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Electromagnetic analysis of a wound rotor synchronous machine using an improved subdomain technique considering finite permeability of the core

Authors
Yu, KyeongTaeBan, HwiRangLee, JuHyeongChoi, JangYoungSung, So YoungPark, JungHyungShin, KyungHun
Issue Date
3월-2024
Publisher
American Institute of Physics
Citation
AIP ADVANCES, v.14, no.3, pp 035042-1 - 035042-6
Journal Title
AIP ADVANCES
Volume
14
Number
3
Start Page
035042-1
End Page
035042-6
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/10419
Abstract
This study proposed an improved analytical method for electromagnetic field analysis of a wound rotor synchronous machine (WRSM) considering the permeability of soft magnetic materials. A simplified analytical model considering the magnetic permeability of each region is presented. The governing equations of each region are derived from Maxwell’s equations and the electromagnetic field theory, and a general solution is derived by using mathematical techniques. The analytical solutions of all domains are derived by calculating the boundary conditions. To validate the proposed analytical method, the radial and circumferential magnetic flux densities are compared with finite element analysis (FEA) results. In addition, electromagnetic performance parameters such as flux linkage, back-electromotive force, and torque are determined using electromagnetic theories. In particular, the magnetic saturation of the soft magnetic material is due to field and armature current, and the superiority of the proposed method is demonstrated by comparing the improved analytical method considering the global saturation of each region with the nonlinear FEA result considering local saturation. The proposed analytical method can be widely used in the initial and optimal design of WRSM because it can consider saturation of the core due to changes in field and armature current.
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친환경해양개발연구본부 > 친환경연료추진연구센터 > Journal Articles

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친환경해양개발연구본부 (친환경연료추진연구센터)
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