Modeling and Analysis of Axial Flux Permanent Magnet Machines With Coexistence of Rotor Radial Deviation and Angular Eccentricity

Tong, Wenming; Dai, Shanhong; Li, Shiqi; Li, Jiansheng; Tang, Renyuan

doi:10.1109/tec.2020.2995880

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…Sometimes, it is necessary to apply assumptions to simplify the obtained model. It may also be necessary to combine the analytical and numerical (3‐D) models 36,46–48 …”

Section: Analytical Modelsmentioning

confidence: 99%

“…A summarized review of AM techniques used to solve the magnetic field on PMSM presented in Table C1. In this table, the calculation of flux density and all other machine quantities for Sd / Ss , internal/external rotor machine using different magnetization pattern has been addressed 1–75 …”

Section: Machine Quantitiesmentioning

confidence: 99%

“…Another criterion of the classification is the number of dimensions, the formulation dimensions carried out in polar or rectangular (Cartesian) coordinates, as indicated for each reference in the eighth column of Table C1 . Last column of Table A2 represents the various consideration and calculations of each reference [1–75].…”

Section: Machine Quantitiesmentioning

confidence: 99%

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A review on analytical models of brushless permanent magnet machines

Abbas,

Iqbal,

Lewicki

et al. 2023

Int J Numerical Modelling

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This study provides an in‐depth investigation of the use of analytical and numerical methods in analyzing electrical machines. Although numerical models such as the finite‐element method (FEM) can handle complex geometries and saturation effects, they have significant computational burdens, are time‐consuming, and are inflexible when it comes to changing machine geometries or input values. Analytical models based on magnetic equivalent circuits (MEC) or solving Maxwell's equations can be faster and more flexible, but less accurate for complex machine structures. The paper focuses on the recent development of analytical models for brushless permanent‐magnet (PM) machines that have become increasingly popular in low and medium‐power applications. The literature review covers the recent developments in analytical models for PM machines with respect to various machine quantities such as magnetic flux density components, induced voltage, inductances, electromagnetic force/torque, efficiency, or unbalanced magnetic force (UMF). It outlines the advantages and disadvantages of different analytical models such as the zero‐dimensional (0‐D), one‐dimensional (1‐D), two‐dimensional (2‐D), and three‐dimensional (3‐D) analytical methods, as well as the Maxwell and basic mathematical analysis. Although the MEC models are faster than the numerical model, they are not as accurate for various structures of electrical machines including a great magnetic air gap. They also note that the analytical models based on the Maxwell equations are faster than the numerical ones and have the potential to obtain acceptable accuracy similar to the numerical models in electrical machines. Overall, this literature review provides valuable insights for researchers and engineers in selecting appropriate analytical models for PM machines. It highlights the trade‐offs between accuracy and computational efficiency when choosing between numerical and analytical models, and the flexibility of analytical models to address changes in machine geometries or input values. Additionally, this helps researchers save time in determining appropriate references regarding the analytical models of brushless PM machines.

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“…Sometimes, it is necessary to apply assumptions to simplify the obtained model. It may also be necessary to combine the analytical and numerical (3‐D) models 36,46–48 …”

Section: Analytical Modelsmentioning

confidence: 99%

Section: Machine Quantitiesmentioning

confidence: 99%

See 1 more Smart Citation

A review on analytical models of brushless permanent magnet machines

Abbas,

Iqbal,

Lewicki

et al. 2023

Int J Numerical Modelling

View full text Add to dashboard Cite

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“…Axial flux permanent magnet machines (AFPMM) are growing more and more popular due to their simple construction, high power density, efficiency, and compactness [1,2]. Depending on the application, AFPMM has various topologies, such as:…”

Section: Introductionmentioning

confidence: 99%

Cogging Torque Reduction Techniques in Axial Flux Permanent Magnet Machines: A Review

Pranjić,

Virtič

2024

Energies

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Axial flux permanent magnet machines have garnered significant attention in recent years due to their numerous advantages in various applications, including electric vehicles, wind turbines, and robotics. However, one of the critical challenges associated with these machines is the presence of cogging torque, which can hinder their efficiency and performance. This review article provides a comprehensive overview of the state-of-the-art techniques employed for cogging torque reduction in Axial Flux Permanent Magnet Machines. Different techniques are described, encompassing geometric optimization, magnet placement, and skewing methods. Firstly, the significance of Axial Flux Permanent Magnet Machines is described, as well as the issue of the cogging torque. In the methods section, a review of the strategies for the reduction of cogging torque is described from various articles, and finally, in the discussion section, a list of actions is presented for cogging torque reduction for different topologies. The novelty of the study is that it combines strategies for cogging torque reduction in a single article.

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“…Due to high efficiency, high power density, and good reliability, permanent magnet electromotor is widely used as the core component of the propulsion system in low-power electric vehicles [1][2][3][4]. Assembly technology and machining accuracy in the manufacturing process are imperfect, and the electromotor may have slight air-gap eccentricity before leaving the factory [5]. When the electromotor runs for a long time under severe and complicated working conditions, the wear of bearings will also lead to eccentric air gap.…”

Section: Introductionmentioning

confidence: 99%

Static Eccentricity Fault Analysis of Surface-Mounted Permanent Magnet Electromotor with Skewed Slots Based on 2D FEA

Wang

2021

WEVJ

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It is of significance to analyze the performance of eccentric electromotor for the research on the electric vehicle wheel drive system’s operational reliabilities. We developed a fast equivalent algorithm in which the two-dimensional finite element calculation results are translated into three-dimensional calculation results. An electromotor with skewed slot was decomposed into straight-slot electromotor units that were series-wound. A prototype electromotor driven by square wave current under healthy and eccentric conditions was calculated, and the computation accuracy of the equivalent algorithm was analyzed. The air-gap magnetic field and induced electromotive force were calculated and contrasted. The study results indicate that the magnetic field distribution and the induced electromotive forces of winding elements with different axis positions were affected transparently by grievous eccentricity, yet the induced electromotive force of one phase winding and average value of torque remained virtually invariable. The reference to reliability analysis of electric vehicle wheel drive system is provided.

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Modeling and Analysis of Axial Flux Permanent Magnet Machines With Coexistence of Rotor Radial Deviation and Angular Eccentricity

Cited by 17 publications

References 29 publications

A review on analytical models of brushless permanent magnet machines

A review on analytical models of brushless permanent magnet machines

Cogging Torque Reduction Techniques in Axial Flux Permanent Magnet Machines: A Review

Static Eccentricity Fault Analysis of Surface-Mounted Permanent Magnet Electromotor with Skewed Slots Based on 2D FEA

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