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  • Proposal of a New High Step-Up Converter for UPS Applications
    In commercial online UPS systems ( 500VA to 2kVA ), the battery voltage has to be stepped up from 12Vdc or 24Vdc to 200Vdc or 400Vdc, so that an inverter can be employed (127Vac or 22OVac).
  • Integration of Green and Renewable Energy in Electric Power Systems
    … respectively Load 1: Pload1 = 480 kW/Qload1 = 360 kVar (p.f = 0.8) Load 2: Pload2 = 480 kW/Qload2 = 360 kVar (p.f = 0.8) Case 2: Power ratings of UPS unit 1 and 2 : 600 k VA , 500 kVA , respectively Load 1: Pload1 …
  • An Inrush Current Reduction Technique for Multiple Inverter-Fed Transformers
    … implemented as in Fig. 1, and the circuit parameters are as follows: 1) UPS inverter: output voltage of … … and Cf = 10 μF; 2 ) transformer 1: 3.0 kVA , 220 V/220 V (Δ/Y connection); 3) transformer 2: 500 VA , 220 V/220 V (Δ/Y …
  • Analysis and design of a repetitive predictive-PID controller for PWM inverters
    Due to widespread use of the microcomputer-based systems in several applications, the demand of single-phase unintermptible power systems to supply critical loads at low power ( 500 VA - 5 kVA ) is increasing. On the other hand, with the fast development of the low cost microcontrollers, engineers and researchers have been using more sophisticated digital control techniques to improve the performance of the unintermptible power supplies ( UPS ) [11-[ 2 ].
  • http://calhoun.nps.edu/public/bitstream/handle/10945/4314/02Dec_Beran.pdf?sequence=1
    Equipment User Manual, FERRUPS FE/QFE 500 VA – 18 kVA UPS Technical Manual, Best Power Technology, Inc., Necedah, Wisconsin, 1996. … Grounding, Bonding, and Shielding for Electronic Equipment and Facilities, Volume 1 (Basic Theory) and Volume 2 (Applications).
  • Shopping In UPSs - Big Bruin
    APC BR1300G Back-UPS RS BR1300G 1300 VA Tower UPS (1300 VA /780 W - 120 V AC - 4 Minute - Tower - 4 Minute - 5 x NEMA 5-15R - , 5 x NEMA 5-15R) 1.30 kVA /780 WTower 0.07 Hour, 0.25 … Tripp Lite OMNIVS1000 1000 VA/ 500 W - Tower - 2 x NEMA 5-15R - , 6 x NEMA 5-15R - Surge Line interactive UPS system with eight outlets offers voltage regulation, surge suppression and long-lasting battery support for personal computers, Internet-working equipment …
  • http://dspace.mit.edu/bitstream/handle/1721.1/80689/857769456-MIT.pdf?sequence=2
    … Phoenixtec in the mainland Chinese market (Santak Electronic (Shenzhen) Co. Ltd., 2008); Table 2 -1 lists the … TG seies ( 500VA , IkVA) Stand-by UPS M series (500 kVA .
  • Shopping In UPSs - Big Bruin
    APC BR1300G - Back-UPS RS BR1300G 1300 VA Tower UPS (1300 VA /780 W - 120 V AC - 4 Minute - Tower - 4 Minute - 5 x NEMA 5-15R - , 5 x NEMA 5-15R) 1.30 kVA /780 WTower 0.07 Hour, 0.25 … • Tripp Lite SmartPro 500 VA Rack/Tower UPS Requires only one rack space (1U) in a 2 or 4 post rack, with included accessories for …
  • Robust Model-Following Control of Parallel UPS Single-Phase Inverters
    DESCRIPTION AND MODELLING OF THE MODULAR UPS SYSTEM BASED ON PARALLEL INVERTERS The 1 kVA parallel inverter system in Fig. 1 consists of N single-phase full-bridge inverters … - Input voltage: Vi=400 V 10% - RMS output voltage: Vo-RMS=220 V 1% - Output frequency (fundamental): f=50 Hz 1 Hz - Nominal apparent power of each inverter: Smod= 500 VA . - Number of connected inverters: N=1 to 2 .
  • Revolution within UPS systems
    La gmme "DATAPOWER" va de 5OOW B 2 MW et s t produite par Silcon. With the newest inventionsit has been possibleto make a generation of on-line UPS 'S without some … … the newest member of the family achive an efficency of %% for a 3 kVA UPS system. The DATAPOWER'Sare manufacturedby Silcon,and are avaliable from 500 W to 2Mw.