A Study on the Design of Novel Slotless Motor Considering Winding Manufacture Process for a Collaborative Robot
, Ju Lee 1 and Donghoon Jung 3,*
Round 1
Reviewer 1 Report
Dear authors and editor!
I think it is very interesting and useful manuscript. A new slotless motor has been developed using finite element simulation, the results of which have been compared with a physical experiment.
It would be nice to indicate in the abstract and in the text of the manuscript what finite element software was used for the calculations.
It is also worth specifying the computational costs (memory size, computation time), depicting the section of the finite element mesh and specifying the number of nodes.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This paper proposes a novel slotless PMSM for collaborative robot. It studies the winding manufacture process of this PMSM in three steps: manufacturing two types of coil units, using injection molding with plastic material such as Polyphenylene Sulfide (PPS), and assembling these units to form stator winding. The design parameters like thickness of magnet and yoke, turns per slot are studied through FEA. Overall, this paper is well organized though a few details should be further explained.
First, the proposed winding manufacturing technique is only advantageous for lap coils but not for non-overlapping coils. More discussions should be provided to show for example the lap coils are better than non-overlapping coils. The selection of pole-slot combination is highly limited due to the unique coil manufacturing process. Can it be promoted to other cases such as the number of slots per pole/phase is not one?
Second, the parametric design should be completed. How will the number of turns in injection molding affect the back-EMF waveform and harmonics?
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
Dear authors, I would like to thank you for give me an opportunity to read a very good research article.
The article consists of literature review, clear goal, novel design, experimental verification.
Only I can suggest to add a few sources exactly about slotless motors to the reference list and introduction section.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 4 Report
This paper analyzes the design of slotless permanent magnet synchronous motor considering the winding manufacturing process. The process consists of three steps, which include the assembling of the coil units, the manufacturing by means of injection molding based on a plastic material and their assembling to form the stator winding.
Although the paper has the potential to be published, the authors should answer the following remarks in order to improve some of the aspects of the manuscript,
1. Introduction section. The state of the art must be improved.
2. Introduction section. The authors are kindly asked to better emphasize and detail the contributions of the paper with respect the state of the art, which from my point of view could be in the area of manufacturing. In its current form the novelties and contributions are unclear, this being a critical point of the manuscript. For example, there are drone manufacturers that incorporate slotless motors in their commercial products.
3. Equations in the manuscript should be either referred or demonstrated.
4. In summary, from the point of view of motor design this paper is not novel, but from the point of view of manufacturing it could have some interest. This part must be enlarged and much more details are required.
I hope a revision of the manuscript based on these remarks can help to improve its quality and readability.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 4 Report
The authors have replied my comments
