NDLI: Analytical method to compute bridge stresses in V-shape IPMs

Content Provider	IET Digital Library
Author	Lin, Ruiyang Sudhoff, Scott D. Krousgrill, Charles
Abstract	V-shape interior permanent-magnet machines (IPMs) have been widely utilised in the industry due to their high-power density, high efficiency, and low manufacturing cost. There has been growing interest in applying multi-objective optimisation to the design of electric machines. In the context of V-shape IPM designs, it is important to include stress analysis in the optimisation design analysis as the steel bridges in the IPM rotor are structural weak points, where high stresses develop. However, traditional finite element analysis (FEA) that is normally used to compute bridge stresses becomes cumbersome due to its high computational cost. In this study, a computationally efficient analytical method is proposed to compute the mechanical stresses developed within the steel bridges in a V-shape IPM. The proposed method is shown to yield accurate predictions compared with FEA while reducing computational cost. A design study is conducted that demonstrates that the machine performance can be improved by incorporating the proposed structural analysis in a multi-objective optimisation-based-design environment.
Starting Page	938
Ending Page	945
Page Count	8
ISSN	17518660
Volume Number	12
e-ISSN	17518679
Issue Number	Issue 7, Aug (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/12/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2018.0053
Journal	IET Electric Power Applications
Publisher Date	2018-03-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Bridge Stresses Bridges (structures) Computationally Efficient Analytical Method D.C. Machines Design Study Electric Machines FEA Finite Element Analysis High Computational Cost High-power Density IPM Rotor Low Manufacturing Cost Machine Performance Multiobjective Optimisation-based-design Environment Optimisation Optimisation Design Analysis Optimisation Technique Permanent Magnet Machine Rotors Steel Bridges Stress Analysis Structural Analysis Structural Weak Point V-shape Interior Permanent-magnet Machine V-shape IPM Designs
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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