NDLI: Calculation of rotor losses in PM machines with retaining sleeves using transfer matrices

Content Provider	IET Digital Library
Author	Anglada, Jaime Renedo Sharkh, Suleiman M. Yuratich, Michael A.
Abstract	Accurate calculation of rotor losses in permanent magnet (PM) synchronous machines can be critical because these losses tend to be very small relative to others in the machine. Numerical methods, such as finite element analysis (FEA), can now provide accurate estimates of these losses, but they, especially 3D-FEA, can be time consuming. Analytical methods therefore remain very useful as quick tools for estimating losses at the early design stages. This study presents a new improved analytical method for the calculations of rotor eddy current losses in PM machines using a reformulation of the current sheet model into transfer matrices to solve Helmholtz's diffusion equation. Such methodology reduces the complexity of the problem significantly, particularly in machines with retaining sleeves, and simplifies the numerical evaluation of the resulting equations. A high-speed PM machine with a retaining sleeve is presented as a case study. The analytical results are verified using FEA.
Starting Page	1150
Ending Page	1157
Page Count	8
ISSN	17518660
Volume Number	12
e-ISSN	17518679
Issue Number	Issue 8, Sep (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/12/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2017.0863
Journal	IET Electric Power Applications
Publisher Date	2018-05-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Current Sheet Model Differential Equation (numerical Analysis) Eddy Current Loss Finite Element Analysis Helmholtz Diffusion Equation Helmholtz Equation Linear Algebra Matrix Algebra Numerical Analysis Numerical Method Permanent Magnet Synchronous Machine PM Synchronous Machine Retaining Sleeve Rotor Eddy Current Loss Calculation Rotors Synchronous Machine Transfer Matrix
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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