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A modified sphere decoder for online adjustment of the switching frequency

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE
Pages213-218
Number of pages6
ISBN (Electronic)978-1-7281-4878-6
ISBN (Print)978-1-7281-4879-3
DOIs
Publication statusPublished - Oct 2019
Publication typeA4 Article in a conference publication
EventAnnual Conference of the IEEE Industrial Electronics Society -
Duration: 1 Jan 1900 → …

Publication series

NameAnnual Conference of the IEEE Industrial Electronics Society
ISSN (Print)1553-572X
ISSN (Electronic)2577-1647

Conference

ConferenceAnnual Conference of the IEEE Industrial Electronics Society
Period1/01/00 → …

Abstract

In this paper we present a modified sphere decoder that can adjust the switching frequency in real time. To achieve this, the underlying integer least-squares (ILS) problem is reformulated and the lattice generator matrix is modified. By doing so, computational demanding operations required to be performed in real time are avoided altogether, rendering the proposed method computationally feasible. Moreover, the optimization process is kept computationally modest by appropriately manipulating the geometry of the ILS problem. The effectiveness of the introduced method is tested with a medium voltage variable speed drive system consisting of a three-level neutral point clamped (NPC) inverter and an induction machine.

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