TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

A modified sphere decoder for online adjustment of the switching frequency

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
KustantajaIEEE
Sivut213-218
Sivumäärä6
ISBN (elektroninen)978-1-7281-4878-6
ISBN (painettu)978-1-7281-4879-3
DOI - pysyväislinkit
TilaJulkaistu - lokakuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAnnual Conference of the IEEE Industrial Electronics Society -
Kesto: 1 tammikuuta 1900 → …

Julkaisusarja

NimiAnnual Conference of the IEEE Industrial Electronics Society
ISSN (painettu)1553-572X
ISSN (elektroninen)2577-1647

Conference

ConferenceAnnual Conference of the IEEE Industrial Electronics Society
Ajanjakso1/01/00 → …

Tiivistelmä

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.