Ups-Aditya n Rajat

8/8/2019 Ups-Aditya n Rajat

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INTEGRATEDINTEGRATED TERMTERM PROJECTPROJECT

SUBMITTED BYSUBMITTED BY

RAJAT NANDIRAJAT NANDIADITYA KUMARADITYA KUMAR


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UNINTERRUPTIBLEPOWER SUPPLY


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INTRODUCTIONINTRODUCTION

AnAn UPSUPS isis devicedevice whichwhich maintainsmaintains aa continuouscontinuous

supplysupply of of electricelectric powerpower toto connectedconnected

equipmentsequipments byby supplyingsupplying powerpower fromfrom aaseparateseparate sourcesource whenwhen utilityutility powerpower isis notnot

availableavailable..

ItIt providesprovides uninterrupteduninterrupted powerpower toto anan

equipmentequipment forfor 11 toto 2020 minutesminutes..

AlsoAlso knownknown asas emergencyemergency powerpower supplysupply..


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HISTORYHISTORY

The first UPS were of rotary design appearedThe first UPS were of rotary design appeared

during 1950s.during 1950s.

The modern UPS was patented by Hanan Zak &The modern UPS was patented by Hanan Zak &Alexander Zak in the mid nineties.Alexander Zak in the mid nineties.

Previously it was only used in defensePreviously it was only used in defense

equipments such as RADARS.equipments such as RADARS.

Earlier they were very expensive.Earlier they were very expensive.


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NEED FOR UPSNEED FOR UPS

Industry demands very sensitive power qualityIndustry demands very sensitive power quality

distribution.distribution.

Even small disturbances in power supply canEven small disturbances in power supply cancause serious problems such as corruption orcause serious problems such as corruption or

loss of data.loss of data.

Infrequent electricity can manifest into damagedInfrequent electricity can manifest into damaged

computer hardware as well as sporadic andcomputer hardware as well as sporadic and

unexplainable errors occurring on the software.unexplainable errors occurring on the software.


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Features of ideal UPSFeatures of ideal UPS

High efficiencyHigh efficiency

Low maintenanceLow maintenance

Low cost, weight & sizeLow cost, weight & size LowLowEMIEMI and acoustic noise.and acoustic noise.

Zero switching time from normal to backup.Zero switching time from normal to backup.

Electric isolation of the battery output and inputElectric isolation of the battery output and input


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Common power problemsCommon power problems

Power failurePower failure

Voltage sagVoltage sag

Voltage spikeVoltage spike

Under voltage( brown out)Under voltage( brown out)

Over voltageOver voltage

Line noiseLine noise

F

requency variationF

requency variation Switching transientSwitching transient

Harmonic distortionHarmonic distortion


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FUNCTIONS

Absorb relatively small power surges.

Smooth out noisy power sources.

Continue to provide power to

equipment during line sags.

Provide power for sometime after ablack-out has occurred.


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COMPONENTSCOMPONENTS

THE BATTERYTHE BATTERY: UPS needs lots of battery: UPS needs lots of battery

capacity. They use lead acid battery.capacity. They use lead acid battery.

POWER SUPPLYPOWER SUPPLY: UPS needs this to charge: UPS needs this to charge

its battery and run the inverter when the mainsits battery and run the inverter when the mains

havent failed.havent failed.

THE INVERTER:THE INVERTER: It is a device whichIt is a device which

converts DC to AC. UPS uses inverter to supplyconverts DC to AC. UPS uses inverter to supply

AC ower from the batteries when main owerAC ower from the batteries when main ower


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COMPONENTS contd.COMPONENTS contd.

THE CAPACITOR:THE CAPACITOR:

ItIt isis aa passivepassive electricalelectrical

componentcomponent thatthat cancan storestore energyenergy inin thethe electricelectric

fieldfield betweenbetween aa pairpair ofof conductorconductor.. UPSUPS cancan bebe

equippedequipped withwith maintenancemaintenance freefree capacitorscapacitors toto

extendextend serviceservice lifelife


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WORKING

STEPS:

Accepts AC input.

Rectifies AC to DC for passing

through the battery.

Then inverting DC back to AC forpowering the protected equipment

during power failure.


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WORKING contd.


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TYPES OF UPSTYPES OF UPS

1. Static UPS1. Static UPS::

OffOff--lineline

LineLine--interactiveinteractive OnlineOnline

2.2. Rotary UPSRotary UPS

3.3.Hybrid UPSHybrid UPS


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APPLICATIONAPPLICATION

In industries UPS provide redundantIn industries UPS provide redundantpower protection.power protection.

UPS is usedUPS is used

1.1. in defense equipmentsin defense equipments

2.2. In the hospitalsIn the hospitals

3.3. In air traffic control centersIn air traffic control centers

4.4. In research institutesIn research institutes

5.5. in nuclear power plantsin nuclear power plants


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POWER CONDITIONERSPOWER CONDITIONERS

OTH

ER TH

AN UPSOTH

ER TH

AN UPS

Isolation transformerIsolation transformer

AC voltage refulatorsAC voltage refulators Dual feeder with static transferDual feeder with static transfer

switchesswitches

Motor generator setsMotor generator sets


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Thank you!Thank you!

Ups-Aditya n Rajat

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