Efficiency improvement in Uninterruptible Power Supply (UPS)
type: Dataset
description: The Uninterruptible Power Supplies (UPS) are used to supply such critical load with a high level of quality and continuity. The topology based on two consecutive converters providing permanently the whole power leading to made the efficiency a key point of the UPS. To improve the efficiency of the semi-conductors part, three ways have been studied in this thesis: The semi-conductor area, the topology of the converter and the switching mode. The filter losses have been taken into account based on the state of the art. The estimation of the efficiency, based on the datasheet from manufacturers, allow quantifying each way. Some soft-switching multi-level topologies have been developped and patented. Finally, experimentations have been made to asses the relevance of the models, the working of new topologies and the efficiency of the proposed 125 kVA UPS.
identifier: NNT: 2011GRENT022
issued: 2026-05-24T00:41:35.782104
language: fr
modified: 2026-05-24T00:41:35.782109
contact point: Organization
  fn: CCSD
keyword: commutation-douce
keyword: infoeu-reposemanticsdoctoralthesis
keyword: multi-level
keyword: multi-niveaux
keyword: power-converters
keyword: power-electronics
keyword: soft-switching
keyword: spiotherengineering-sciences-physicsother
keyword: structure-de-conversion
keyword: theses
landing page: https://theses.hal.science/tel-00651973

Efficiency improvement in Uninterruptible Power Supply (UPS)
type: Distribution
format: HTML
issued: 2026-05-24T00:41:35.900002
modified: 2026-05-24T00:41:35.741100
access URL: https://theses.hal.science/tel-00651973

test_moissonnage_selune
type: Agent