Uninterruptable power supply , Electrical Engineering

Uninterruptable power  Supply

An uninterruptible  power supply  provides emergency power when  utility power  is not  available. It  maintains the supply  under  all conditions. A UPS is used to  provide good quality power to the load when power fails,  regulate the load  voltage  when supply  voltage  fluctuates provide constant voltage and constant frequency supply  to the load  suppress the voltage spikes and minimize the  radio frequency interferences and electromagnetic  interferences.

Here  the rectifier  is used  to convert AC into DC. By  using   the batter bank DC can  be stored  to supply continuous power  when main supply  fails.  Inverter is used  to convert DC into  AC. The DC is fed into inverter either from rectifier  when  main supply is ON  or from  battery bank when it is OFF a ripple free AC  can be  obtained by using  filter circuit.

 The general categories of UPS  systems  are on line , off line  and line  interactive.

Posted Date: 4/3/2013 1:10:25 AM | Location : United States







Related Discussions:- Uninterruptable power supply , Assignment Help, Ask Question on Uninterruptable power supply , Get Answer, Expert's Help, Uninterruptable power supply Discussions

Write discussion on Uninterruptable power supply
Your posts are moderated
Related Questions
Question: a) What is the main difference between a latch and a flip flop? b) Draw the logic diagram of an SR-latch using only NAND gates. c) A positive edge triggered

Design a MOD-6 synchronous counter using J-K Flip-Flops.

The covers of electrical machines are made of (A)  Soft magnetic materials.          (B) Hard magnetic materials. (C) Super conductors.                       (D) Semicond


Explain the Johnson Counters? The Johnson counters are a variation of standard ring counters with the inverted output of the last stage fed back to the input of the first stage

Give a short description of soft ferrites . Soft ferrites and their applications: all non- metallic compounds are consisting of ferric oxide and one or two bivalent metal oxid

Explain the NOR GATES - Microprocessor The NOR GATE is an OR gate with the output inverted. Consequently the outputs of a NOR gate would have the opposite states as the outputs o


For sign flag  RP ( Return on Plus ) and RM ( Return on no minus ) Instructions RM returns from the subroutine  to the calling program if sign flag is set  (S=1). The in

An electroscope charged WITHOUT contacting a charged body is charged by: a) Induction b) Conduction c) Convection d) Insulation Ans: An electroscope char