CUED Publications database

Numerical analysis of the coupled circuit and cooling holes for an electromagnetic shaker

Peng, M-T and Flack, TJ (2005) Numerical analysis of the coupled circuit and cooling holes for an electromagnetic shaker. IEEE Transactions on Magnetics, 41. pp. 47-54. ISSN 0018-9464

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Abstract

This paper presents a time-stepping shaker modeling scheme. The new method improves the accuracy of analysis of armature-position-dependent inductances and force factors, analysis of axial variation of current density in copper plates (short-circuited turns), and analysis of cooling holes in the magnetic circuit. Linear movement modeling allows armature position to be precisely included in the shaker analysis. A more accurate calculation of eddy currents in the coupled circuit is in particular crucial for the shaker analysis in a mid-or high-frequency operation range. Large currents in a shaker, including eddy currents, incur large Joule losses, which in turn require the use of a cooling system to keep temperature at bay. Sizable cooling holes have influence on the saturation state of iron poles, and hence have to be properly taken into account.

Item Type: Article
Uncontrolled Keywords: Cooling holes Coupled circuit Electromagnetic shaker Finite-element
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:03
Last Modified: 30 Nov 2014 21:46
DOI: 10.1109/TMAG.2004.840181