Analytical Solution for Electromagnetic Torque of Ultrahigh Speed AFPM Motor With Slotless Stator Core and Toroidal Coils

Cheng, Wenjie; Cao, Guangdong; Deng, Zhikai; Xiao, Longfei; Li, Ming

doi:10.1109/tmag.2020.3026575

Cited by 11 publications

(2 citation statements)

References 9 publications

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“…The analytical model considered the large effective air gap and the influence of winding the current harmonics on the air gap magnetic field [15]. The authors of [16] provided a harmonic analytical solution for the armature magnetic field in a polar coordinate system. Previous studies [17,18] have established an analytical model for the armature magnetic field of PMSMs.…”

Section: Introductionmentioning

confidence: 99%

Analytical Solution for Electromagnetic Performance Analysis of Permanent Magnet Synchronous Motor with a Parallel Magnetized Cylindrical Permanent Magnet

Lin,

Geng,

et al. 2024

Machines

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High-speed direct-drive permanent magnet synchronous motors (PMSMs), supported by elastic foil gas bearings, have broad applications, such as in microcompressors. However, some problems remain to be solved for the electrical performance analysis of PMSMs. For example, there is presently no related analytical model that can be used in rotor dynamics expression for this type of PMSM. This study aimed to establish theoretical models for electromagnetic force density and torque. The process involved both theoretical and experimental research. The analytic models of air gap magnetic density, electromagnetic force density, and electromagnetic performance were established for a PMSM with a parallel magnetized cylindrical permanent magnet. The analytic calculation was conducted, and the results of the analytic model were obtained. The analytical model of the electromagnetic torque and force can be applied in theoretical research on rotor dynamics. The model provides a theoretical basis and method for studying the influence of the electromagnetic load on rotor dynamics. A finite element simulation analysis of the electrical performance of the PMSM was carried out. An electrical performance experiment was conducted. The deviation between the experimental result and the theoretical value was less than 4%. This result indicated that the analytic models could be used in a dynamics analysis of compressors that are directly driven by a PMSM for application in engineering and industrial contexts.

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Section: Introductionmentioning

confidence: 99%

Analytical Solution for Electromagnetic Performance Analysis of Permanent Magnet Synchronous Motor with a Parallel Magnetized Cylindrical Permanent Magnet

Lin,

Geng,

et al. 2024

Machines

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show abstract

“…For the interior PM motor, the sub-domain method and the magnetic equivalent circuit method were separately adopted to obtain the flux density distribution of the motor [33,34]. For the axial-flux PM motors, the analytical method could also be adapted to obtain the open-circuit PMs field distribution and the torque ripple [35,36].…”

Section: Introductionmentioning

confidence: 99%

An Analytical Method for Determining Flux Density in Surface-Mounted Permanent Magnet Machines with Unequal Magnetic Poles

Zhai,

Yu,

Shan

et al. 2023

Electronics

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An analytical method was proposed for obtaining the magnetic field distribution for surface-mounted permanent magnet machines with the structure of unequal magnetic poles. Firstly, the Laplace equation and Poisson equation were solved using the method of the separation of variables, and then the mathematical model of the motor structure with unequal magnetic poles was obtained. Secondly, according to the design parameters of the two types of prototypes motors, the flux density in the air gap region of the two types of prototypes motors was calculated, respectively. Thirdly, by comparing the results calculated using the analytical method with the results obtained using the finite element method, the analytical method proposed in this paper was proven to be effective. Moreover, the armature reaction field and the effect of the stator slotting were considered in the mathematical model as well. Overall, the analytical method presented in this paper provides a theoretical basis for the analytical calculation of motors with the structure of unequal magnetic poles.

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Design and Optimization of a Novel External-Rotor Axial Flux Motor for In-Wheel Application

Chang,

Yu,

Ding

et al. 2024

J. Electr. Eng. Technol.

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Analytical Solution for Electromagnetic Torque of Ultrahigh Speed AFPM Motor With Slotless Stator Core and Toroidal Coils

Cited by 11 publications

References 9 publications

Analytical Solution for Electromagnetic Performance Analysis of Permanent Magnet Synchronous Motor with a Parallel Magnetized Cylindrical Permanent Magnet

Analytical Solution for Electromagnetic Performance Analysis of Permanent Magnet Synchronous Motor with a Parallel Magnetized Cylindrical Permanent Magnet

An Analytical Method for Determining Flux Density in Surface-Mounted Permanent Magnet Machines with Unequal Magnetic Poles

Design and Optimization of a Novel External-Rotor Axial Flux Motor for In-Wheel Application

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