Nonlinear transient finite element field computation for electrical machines and devices

Journal Article · Sun May 01 04:00:00 EDT 1983 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1983.318049· OSTI ID:5780691

Tandon, S C; Armor, A F; Chari, M V.K.

This paper describes the procedure for analyzing nonlinear transient electromagnetic phenomena in electrical machines and devices with the finite element method. Two time integration methods are used which are based on (1) an implicit forward difference scheme and (2) the Crank-Nicholson method. The quasilinearization of the nonlinear matrix equation is handled by a simple chord iteration method in the former and the Newton-Raphson scheme in the latter. The associated variational expressions for the time-dependent diffusion equation are obtained in terms of energy-related functionals. The paper includes illustrative examples of application of the methods to one-and two-dimensional time-dependent eddy current problems in a conducting slab, a rotating machine under asynchronous operation, and a threephase bus-bar enclosure.

• Research Organization: General Electric Co., Schenectady, NY
• OSTI ID: 5780691
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. 102:5; ISSN IEPSA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
CURRENTS
EDDY CURRENTS
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC FIELDS
EQUIPMENT
FINITE ELEMENT METHOD
ITERATIVE METHODS
MACHINERY
MATRIX ELEMENTS
MOTORS
NEWTON METHOD
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
QUASILINEAR PROBLEMS
ROTATING GENERATORS
TRANSIENTS