Field Reconstruction Method for Linear Tubular Permanent Magnet Motor

Kim, Ki-Hoon; Woo, Dong-Kyun

doi:10.1109/access.2020.3023907

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…The virtual air-gap sections were obtained from the spatial field interpolated with 11 lattices. The cogging torque was calculated in (20) and the reconstructed open-circuit field in (7) was used. Using the reconstructed armature reaction field (1) and open-circuit field (7), the load torque was calculated in ( 18)- (19).…”

Section: A Electromagnetic Torquementioning

confidence: 99%

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Novel Quasi-Three-Dimensional Modeling of Axial Flux In-Wheel Motor With Permanent Magnet Skew

Kim

Woo

2022

IEEE Access

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This paper presents a characteristic analysis of axial flux permanent magnet machines (AFPMMs) for in-wheel electric vehicles. Preferentially, a novel quasi-3-D model is developed for the fast and accurate design of AFPMMs. In electromagnetic field analysis, combined with field reconstruction method, the computation time of 2-D solutions is significantly reduced. With the use of time sweeping of the basis function, only the static finite element (FE) analysis is performed to calculate the air-gap flux distribution at the entire rotor position, whereas the conventional 2-D solutions require a transient FE analysis. In the shape sweeping process of the basis function, the virtual air-gap section method is introduced to take into account that the ratio of slot opening to slot pitch is different depending on the radius of analysis plane, which causes errors in the analysis results of the conventional quasi-3-D method. The virtual air-gap sections are obtained by interpolation of the spatial field between the mapped cylindrical planes. The proposed technique reduces the number of 2-D analysis planes required for high accuracy in the conventional quasi-3-D method, and it can also predict the air-gap magnetic flux distribution for skewed permanent magnets without additional FE analysis. Finally, using the magnetic fields calculated in the proposed method, the electromagnetic performances of the AFPMM are calculated, such as load torque, cogging torque, attraction force, and back-EMF. The analysis results were verified by comparison with the measurement results.INDEX TERMS Axial flux permanent magnet machine, in-wheel motor, magnetic field reconstruction, permanent magnet skew, quasi-3-D finite element analysis, virtual air-gap section method.

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Section: A Electromagnetic Torquementioning

confidence: 99%

“…In electromagnetic field analysis, the field reconstruction (FR) method has the advantage of reducing time cost [20]- [23]. The FR method reconstructs the armature reaction field and the open-circuit field using a basis function.…”

Section: Introductionmentioning

confidence: 99%

Novel Quasi-Three-Dimensional Modeling of Axial Flux In-Wheel Motor With Permanent Magnet Skew

Kim

Woo

2022

IEEE Access

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“…FRM was proposed in [22], [23] for the first time to analyze Permanent Magnet (PM) synchronous machine. Thereafter, this method was used to model squirrel cage induction machines [24], [25], switched reluctance machines [26], axial-flux PM motor [27], [28], linear tubular PM motor [29], doubly-fed induction generator [30], and also the calculation of high-frequency electromagnetic force for PM synchronous machine [31].…”

Section: Introductionmentioning

confidence: 99%

“…Each magnetic flux is reconstructed using basis functions. The basis functions are obtained from FEM and can be used to calculate the magnetic field for any winding current or mover position without an additional Finite Element Analysis (FEA) [22], [29]. Therefore, the computational burden of modeling can be greatly reduced.…”

Section: Introductionmentioning

confidence: 99%

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

Saneie

Nasiri‐Gheidari

Belahcen

2023

IEEE Trans. Instrum. Meas.

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In this paper, Field-Reconstruction Method (FRM) is proposed for predicting the performance of different types of rotational resolvers, including Wound-Rotor (WR) and Variable Reluctance (VR) ones. The main features of the developed method are comparable accuracy with that of the Finite Element Method (FEM) as well as much less computational burden. The deviation of the developed model in the prediction of position error of WR and VR resolvers is less than 3%. While its simulation time is between 30 and 150 times faster than FEM, depending on the resolver type. Accordingly, the proposed model can be used for the design and optimization of different resolvers. Experimental tests on the prototype WR resolver verify the success of the analysis in the modeling of the resolvers.

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“…This paper presents an effective method for magnetic field analysis of 3-D structures. The proposed technique is based on the field reconstruction method (FRM) [ 15 , 16 , 17 ]. Using the basis function of the FRM, the entire magnetic field is reconstructed by sweeping the reference magnetic flux distribution obtained from the static FE analysis.…”

Section: Introductionmentioning

confidence: 99%

Fast Design Optimization and Comparative Analysis for Linear Permanent Magnet Motor with Magnet Skew, Auxiliary Tooth and Overhang Structure

Kim

Woo

2022

Sensors

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This paper presents a fast design optimization using an effective characteristic analysis for linear permanent magnet motors (LPMMs) with techniques for improving motor performance such as using an auxiliary tooth, permanent magnet (PM) skew, and overhang structures. These techniques have different effects on the characteristics of the LPMM depending on the combinations of each other, resulting in complexity in the design optimization process. In particular, the three-dimensional (3-D) effect of the PM skew and overhang structure takes a lot of time to be analyzed. To deal with this problem, an effective magnetic field analysis method and a novel optimization algorithm are proposed. Preferentially, the field reconstruction method is used for a fast and accurate evaluation of the magnetic field of the LPMM. In the proposed magnetic field analysis method, the change of magnetic field distribution due to the addition of an auxiliary tooth is predicted, and the 3-D magnetic field effect of PM skew and overhang structure is considered. By reducing the computational burden in the magnetic field analysis, the electromagnetic characteristics of LPMMs can be calculated quickly, such as detent force, end force, thrust force, and back-EMF. The effect of the auxiliary tooth and overhang structure on the optimal PM skew length is investigated with comparative study results. Subsequently, the proposed optimization algorithm has the advantage of reducing time cost by providing multimodal optimization and robustness evaluation of local peaks at the same time. The proposed method is verified via comparison with finite element analysis and experimental results.

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Field Reconstruction Method for Linear Tubular Permanent Magnet Motor

Cited by 5 publications

References 27 publications

Novel Quasi-Three-Dimensional Modeling of Axial Flux In-Wheel Motor With Permanent Magnet Skew

Novel Quasi-Three-Dimensional Modeling of Axial Flux In-Wheel Motor With Permanent Magnet Skew

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

Fast Design Optimization and Comparative Analysis for Linear Permanent Magnet Motor with Magnet Skew, Auxiliary Tooth and Overhang Structure

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