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Design and Construction of UPS

UPS (Uninterrupted Power Supply) is used for power supply at the time of power failure for various types of loads as in personal computer. At the time when main supply cuts-off, UPS is used to supply power to the load for certain time. The main components used for the UPS are single-phase half bridge inverter, which uses combination of MOSFETs and diodes for the conversion of DC supply to AC supply. Other components used are full bridge rectifier, battery and filter. Full bridge rectifier converts AC supply into DC. The battery gives dc supply to the inverter for converting dc supply into ac. The snubber filter is used for the elimination of unwanted harmonics. The unwanted harmonics free AC supply will be given to the load.


  •     Udaya Adhikari
  •     Sijan Sthapit
 

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