scispace - formally typeset
Search or ask a question

Answers from top 9 papers

More filters
Papers (9)Insight
The proposed UPS approach is practical in low-power applications (les 500 W).
The consequences of inrush current can be the reduction of output voltage and tripping of protective devices of the UPS system.
A new power management technique is also proposed for the UPS.
This strategy will allow an effective optimization of the UPS system efficiency.
Experimental results carried out on two paralleled three phase, 40 kVA UPS units based on voltage-source inverters topologies confirm the validity of the theoretical discussion and the practical relevance of the phenomenon.
The proposed technique can be integrated with the existing voltage control and the PWM of the UPS inverter without any additional sensors.
The real power capability is improved compared with that of a conventional online UPS system, and extra loads can be connected to the UPS system during outage.
The proposed UPS system has high operation efficiency and high usage of the converter capacity, and good endurance against voltage transients or EMI noise resulted from the mains.
Results of two parallel-connected 1-kVA UPS inverters show the feasibility of the proposed approach.