# Numerical and Theoretical Analyses of Losses in Armature Windings of Motors for Liquid Hydrogen Pumps

https://mdr.nims.go.jp/datasets/5c483e65-215f-4303-98b9-913f8d209d57

## Files

- [Numerical and Theoretical Analyses of Losses in Armature Windings of Motors for Liquid Hydrogen Pumps.pdf](https://mdr.nims.go.jp/filesets/fea392e5-ddf6-4c70-a58d-622218c32644/download) ([Detail](https://mdr.nims.go.jp/filesets/fea392e5-ddf6-4c70-a58d-622218c32644.md))

## Id

5c483e65-215f-4303-98b9-913f8d209d57

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-01-05T00:08:17.727687Z

## Updated at

2026-01-06T02:18:28.467199Z

## Published at

2026-01-06T03:19:34.027926Z

## Doi



## First published url

https://doi.org/10.1007/s10948-025-07069-5

## Date published

2025-10-30

## Recorded date published

2025-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Numerical and Theoretical Analyses of Losses in Armature Windings of Motors
    for Liquid Hydrogen Pumps
  title_type: original
  lang: en

## Description

- description: In order to develop submerged pumps to transfer liquid hydrogen, high
    temperature superconducting (HTS) motors to drive them as one of key components
    are a promising candidate with low electromagnetic loss and large specific power
    density per unit mass. However, since armature windings wound using HTS wires
    have a couple of problems such as three-phase unbalanced currents and frequency
    limitations, HTS wires are used only for rotor windings of the motors and metallic
    cables have to be applied to their armature windings. Therefore, numerical analyses
    to evaluate loss properties in multi-strand metal twisted cables for armature
    windings of HTS motors cooled at liquid hydrogen temperature are carried out by
    means of a two-dimensional finite element method. On the basis of a clarified
    physical mechanism of losses generated in the windings arranged within a slot
    of armature iron core, the obtained numerical results are also reproduced with
    theoretical expressions of the Joule loss for an alternating transport current
    and the eddy-current loss for an externally applied AC magnetic field. The influences
    of losses on the frequency and number of strands in metal twisted cables are investigated
    quantitatively.
  description_type: abstract
  lang: und

## Creator

- name: Kazuhiro Kajikawa
  role: author
- name: Yuto Mametsuka
  role: author
- name: Masahiro Furukakoi
  role: author
- name: Taketsune Nakamura
  role: author
- name: Akihiro Kikuchi
  role: author
  orcid: https://orcid.org/0000-0002-5044-7156
- name: Tomohito Miura
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Armature winding
  schema: not_defined
- subject: Eddy current loss
  schema: not_defined
- subject: Joule loss
  schema: not_defined
- subject: Finite element method
  schema: not_defined
- subject: Theory
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Superconductivity and Novel Magnetism
  issn: '15571939'
  volume: '38'
  issue: '6'
  article_number: '229'

## Conference



## Related item



## Funding

- identifier: JPNP23004
  funder_name: New Energy and Industrial Technology Development Organization

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



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## Energy level/transition state



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## Fileset

- id: fea392e5-ddf6-4c70-a58d-622218c32644
  filename: Numerical and Theoretical Analyses of Losses in Armature Windings of Motors
    for Liquid Hydrogen Pumps.pdf
  content_type: application/pdf
  size: 1718138
  md5: 9ea8c780ad2d630b4f3e06b1976a2f25

## Thumbnail

fileset_id: fea392e5-ddf6-4c70-a58d-622218c32644
filename: Numerical and Theoretical Analyses of Losses in Armature Windings of Motors
  for Liquid Hydrogen Pumps.pdf