOSFET-based solution vary with changes in temperature and humidity?
5）What are the limitations of the study in terms of the types of motors and applications that can benefit from the proposed solutions?
6）How does the proposed solution affect the overall efficiency and lifespan of the motor?
Author Response
Please see the attachment
Author Response File: 
Author Response.pdf
Reviewer 2 Report
-P.1. Improve Section1, Introducion up to 1 ½ pp.;
-P.1,Rows 30-34: Why did you choose the four methods for ZVCD? Are there other options?
-P.2, Row 52: „In turn, the triac is governed by the microcontroller.”. Is it the only possibility?
-P.2, Row 72: Can there be another voltage instead of 3.3 V?
-P.3, Fig.2: Why didn't you use a dedicated TTL logic gate from an integrated circuit? Why did you choose the version with discrete components?
-P.3, Fig.3: Why didn't you use a dedicated CMOS logic gate from an integrated circuit? Why did you choose the version with discrete components?
-P.4, Fig.5: This is the solution with comparators and optocouplers.
-P.5, Fig.6: This is the solution with n-MOS depletion-mode transistor and optocouplers.
-Are the circuits in Section 2 simulated?
- Present an electronic assembly for controlling a single phase motor. It appears in the title: „…Single-Phase Mains-Powered Motors”, and there is no electric motor in the work.
-P.7, Fig.9: What do the lines in the figure represent?
-Section 4, Discussion: What other options of ZVCD can be used in practice?
- Section 5, Conclusions: What other research can be developed from this article?
- Improve the references with high quality papers.
Minor editing of English language required.
Author Response
Please see the attachment
Author Response File: Author Response.pdf
Reviewer 3 Report
Even though it may be a work based on widely known circuits, it can be useful in practical applications when designing and implementing power conversion systems and motor drivers. Some aspects for review are the following:
1. The state of the art should be expanded, displaying related works.
2. Please review line 48 since a possible typo is observed.
3. Authors should clarify the main contribution of the article.
4. An introductory paragraph in section 2 is suggested to display the issues addressed.
5. It is recommended to expand the explanation from Figures 7 to 14.
6. In the discussion section, it is recommended to include considerations on the practical limitations of the studied circuits.
Moderate editing of English language required.
Author Response
Please see the attachment
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The authors have addressed the issues I raised previously to my satisfaction, and I have no other questions. I recommend the paper to be accepted.
Reviewer 2 Report
Congratulations for your paper!
Minor editing of English language required.
