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Project Members

Hafiz Zahid Rasool 091320- 007

Majid Ali 091320- 079

Majid Rehan Khan 091320- 043

Advisor:Mr. Farhan Iqbal

Co Advisor:Mr.Jawad Ullah

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Design and Implementation of

Intelligent Uninterrupted PowerSupply

(i-

UPS)

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Introduction to i-UPS

Continuous of electricity.

Lower future cost for maintenance/battery replacement.

One battery to maintain.

Lower initial cost of equipment/installation.

Upgradeability and increase system reliability.

Unattended shutdown of multiple servers and operating systems.

Pure Sine Wave(approach)

Fix Output Voltage w.r.t Load Change

Dual Phase Selection

Dual Output voltage in OFF LINE MODE(energy saving)

In modern power systems UPS are very popular among the countrieswhich are facing electricity crises. Due to its portability, it can be usedeasily and UPS is a back-up power system used to prevent power loss ordamage to a computer or other critical piece of electrical equipment andelectronics appliances. Some prominent advantages our iUPS are:

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Project Applications

Auto selection of sources

Auto stop of battery charging

Continuous Temperature sensing of battery

Level(status) of Battery

Automatic load control

Display different status by LCD

Continuity of backup in critical battery

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FP-1

Deliverables(achieved)

Simulation of design and flow chart of our project.

Selection of Micro controller and Programming .

Chose Coding language and software.

Study about Sensors and Electronics Devices.

Understanding of working of UPS.

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FP-2

Deliverables(continue...)Implementation and interfacing of sensors, LCD and

electronic devices with Micro Controller.

Hardware design of i-UPS

Present i-UPS with working condition.

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Implementation Tools:

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Component we useLM 35 (Temperature sensor) PIC16f877A

Relay 12V DC and 220V AC Power transistor

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LCD 16 x 4

Power Transformer

Supply TransformerPWM ic SG3524

LM339

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Main Intelligent UnitTemperature Sensor for BatteryProtection:

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Schematic diagram ofTemperature Sensor

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Schematic diagram of Power Drive

Unit(Darlington pair)

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