Asymptotic waveform evaluation for S-domain solution of electromagnetic devices

Author

Bracken, J. Eric ; Cendes, Zoltan J.

Author_Institution

Ansoft Corp., Pittsburgh, PA, USA

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

3232

Lastpage

3235

Abstract

This paper presents an efficient method for the computation of electromagnetic transients. We employ fast frequency-sweep methods, such as Asymptotic Waveform Evaluation (AWE) or the Lanczos-based ALPS procedure, to determine the frequency response of an electromagnetic system over a broad frequency band. Using a rational function fitting procedure, we compute a reduced-order model of the system´s port parameters. Next, an equivalent circuit model is formed. A circuit simulator such as SPICE can then be used to compute the transient response of the system in conjunction with nonlinear driver and load devices. We provide examples to demonstrate the accuracy and efficiency of this technique

Keywords

electrical engineering computing; electromagnetic devices; equivalent circuits; frequency response; numerical analysis; reduced order systems; transfer functions; transient analysis; transient response; Lanczos-based ALPS procedure; S-domain solution; SPICE; asymptotic waveform evaluation; circuit simulator; electromagnetic devices; electromagnetic transients; equivalent circuit model; fast frequency-sweep methods; frequency response; nonlinear driver devices; nonlinear load devices; port parameters; rational function fitting procedure; reduced-order model; transient response; Circuit simulation; Computational modeling; Electromagnetic analysis; Electromagnetic devices; Electromagnetic fields; Equivalent circuits; Frequency; Maxwell equations; Performance analysis; Reduced order systems;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717758

Filename

717758