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Unformatted text preview: ”, 1998 ANSYS
Conference Proceedings, Vol. 2, ANSYS, Inc., Canonsburg, PA, 1998, pp. 299–302. Analysis Type(s): Nonlinear Magnetic Static Analysis (ANTYPE = 0) Element Type(s): 3-D 20-Node Magnetic Solid Elements (SOLID117) Input Listing: vm221.dat Figure 221.1 Representative Finite Element Model Test Case
A transformer with a nonlinear iron core is wound with two separate coils. Coil 1 is excited by a current of 0.2 A,
while coil 2 is excited by a small current of 0.025 A. Calculate the self-inductance of both coil 1 and coil 2, and
also the mutual inductance between the two coils.
B = Bs H
BS = 2T andHS = 100A / m Geometric Properties
X = X1 = X2 = Y = Z = 0.015m
N1 = 10 (number of turns in coil 1)
N2 = 20 (number of turns in coil 2) Loading
I1 = 0.2A (applied current in
I2 = 0.025A (applied current in
coil 2) Analysis Assumptions and Modeling Notes
In this problem the LMATRIX macro is used to solve the coil inductance about an operating point (I1, I2). The
finite element representation is modeled by three blocks, coi...
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