3D numerical modeling with FEM operation under load on the alternator claw poles

Stoica, Constantin; Cazacu, Dumitru; Melcescu, Leonard

doi:10.1109/ecai.2015.7301256

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…Because the resistance of the diode that is selected as the module of the rectifier is large under the low-motor-voltage condition, the rectification loss can be reduced by using switching modules for AC-to-DC conversion. Although operation of the synchronous rectification can be simulated by introducing the switching modules in the rectifier, only a limited number of studies have been previously conducted regarding the magnetic coupled analysis of a synchronous rectifier and the corresponding circuit (Hayashi et al , 1994; Hidaka and Igarashi, 2018; Yamazaki et al , 2017; Constantin et al , 2015).…”

Section: Introductionmentioning

confidence: 99%

Novel coupled analysis methods of automotive alternators considering synchronous rectification circuit

Hidaka

2021

COMPEL

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Purpose The purpose of this paper is to develop a novel coupled analysis method for synchronous rectification alternators. Design/methodology/approach An ideal diode module is embedded in a rectification circuit. The resistance of the diode module is set such that it is equal to the on-resistance of the MOS-FET modules in the generation mode. In a mode without power generation, the motor voltage is less than the bus voltage; a sufficiently large value is defined for simulating the infinite resistance. Findings Because there is no need to decide the switch timing in advance, only one round of coupled analysis is needed to evaluate the synchronous rectification alternators. Research limitations/implications As limited case study is denoted in this paper, much more case studies are needed to be discussed. Practical implications By using the proposed method, it can be fulfilled that generation characteristic of automotive alternators can be evaluated without using the control simulation or pre-conducted analysis to decide the switch timing. Social implications By using the proposed method, it can be fulfilled that generation characteristic of automotive alternators can be evaluated without using the control simulation or pre-conducted analysis to decide the switch timing. Originality/value In the proposed methods, the definition of diode module differs from that of a conventional coupled analysis.

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Section: Introductionmentioning

confidence: 99%

Novel coupled analysis methods of automotive alternators considering synchronous rectification circuit

Hidaka

2021

COMPEL

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Improved performance of integrated generator systems with claw pole alternator for aircraft applications

Arumugam

Logamani

Karuppiah

2017

Energy

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3-D Numerical Modeling of Claw-Pole Alternators With its Electrical Environment

et al. 2020

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This paper describes a methodology for modelling a six-phase claw-pole alternator with its electrical environment. Magnetic nonlinearities, eddy currents and rectifiers are taken into account. To solve magnetodynamic problems, we use the modified magnetic vector potential formulation. The complex structure of the machine requires a 3D finite element analysis. To limit the mesh size, we introduced a refinement strategy based on the calculation of the time derivative of magnetic vector potential, solution of the magnetostatic case. In addition, we propose to reduce the transient state by improving the initial solution from the solution of a magnetostatic problem. These different numerical techniques reduce drastically the computational time and memory resources. To validate the proposed approach, some results are compared with experimental ones.

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3D numerical modeling with FEM operation under load on the alternator claw poles

Cited by 3 publications

References 1 publication

Novel coupled analysis methods of automotive alternators considering synchronous rectification circuit

Novel coupled analysis methods of automotive alternators considering synchronous rectification circuit

Improved performance of integrated generator systems with claw pole alternator for aircraft applications

3-D Numerical Modeling of Claw-Pole Alternators With its Electrical Environment

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