Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19977
Title: An equivalent parameter extraction method of transient electric circuit and magnetic field coupled problems based on sensitivity computation of system equations
Authors: Ho, SL 
Niu, S 
Fu, WN 
Keywords: Electric circuit
Equivalent parameter
Finite element method
Indirect coupling
Sensitivity
Transient magnetic field
Issue Date: 2011
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2011, v. 47, no. 8, 5721889, p. 2068-2075 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: A method to extract the equivalent parameters of transient electric circuit and magnetic field coupled problem based on sensitivity computation on the system equations is presented. The field equations are derived by using the finite element method. In contrast to traditionally used methods which are based on the physical meanings and physical relationships of the parameters, in this method, the parameters are extracted from the mathematical system equations which include the eddy-current magnetic field equations and internal circuit equations. Its advantage is that it is applicable to complex problems, inside which the reactive energy, iron losses, and copper losses are difficult to be isolated and expressed. The extracted parameters can include the effects of eddy currents, internal circuits, and mechanical motion. It has been applied to indirect coupling between external circuits and transient magnetic field with internally connected circuits.
URI: http://hdl.handle.net/10397/19977
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2011.2121087
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