Three dimensional Magnetic Field Analysis of a Lundell Alternator.

Hayashi, Shohei; Fujita, Yoshitake; Kometani, Haruyuki; Sakabe, S.

doi:10.1541/ieejias.114.1284

Cited by 8 publications

(9 citation statements)

References 2 publications

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“…are imposed on the periodic boundary [9], where B and p denote magnetic flux density and pole numbers. The magnetic fields in the whole motor domain can be known from analysis of the onepole model, shown in…”

Section: Domain and Boundary Conditionmentioning

confidence: 99%

Three-Dimensional Shape Optimization of Claw-Pole-Motors

Hidaka

Igarashi²

2018

JASSE

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This paper presents three-dimensional shape optimization of claw-pole motors. In the present method, the iron core of a claw-pole motor is subdivided into uniform voxel finite elements. The material attribute of each element, {1(core), 0(air)}, is determined from the shape parameters which vary in the optimization process. Thanks to this approach, time-consuming for mesh generation in the optimization process can be avoided. Moreover appropriately optimization algorithm is selected for reducing the computational costs. The core shape of a claw-pole motor is optimized so that the induced voltages at low and high speed conditions are maximized.

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Section: Domain and Boundary Conditionmentioning

confidence: 99%

Three-Dimensional Shape Optimization of Claw-Pole-Motors

Hidaka

Igarashi²

2018

JASSE

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“…Meanwhile, motor inductance has a nonlinear characteristic owing to magnetic saturation. Therefore, electromagnetic field analysis must be performed to express motor inductance (5)(6) . Fig.…”

Section: Introductionmentioning

confidence: 99%

“…2(a) illustrates the rotor of a claw-pole motor. To calculate the inductance characteristics, three-dimensional magnetic field analysis must be performed to express the complicated magnetic structure of the claw-shaped rotors (5)(6) . An analysis model of a claw-pole motor is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mathematical-model-based Simulation of an Automotive Alternator Considering the Operation of a Rectifying Circuit

et al. 2021

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This paper presents a method for the mathematical-model-based simulation of automotive alternators. In the proposed method, a rectifier and motor are expressed by an electrical circuit constant that includes resistance and inductance. Moreover, a power correction factor is introduced for considering the operation of the rectifier. Owing to this, the calculation accuracy can be improved over that of a conventional mathematical simulation method. To validate the effectiveness, calculation results are compared with the experimental results.

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“…Claw-pole alternators are widely used for generators of automobiles (1) . According to an increase in electric parts in automobiles, required electricity considerably increases in recent years.…”

Section: Introductionmentioning

confidence: 99%

Characteristics Analysis of Claw-Pole Alternator for Automobiles by Nonlinear Magnetic Field Decomposition for Armature Reaction

et al. 2017

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In this study, we investigate the characteristics of claw-pole alternators for automobiles from the results of both calculation and experiments. Nonlinear 3-D finite element analysis is employed to take the claw-pole shape into account. The calculated characteristics are compared with the experimental results in order to confirm the validity of the analysis. Then, the magnetic field is decomposed according to the field sources in order to understand the effect of armature reaction. It is clarified that the large armature reaction in the claw-pole alternator causes saturation of the electrical output and an increase in the harmonic losses in the machine. The possibility of improving the characteristics by reducing the armature reaction is also clarified.

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Three dimensional Magnetic Field Analysis of a Lundell Alternator.

Cited by 8 publications

References 2 publications

Three-Dimensional Shape Optimization of Claw-Pole-Motors

Three-Dimensional Shape Optimization of Claw-Pole-Motors

Mathematical-model-based Simulation of an Automotive Alternator Considering the Operation of a Rectifying Circuit

Characteristics Analysis of Claw-Pole Alternator for Automobiles by Nonlinear Magnetic Field Decomposition for Armature Reaction

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