A Review of Position Sensorless Compound Control for PMSM Drives

Round 1

Reviewer 1 Report

This paper deals with the literature review of position sensorless compound control for PMSM drives. The paper is well structured, and its topic is interesting.  The following problem should be modified.

1. Please re-write the abstract of the paper to describe the topic clearly. 

2. The contribution of the paper is not clear. Please present that clearly in the introduction section. 

3. Please ask a native English speaker or a professional language services to proof read and improve the use of English language in the paper.

4. The sensorless control of PMSM includes low speed and high speed in figure 1 in the paper. Why this review mainly focuses on the compound sensorless control? What is the relationship among low speed control, high speed control and compound control? Please specify that. 

5. The authors have listed lots of literatures about different sensorless control methods. It is suggested to add a table and show the control methods clearly.

6. It is suggested the authors to draw some conclusions from the current research and give the development trend of sensorless technology for PMSM.

Author Response

Please find the response in the attachment. 

Author Response File: Author Response.docx

Reviewer 2 Report

This review paper presents some speed/position estimation techniques for sensorless compound control of PMSM in a wide speed range, which provides comprehensive reference for professional technicians and engineers. There is a lot of valuable information in this paper. My comments are as follows.

(1) The contributions of this review paper should be summarized in the introduction section.

(2) The authors should add some technical difference, not just present the description about high frequency injection and I/F control.

(3) The future trends of sensorless compound control for PMSM drives should be discussed.

(4) Some mathematical descriptions about estimation speed of the motor should be added in the paper.

(5) The readability of this paper should be improved. Some edits and section reorganization are needed to make this paper more useful and easier to be understand for the readers.

Author Response

Please find the response in the attachment. 

Author Response File: Author Response.docx

Reviewer 3 Report

This paper presents a state-of-the-art review on position sensorless control for PMSMs. I believe this is a relevant topic of research and many papers have been published over the years, as such, this type of review is welcomed. In my opinion, the paper is well written, figures present high quality and it is of value for other researchers in this field. Considering this, I recommend this paper for publication.

A few suggestions for the authors to further improve the manuscript:

1.      Consider including additional references, as I believe the paper could be enriched a little bit more with additional papers. Note that there are thousand of publications in this topic. Although you cannot possibly cover them all, please try to include some more examples.

2.      Kindly go over the text once more and locate minor typos and English mistakes left in the original text.

Author Response

Please find the response in the attachment. 

Author Response File: Author Response.docx