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Active power has introduced a new energy storage technology that could replace lead-acid batteries in many applications. The new product, which stores energy in the form of heat and compressed air, will initially be packaged for use with uninterruptible power systems. However, with a few modifications, the technology can also be applied to remote telecommunications sites, for mobile telephone and...
Most of UPS-systems use batteries as back-up energy source. Usually here we find lead-acid batteries or NiCd batteries when its a high ambient temperature. If longer back-up times are required an additional diesel generator will provide the energy. This paper presents the results of some tests, where a fuel cell system generates the back-up energy on a 48 V level
Lithium-ion batteries offer many attributes that are attractive for telecom reserve applications relative to flooded and VRLA technologies. These attributes include much higher energy density per unit weight and per unit volume, no hydrogen outgassing, no thermal runaway mechanism, and much lower steady-stage float current. Lithium-ion batteries are particularly attractive for sites where floor space...
The battery is a vital component in powering wireless networks, and for efficient and safe operation lead-acid batteries are typically kept at controlled operating temperatures (20degC to 25degC). This is a major requirement for base transceiver station (BTS) air conditioners. However, recent developments in electronics allow all active equipment in the BTS to operate reliably at much higher temperatures...
Modeling and simulation of lead acid batteries is of utmost importance in predicting their operation for transportation systems such as hybrid and electric vehicles, for wheelchairs, for battery backup systems such as in UPS for computers and in telecommunication systems. Considerable effort is put into the selection of the appropriate battery model with specific regard to the battery state of charge...
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