Title:
ELASTIC MATRIX DETERMINATION METHOD OF LAMINATED IRON CORE OF TRANSFORMER AND VIBRATION ANALYSIS METHOD
Document Type and Number:
Japanese Patent JP2021135285
Kind Code:
A
Abstract:
To provide an elasticity matrix determination method of a laminated iron core of a transformer which can optimally determine transverse elasticity coefficients at two faces including a lamination direction of the laminated iron core of the transformer included in an elasticity matrix in a constitution formula, and a vibration analysis method.SOLUTION: In an elasticity matrix determination method of a laminated iron core of a transformer, in a step S3, a vibration responsiveness analysis is performed with respect to a laminated iron core 21 with transverse elasticity coefficients Gyz and Gzx at two faces including a lamination direction as specified values G which are selected from a prescribed range, and frequency spectra of vibration responsiveness functions of the laminated iron core 21 with respect to the specified values G are acquired, in a step S4, a frequency spectrum of the excitation vibration of the laminated iron core 21 is calculated, in a step S5, the coincidence of a frequency spectrum of the noise of the laminated iron core 21 and the frequency spectrum of the excitation vibration of the laminated iron core 21 is acquired, and in a step S6, the steps S3 to S5 are repeated by changing the specified values G within the prescribed range, and the specified value G at which the coincidence becomes the largest is determined.SELECTED DRAWING: Figure 4
Inventors:
NAMIKAWA MISAO
Application Number:
JP2020195506A
Publication Date:
September 13, 2021
Filing Date:
November 25, 2020
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
G01H17/00; G06F30/10; G06F30/20
Domestic Patent References:
| JP2014071689A | 2014-04-21 | |||
| JP2012069620A | 2012-04-05 | |||
| JP2010003154A | 2010-01-07 | |||
| JP2013068517A | 2013-04-18 |
Foreign References:
| WO2019146554A1 | 2019-08-01 | |||
| US20160011040A1 | 2016-01-14 |
Attorney, Agent or Firm:
Hide Tanaka Tetsu
Ichi Hirose
Toru Miyasaka
Tetsuya Mori
Ichi Hirose
Toru Miyasaka
Tetsuya Mori