NDLI: Core loss estimation of high speed electric machines: An assessment

Content Provider	IEEE Xplore Digital Library
Author	Wooyoung Choi Silong Li Sarlioglu, B.
Copyright Year	2013
Description	Author affiliation: Wisconsin Electr. Machines & Power Electron. Consortium (WEMPEC)≥, Univ. of Wisconsin-Madison, Madison, WI, USA (Wooyoung Choi; Silong Li; Sarlioglu, B.)
Abstract	High speed electric machines have been gaining significant interest over the last several years. This is mainly due to several advantages including increased power density and lower cost. High speed machines can allow for the elimination of gear box to achieve higher reliability and reduced maintenance of the full drive system. One of the challenges with designing high speed machine is accurate estimation of core loss. This paper will introduce both opportunities and challenges of estimating core loss for high speed electric machines. First, this paper will summarize core loss characterization and modeling based on physical and mathematical formulation. The limitation of classical Steinmetz equation is explained and a modified Steinmetz equation with variable coefficients is presented to improve accuracy of the core loss estimation for wide frequency and flux density range. Several contributing factors are also reviewed for estimation of core loss with consideration of arbitrary excitation waveform, flux density distribution, and the skin effect. This paper explains a core loss model for permanent magnet electric machines and discusses the dependency of core loss on machine dimensions as well. Finally, future opportunities are suggested for core loss estimation of high speed machines.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	2691
Ending Page	2696
File Size	995691
Page Count	6
File Format	PDF
ISBN	9781479902248
ISSN	1553572X
DOI	10.1109/IECON.2013.6699556
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Core loss Estimation Mathematical model Equations Stator cores Magnetic cores flux density at high frequency high speed electric machines modified Steinmetz equations
Content Type	Text
Resource Type	Article

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