Research on Rotor Loss and Rotor Structure Optimization of Rare Earth Permanent Magnet Synchronous Motors in the Weak Field Area

Guohui Yang (), Hao Wu, Danyang Wang, Peng Zhang, Shuaiqi Jiang and Yang Zhang
Additional contact information
Guohui Yang: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China
Hao Wu: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China
Danyang Wang: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China
Peng Zhang: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China
Shuaiqi Jiang: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China
Yang Zhang: Laboratory of Aerospace Servo Actuation and Transmission (LASAT), Beijing Institute of Precision Mechatronics and Controls, Beijing 100076, China

Energies, 2023, vol. 16, issue 21, 1-17

Abstract: The rotor loss of rare earth permanent magnet synchronous motor (PMSM) affects the efficiency and reliability of the motor and is an important research direction of rare earth permanent magnet synchronous motors. In this paper, the influence of rotational speed on the loss of the rotor core and the permanent magnet is analyzed through the analysis of the motor magnetic field and rotor loss calculation. Specifically, with the increase in rotational speed, the weak magnetic current increases, the amplitude of flux density change in the rotor core decreases, and the loss of the rotor core also decreases. The greater the influence of the harmonic current magnetic field on the outside of the rotor, the greater the loss. The core loss on the rotor is mainly distributed on the outside of the rotor. For further engineering applications, this paper analyzes the loss composition of three kinds of motors with different rotor structures and judges the optimal scheme based on the minimum loss. Finally, the correctness of this research is verified by comparing the experimental and simulation results of two kinds of motors with different rotor structures. The research content of this paper can provide a reference for the loss analysis and optimization and rotor structure selection of rare earth permanent magnet synchronous motor rotor design.

Keywords: rare earth permanent magnet synchronous machine; weak magnetic; rotor loss; rotor structure (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: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/21/7423/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/21/7423/ (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:16:y:2023:i:21:p:7423-:d:1273526

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 ().