Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Multicell Power Supplies for Improved Energy Efficiency in the Information and Communications Technology Infrastructures

Version 1 : Received: 10 June 2021 / Approved: 14 June 2021 / Online: 14 June 2021 (16:13:34 CEST)
Version 2 : Received: 5 October 2021 / Approved: 6 October 2021 / Online: 6 October 2021 (15:59:04 CEST)

A peer-reviewed article of this Preprint also exists.

Chrysostomou, M.; Christofides, N.; Ioannou, S.; Polycarpou, A. Multicell Power Supplies for Improved Energy Efficiency in the Information and Communications Technology Infrastructures. Energies 2021, 14, 7038. Chrysostomou, M.; Christofides, N.; Ioannou, S.; Polycarpou, A. Multicell Power Supplies for Improved Energy Efficiency in the Information and Communications Technology Infrastructures. Energies 2021, 14, 7038.

Journal reference: Energies 2021, 14, 7038
DOI: 10.3390/en14217038

Abstract

The rapid growth of the Information and Communications Technology (ICT) sector requires additional infrastructure, such as more micro-datacenters and telecom stations, to support the higher internet speeds and low latency requirements of 5G net-works. The increased power requirements of the new ICT technologies necessitate the proposal of new power supplies in an attempt to retain the increase in energy demand and running costs. This work provides an in-depth theoretical analysis on the losses of the individual stages of commercially available PSU and proposes a new multicell PSU, Buck-PFC converter, which offers a higher overall efficiency at varying load levels. The theoretical results are verified using simulation results, via PSIM Thermal Module, and using experimental data. The results indicate that multi-cell structures can improve the overall PSU ef-ficiency by 1.2% at 50% rated power and more than 2.1% at full power. Finally, taking into consideration the economic implica-tions of this study, it is shown that the proposed multicell structure may increase the PSU costs by 10.78% but the payback pe-riod is in the order of just 3.3 years.

Keywords

Micro-Datacenters; information and communications technology (ICT); Efficiency

Subject

ENGINEERING, Electrical & Electronic Engineering

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