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Multirate PWM balance method for the efficient field-circuit coupled simulation of power converters

Pels, Andreas and De Gersem, Herbert and Sabariego, Ruth V. and Schöps, Sebastian (2019):
Multirate PWM balance method for the efficient field-circuit coupled simulation of power converters.
In: Journal of Mathematics in Industry, 9, (1), Springer Open, e-ISSN 2190-5983, DOI: 10.25534/tuprints-00009671,
[Online-Edition: https://tuprints.ulb.tu-darmstadt.de/9671],
[Article]

Abstract

The field-circuit coupled simulation of switch-mode power converters with conventional time discretization is computationally expensive since very small time steps are needed to appropriately account for steep transients occurring inside the converter, not only for the degrees of freedom (DOFs) in the circuit, but also for the large number of DOFs in the field model part. An efficient simulation technique for converters with idealized switches is obtained using multirate partial differential equations, which allow for a natural separation into components of different time scales. This paper introduces a set of new PWM eigenfunctions which decouple the systems of equations and thus yield an efficient simulation of the field-circuit coupled problem. The resulting method is called the multirate PWM balance method.

Item Type: Article
Erschienen: 2019
Creators: Pels, Andreas and De Gersem, Herbert and Sabariego, Ruth V. and Schöps, Sebastian
Title: Multirate PWM balance method for the efficient field-circuit coupled simulation of power converters
Language: English
Abstract:

The field-circuit coupled simulation of switch-mode power converters with conventional time discretization is computationally expensive since very small time steps are needed to appropriately account for steep transients occurring inside the converter, not only for the degrees of freedom (DOFs) in the circuit, but also for the large number of DOFs in the field model part. An efficient simulation technique for converters with idealized switches is obtained using multirate partial differential equations, which allow for a natural separation into components of different time scales. This paper introduces a set of new PWM eigenfunctions which decouple the systems of equations and thus yield an efficient simulation of the field-circuit coupled problem. The resulting method is called the multirate PWM balance method.

Journal or Publication Title: Journal of Mathematics in Industry
Number: 1
Publisher: Springer Open
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields
Date Deposited: 15 Dec 2019 20:55
DOI: 10.25534/tuprints-00009671
Official URL: https://tuprints.ulb.tu-darmstadt.de/9671
URN: urn:nbn:de:tuda-tuprints-96719
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