Research on a Limit Analytical Method for a Low-Speed Micro Permanent Magnet Torque Motor with Back Winding

Shuangshuang Guo, Bo Zhao, Cunshan Zhang, Binglin Lu, Yukang Chu and Peng Yang
Additional contact information
Shuangshuang Guo: School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
Bo Zhao: School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
Cunshan Zhang: School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
Binglin Lu: School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
Yukang Chu: Shandong Shanbo Electric Machine Group Co., Ltd., Zibo 255000, China
Peng Yang: Shandong Shanbo Electric Machine Group Co., Ltd., Zibo 255000, China

Energies, 2022, vol. 15, issue 13, 1-20

Abstract: The conventional permanent magnet torque motor (PMTM) is slotted on the inner surface of the stator core. When the size of the stator core is small, the winding coils are difficult to embed into the slots. To solve the problem, a novel PMTM is presented, which is slotted on the outer surface of the stator core. As a result, the winding coils can be conveniently embedded into the slots from the outer surface of the stator core. The novel structure of the PMTM with back winding (BWPMTM) is introduced, and the advantage of the novel structure is analyzed. Furthermore, this paper proposes a limit analytical method to solve the optimal parameters of the motor which comprehensively considers four constraints: no-load back electromotive force (EMF), torque, temperature and slot space factor. The optimal parameters of the motor are directly solved to maximize torque density within the constrained range. This method avoids repeated iterative processes and greatly reduces the amount of calculation for PMTM design. Electromagnetic performance and thermal performance are analyzed based on the finite element model (FEM). Finally, the building of a prototype and the experimental results obtained with it are discussed. The rationality of the novel structure and the limit analytical method are verified.

Keywords: PMTM; back-winding structure; limit analytical method; FEM (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/13/4662/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/13/4662/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:13:p:4662-:d:847848

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().