Hybrid Carrier Frequency Modulation Based on Rotor Position to Reduce Sideband Vibro-Acoustics in PMSM Used by Electric Vehicles
Round 1
Reviewer 1 Report
The paper presents a novel hybrid carrier frequency modulation technique to reduce the harmonics and the vibro acoustic responses in a pmsm machine. The introduction of the paper shows the importance of the topic, however the novelty of the paper is not discussed, well. This is the main issue with the paper, some other solution and some comparison with these other solutions should be discussed here.
Minor remarks:
for example Figure 11-12 shows the results from the different methodologies, it would be nice to plot them on the same image to see the difference between the two solutions.
Author Response
Dear Editors and reviewers,
We appreciate your insightful comments. Your constructive suggestions give us a great help to improve the manuscript. The original title:
‘Hybrid Carrier Frequency Modulation Based on Rotor Position to Reduce Sideband Vibro-acoustics in PMSM Used by Electric Vehicle’ (ID: wevj-1313673)
Since received the comments, several revision meetings have been held. We feel very grateful that the reviewers accept the improvements in the methodological and technical contents. Building on existing achievements and results, we take fully respect for the comments and suggestions of the reviewers.
The linguistic proofreading has been discussed and checked carefully, and every comment has a complete response. We also made a point-to-point response to each comment raised. It includes not only our modifications but also the comprehensive answers to the reviewer’s questions.
In the rest of this response letter, words in green are the comments, words in black are our responses, and words in red are the changes we have introduced.
The detailed reply is in this attachment. We hope this revised version will meet the requirements of the reviewers and the publication standards of the journal.
Sincerely yours,
Zizhen Qiu, Prof. Yong Chen, Xiaozhe Lin, Haiquan Cheng, Liming Zhang, and Prof. Xu Liu
Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,
Hebei University of Technology, Tianjin 300130, P. R.China
&
Zhejiang Geely Automobile Co., Ltd.
&
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Tech-nology, Tianjin 300130, China.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
In this study, the authors proposed a modified space vector pulse width modulation (SVPWM) technique implemented as HCFM (Hybrid Carrier Frequency Modulation) to reduce sideband current harmonic components and vibroacoustic response.
The principle and implementation of the proposed HCFM technology is first presented to improve the fixed carrier frequency through sawtooth and random signal-based joint modulation based on the rotor position. Finally, it was verified by an experimental test.
Experimental testing has shown that the magnitude of the sideband current harmonics can be reduced to about 20 dB/Hz, resulting in vibration reduction of 0.12 m/s2 and acoustic noise reduction of 10 dBA.
Overall, it is written simply, so I think the authors need a sufficient description of the proposed method.
1) In particular, in the introduction, the explanation of the purpose of this study and the method used is insufficient.
2) And the explanation for Chapter 2 was written too briefly, so there is not enough explanation. The explanation of the process leading to the experiment in Chapter 3 is insufficient and too urgent. I hope that the method proposed by the authors in Chapter 2 will be sufficiently described.
3) Although the experimental results in Chapter 3 were written in the main text, it will be much easier for readers to understand by comparing them in a separate table.
Author Response
Dear Editors and reviewers,
We appreciate your insightful comments. Your constructive suggestions give us a great help to improve the manuscript. The original title:
‘Hybrid Carrier Frequency Modulation Based on Rotor Position to Reduce Sideband Vibro-acoustics in PMSM Used by Electric Vehicle’ (ID: wevj-1313673)
Since received the comments, several revision meetings have been held. We feel very grateful that the reviewers accept the improvements in the methodological and technical contents. Building on existing achievements and results, we take fully respect for the comments and suggestions of the reviewers.
The linguistic proofreading has been discussed and checked carefully, and every comment has a complete response. We also made a point-to-point response to each comment raised. It includes not only our modifications but also the comprehensive answers to the reviewer’s questions.
In the rest of this response letter, words in green are the comments, words in black are our responses, and words in red are the changes we have introduced.
The detailed reply is in this attachment. We hope this revised version will meet the requirements of the reviewers and the publication standards of the journal.
Sincerely yours,
Zizhen Qiu, Prof. Yong Chen, Xiaozhe Lin, Haiquan Cheng, Liming Zhang, and Prof. Xu Liu
Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,
Hebei University of Technology, Tianjin 300130, P. R.China
&
Zhejiang Geely Automobile Co., Ltd.
&
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Tech-nology, Tianjin 300130, China.
Author Response File: Author Response.pdf
Reviewer 3 Report
In this paper, a hybrid carrier frequency modulation based on rotor position to reduce sideband vibro-acoustics in PMSM used by electric vehicles is presented.
The paper is well written and organized. Anyway, some points are not clear and some improvements are required:
1. The introduction is poor. To highlight the importance of the topic, it should be mentioned that noise, vibration and harshness in PMSM can be also due to a fault in the motor, adding some works:
- M. Nienhaus et Al., "Detection of stator turns short-circuit during sensorless operation by means of the Direct Flux Control technique," 2020 AEIT International Annual Conference (AEIT), 2020, pp. 1-6, doi: 10.23919/AEIT50178.2020.9241161.
2. All the parameters introduced in the equations should be explained. Although it can be intuitive, please explain better what U4q U6Q represents in (1).
3. In (1) and (2) U4q and U6q represents the modules. In (4) they are expressed as vectors. Also, the expression of the phase should be included (or explained).
4. A zoom view of Fig. 4 should be included in the paper.
5. In the conclusions section, it should be interesting if the authors propose future works related to this research. Can this technique be adapted for other types of motors?
Author Response
Dear Editors and reviewers,
We appreciate your insightful comments. Your constructive suggestions give us a great help to improve the manuscript. The original title:
‘Hybrid Carrier Frequency Modulation Based on Rotor Position to Reduce Sideband Vibro-acoustics in PMSM Used by Electric Vehicle’ (ID: wevj-1313673)
Since received the comments, several revision meetings have been held. We feel very grateful that the reviewers accept the improvements in the methodological and technical contents. Building on existing achievements and results, we take fully respect for the comments and suggestions of the reviewers.
The linguistic proofreading has been discussed and checked carefully, and every comment has a complete response. We also made a point-to-point response to each comment raised. It includes not only our modifications but also the comprehensive answers to the reviewer’s questions.
In the rest of this response letter, words in green are the comments, words in black are our responses, and words in red are the changes we have introduced.
The detailed reply is in this attachment. We hope this revised version will meet the requirements of the reviewers and the publication standards of the journal.
Sincerely yours,
Zizhen Qiu, Prof. Yong Chen, Xiaozhe Lin, Haiquan Cheng, Liming Zhang, and Prof. Xu Liu
Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,
Hebei University of Technology, Tianjin 300130, P. R.China
&
Zhejiang Geely Automobile Co., Ltd.
&
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Tech-nology, Tianjin 300130, China.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The authors answered all of my questions.
Reviewer 3 Report
All the requested changes have been improved and the quality of the paper has been significantly improved.
The problem related to the reference "Error! Reference source not found." must be solved.
