Collection

Power and UPS

Power distribution, UPS, batteries, protection and redundant supply.

Sources
418
Downloadable PDFs
95
Years
1984–2027

All sources

1–24 / 418

White paperFree to readEditor’s pick

Schneider Electric 2024

The Different Types of UPS Systems

Store the IEC class code (for example VFI-SS-111) and the topology type on every UPS model, and compare models through those fields.

  • Standby and line-interactive units need almost 10 ms to detect a failure and transfer.
Research paperPDF

arXiv preprint (Texas Tech University / PNNL; submitted to Renewable and Sustainable Energy Reviews) 2026

A Critical Review of Grid Integration Challenges and Flexibility Opportunities for Large-Scale Data Centers

Base interconnection studies on staged, updatable facility data rather than a single static MW value; requested peak MW and annual energy alone do not establish integration.

  • Under IEEE 519-2022, voltage-distortion limits at the PCC are the system owner's responsibility and current-distortion limits are the user's; a scalar THD cannot rule out narrow-band resonance.
Research paperPDF

Energies (MDPI AG) 2023

A Review of Flywheel Energy Storage System Technologies

In UPS designs that only need bridging until the generator starts, evaluate a flywheel as a battery alternative, checking that a 15 s-15 min discharge range and a generator start under 10 s are adequate for the duty.

  • Flywheel operating temperature range is -40 to +50 °C, with low environmental requirements and no contamination.
Research paperPDF

Energies (MDPI AG) 2020

A Review of Lithium-Ion Battery Fire Suppression

In Li-ion UPS and BESS areas, set up detection with combined smoke-heat detectors; do not rely on heat detectors alone.

  • In DNV-GL tests, F500, FireIce, PyroCool foam, Stat-X aerosol and sprinklers all extinguished the fires, but the water-based systems cooled better over time.
Research paperPDF

Electronics (MDPI AG) 2025

A Systematic Review of Energy Efficiency Metrics for Optimizing Cloud Data Center Operations and Management

In efficiency reporting do not make PUE the only metric; knowing its weaknesses (manipulation, optimal-condition reporting, ignoring IT utilisation), complement it with WUE, CUE and IT-side metrics (SPUE, PpW, ITEE).

  • Google reported a 2023 fleet-average annual PUE of 1.10 against an industry average of 1.58; Microsoft reports PUE and WUE together.

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