Earthquake-Resistant Technology for Uninterruptible Power Systems

摘要

Uninterruptible power systems (UPSs) need to have adequate earthquake resistance because they are used as backup power during blackouts at data centers, financial institutions, hospitals and other places requiring a stable supply of power. After the Great East Japan Earthquake, the guidelines on the earthquake resistance of transformers have been established. Fuji Electric thus tested the earthquake resistance of its UPSs using seismic waves, for which the acceleration response of the building was considered, and confirmed their stable operation. On the basis of the analysis on the deformation of transformers by the finite element method, we took anti-sway measures and revised the housing frame of the transformer panel to improve earthquake resistance.