Hajime Igarashi
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Journal Articles

Two-dimensional steady-state thermal analytical model of permanent magnet linear motor in Cartesian coordinates

Yunlu Du, Yunkai Huang, Baocheng Guo, Zakarya Djelloul-Khedda, Frédéric Dubas, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2025) 44 (1): 109–126.
https://doi.org/10.1108/COMPEL-11-2024-0452
Published: 28 January 2025
View article titled, Two-dimensional steady-state thermal analytical model of permanent magnet linear motor in Cartesian coordinates
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Journal Articles

Multi-objective optimization and uncertainty quantification for inductors based on neural network

Xiaohan Kong, Shuli Yin, Yunyi Gong, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2024) 43 (4): 890–903.
https://doi.org/10.1108/COMPEL-11-2023-0552
Published: 30 April 2024
View article titled, Multi-objective optimization and uncertainty quantification for inductors based on neural network
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Journal Articles

Deep learning-based surrogate model for fast multi-material topology optimization of IPM motor

Hayaho Sato, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2022) 41 (3): 900–914.
https://doi.org/10.1108/COMPEL-03-2021-0086
Published: 03 November 2021
View article titled, Deep learning-based surrogate model for fast multi-material topology optimization of IPM motor
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Journal Articles

Sensorless metal object detection for wireless power transfer using machine learning

Yunyi Gong, Yoshitsugu Otomo, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2022) 41 (3): 807–823.
https://doi.org/10.1108/COMPEL-03-2021-0069
Published: 01 November 2021
View article titled, Sensorless metal object detection for wireless power transfer using machine learning
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Journal Articles

Topology optimization of magnetic cores for WPT using the geometry projection method

Yoshitsugu Otomo, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2022) 41 (3): 889–899.
https://doi.org/10.1108/COMPEL-02-2021-0064
Published: 25 October 2021
View article titled, Topology optimization of magnetic cores for WPT using the geometry projection method
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Journal Articles

Homogenization of multi-turn coil with elliptic cross-section using complex permeability

Shogo Fujita, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2019) 38 (3): 999–1008.
https://doi.org/10.1108/COMPEL-09-2018-0356
Published: 10 May 2019
View article titled, Homogenization of multi-turn coil with elliptic cross-section using complex permeability
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Journal Articles

A passive SPICE model for rectennas

Polyanna Mara Pereira, Felipe Campelo, Takuya Mori, Hajime Igarashi, Ricardo Adriano
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2018) 37 (6): 1905–1917.
https://doi.org/10.1108/COMPEL-04-2017-0163
Published: 21 August 2018
View article titled, A passive SPICE model for rectennas
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Journal Articles

Direct synthesis of equivalent circuits from reduced FE models using proper orthogonal decomposition

Toshihito Shimotani, Yuki Sato, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2016) 35 (6): 2035–2044.
https://doi.org/10.1108/COMPEL-03-2016-0088
Published: 07 November 2016
View article titled, Direct synthesis of equivalent circuits from reduced FE models using proper orthogonal decomposition
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Journal Articles

Model order reduction for moving objects: fast simulation of vibration energy harvesters

Takahiro Sato, Yuki Sato, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2015) 34 (5): 1623–1636.
https://doi.org/10.1108/COMPEL-02-2015-0043
Published: 07 September 2015
View article titled, Model order reduction for moving objects: fast simulation of vibration energy harvesters
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Journal Articles

Stochastic topology optimization based on level-set method

Yuki Hidaka, Takahiro Sato, Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2014) 33 (6): 1904–1919.
https://doi.org/10.1108/COMPEL-11-2013-0375
Published: 28 October 2014
View article titled, Stochastic topology optimization based on level-set method
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Journal Articles

A modified immune algorithm with spatial filtering for multiobjective topology optimisation of electromagnetic devices

Takahiro Sato, Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2014) 33 (3): 821–833.
https://doi.org/10.1108/COMPEL-09-2012-0174
Published: 29 April 2014
View article titled, A modified immune algorithm with spatial filtering for multiobjective topology optimisation of electromagnetic devices
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Journal Articles

Accuracy evaluation of three-dimensional FE analysis based on nonconforming voxel element

Takahiro Sato, Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2013) 33 (1-2): 181–190.
https://doi.org/10.1108/COMPEL-10-2012-0232
Published: 20 December 2013
View article titled, Accuracy evaluation of three-dimensional FE analysis based on nonconforming voxel element
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Journal Articles

A robust optimization based on adjoint variable method

Takayuki Maruyama, Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2010) 29 (6): 1524–1532.
https://doi.org/10.1108/03321641011078599
Published: 16 November 2010
View article titled, A robust optimization based on adjoint variable method
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Journal Articles

Investigation of the characteristics of conformal microstrip antennas

Ralf T. Jacobs, Arnulf Kost, Hajime Igarashi, Alan J. Sangster
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2008) 27 (1): 110–121.
https://doi.org/10.1108/03321640810836681
Published: 04 January 2008
View article titled, Investigation of the characteristics of conformal microstrip antennas
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Journal Articles

3D topology optimization using an immune algorithm

Felipe Campelo, Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2007) 26 (3): 677–688.
https://doi.org/10.1108/03321640710751145
Published: 19 June 2007
View article titled, 3D topology optimization using an immune algorithm
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Journal Articles

An efficient parallel PCG method for eddy current analysis

Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2007) 26 (3): 888–898.
https://doi.org/10.1108/03321640710751299
Published: 19 June 2007
View article titled, An efficient parallel PCG method for eddy current analysis
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Journal Articles

On robustness of edge‐based FE analysis using algebraic multigrid method

Kota Watanabe, Hajime Igarashi
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (2005) 24 (2): 408–417.
https://doi.org/10.1108/03321640510586042
Published: 01 June 2005
View article titled, On robustness of edge‐based FE analysis using algebraic multigrid method
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Journal Articles

Effective reluctivity calculation versus time step calculation of magnetic shielding with ferromagnetic material

Dieter Lederer, Hajime Igarashi, Arnulf Kost, Toshihisa Honma
Journal: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
COMPEL (1999) 18 (3): 410–421.
https://doi.org/10.1108/03321649910274973
Published: 01 September 1999
View article titled, Effective reluctivity calculation versus time step calculation of magnetic shielding with ferromagnetic material
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