Naslov
Transformer capacitance matrix computation using 3D boundary element method and adaptive cross approximation

Autori
Drandić, Ana ; Trkulja, Bojan

Izvornik
International journal of numerical modelling- electronic networks devices and fields (0894-3370) EMF18 SPECIAL ISSUE (2019); 1-9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
adaptive cross approximation, boundary element methods, electric field, integral equations

Sažetak
In this paper, a solver based on a 3D boundary element method (BEM) is pre-sented and verified on a transformer geometry. Using a triangular surface meshof a winding, the unknown charge distribution is found from known potentialsof surfaces using the integral equation approach and point matching. Thecapacitance matrix is calculated from known potentials in nodes of the system.The application of BEM and point‐ matching results in a fully populated systemmatrix. Therefore, a matrix reduction technique adaptive cross approximation(ACA) is employed in order to reduce the CPU time and memory require-ments. Both the accuracy of the direct and the accuracy of the ACA approachare benchmarked against the results obtained using the professional finiteelement method (FEM)‐ based software.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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