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Article Dans Une Revue IEEE Transactions on Power Electronics Année : 2012

Battery/Supercapacitors Combination in Uninterruptible Power Supply (UPS)

Résumé

This study presents a study of the reduction in battery stresses by using supercapacitors (SCs) in a 500-kVA rated UPS. We aim at investigating the optimal supercapacitors-battery combination versus the SCs cost. This investigation is threefold; first, supercapacitors and battery models developed using MATLAB/Simulink are presented and validated. Second, the architecture and the simulation of the designed system that combines the SCs and the battery are shown. The supercapacitors are used as high-power storage devices to smooth the peak power applied to the battery during backup time and to deliver full power during short grid outages. By charging the SCs through the battery at a suitable rate, all impulse power demands would be satisfied by the supercapacitors. Third, extensive simulations are carried out to determine the gain in battery RMS current, the gain in energy losses, the energy efficiency and the elimination rate of surge load power. These four performance parameters are determined by simulation and then analyzed. The influence of the SCs recharge on the performance indicators is highlighted. A thorough analysis involving optimal study proposes to draw the optimal SCs number and filter constant from the variation of the aforementioned parameters versus the cost of the SCs.
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Dates et versions

hal-00818704 , version 1 (04-01-2019)

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Amine Lahyani, Pascal Venet, Abdessattar Guermazi, Alaeddine Troudi. Battery/Supercapacitors Combination in Uninterruptible Power Supply (UPS). IEEE Transactions on Power Electronics, 2012, 28 (4), pp.1509 - 1522. ⟨10.1109/TPEL.2012.2210736⟩. ⟨hal-00818704⟩
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