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GATES INSTITUTE OF TECHNOLOGY::GOOTY
(Approved by A.I.C.T.E New Delhi , Affiliated to JNTU Ananthapuram )
Gooty ananthapur...
A PROJECT PRESENTATION
ON
AUTOMATIC ACTIVE PHASE SELECTOR FOR SINGLE
PHASE LOAD FROM THREE PHASE SUPPLY
UNDER THE GUIDENCE...
OBJECTIVE:
●The main of this system is to provide uninterruptable for single phase loads
even in the failure of one or two...
ABSTRACT:
● Phase absence is a very common in any industry , home or office . Many
times one or two phases may not be live...
BLOCK DIAGRAM:
BLOCK DIAGRAM OF POWER SUPPLY:
COMPONENTS:
Hardware Components:
● Microcontroller:AT89S52
It is a control device which incorporates a microprocessor.
AT8...
SOFTWARE COMPONENTS:
● Keiluv IDE tool:
It is an integrated development environment is a software suite that
consolidates ...
CIRCUIT DESCRIPTION:
● The circuit is build around a transformer , comparator , relay ,
micro controller unit and transist...
ADVANTAGES:
● More Reliable
● Provide Constant Voltage
● High Stability
● Zero Man-Made Errors
● Continuous running of sin...
CONCLUSION:
By using this circuit we can solve the problem of low voltage in
single phase systems.
APPLICATIONS:
● To avoi...
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AUTOMATIC ACTIVE PHASE SELECTOR FOR SINGLE PHASE LOAD FROM THREE PHASE SUPPLY

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we mahesh and yasaswani prepared this project abstract review

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AUTOMATIC ACTIVE PHASE SELECTOR FOR SINGLE PHASE LOAD FROM THREE PHASE SUPPLY

  1. 1. GATES INSTITUTE OF TECHNOLOGY::GOOTY (Approved by A.I.C.T.E New Delhi , Affiliated to JNTU Ananthapuram ) Gooty ananthapuram (V),Gooty-515401 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SUBMITTED BY SEPURI MAHESH & KAGITHALA YASASWINI
  2. 2. A PROJECT PRESENTATION ON AUTOMATIC ACTIVE PHASE SELECTOR FOR SINGLE PHASE LOAD FROM THREE PHASE SUPPLY UNDER THE GUIDENCE OF Mr.M.PARAMESH M . Tech ASSOCIATE PROFESSOR CONTENTS: ● INTRODUCTION ● ABSTRACT ● BLOCKDIAGRAM ● COMPONENTS ● DESCRIPTION ● WORKING ● ADVENTAGES ● APPLICATIONS ● CONCLUSION
  3. 3. OBJECTIVE: ●The main of this system is to provide uninterruptable for single phase loads even in the failure of one or two phases in a three phase system. INTRODUCTION: ● Power instability in developing countries creates the need for automation of phase selection or alternative sources of power to back-up the utility supply. ● If any one or two phases in a three phase supply interrupted or goes low and you want the equipment to work on normal voltages then this circuit will give you the solution. ● This system is designed to monitor the presence of supply to the three phase and to display the condition of each phase on an LCD. ● Most industrial and commercial applications depends upon the power supply.
  4. 4. ABSTRACT: ● Phase absence is a very common in any industry , home or office . Many times one or two phases may not be live in three phase supply . Because of this, many times , some electrical appliances will be ON in one room and OFF in another room .This creates a big disturbance to our routine work. ● This project is designed to check the availability of any live phase, and the load will be connected to the particular live phase only . Even a single phase is available , and then also , the load will be in ON condition . whenever the phase is not available the buzzer will ON . ● This project is designed with AT89S52 MCU . This controller continuously checks for live condition of all phases connected to it and the controller connects the load to the Active phase using a relay. ● If two or three phases are live , the load will be connected to the phase 1 only . An LCD is provided to display the status of the phase condition , Contrast control preset is given for LCD contrast control. ● This project uses regulated 12v , 500mA power supply . 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of the secondary of 230/12v step down transformer .
  5. 5. BLOCK DIAGRAM:
  6. 6. BLOCK DIAGRAM OF POWER SUPPLY:
  7. 7. COMPONENTS: Hardware Components: ● Microcontroller:AT89S52 It is a control device which incorporates a microprocessor. AT89S52 is a powerful microcontroller which provides a highly flexible and cost effective solution to many embedded control applications. ● RPS: Regulated power supply . Is an embedded circuit it converts unregulated AC into a constant DC with the help of rectifier. ● LCD Display: Liquid crystal display for visual representation of active phases. ● RELAY: It is an electrically operated switch.an electrical device typically incorporating an electromagnet , which is activated by a current or signal in one circuit to open or close another circuit. ● BUZZER: It is an electrical device that makes a buzzing noise and is used for signaling. ● BULB: Incandiscent bulb to check wheather the supply is active or not.
  8. 8. SOFTWARE COMPONENTS: ● Keiluv IDE tool: It is an integrated development environment is a software suite that consolidates the basic tools need to develop the write and test software. ● Micro C Flash: It is the powerful C compiler. ● Embedded C Programming: It is the most widely used programming language for embedded processors/controllers.
  9. 9. CIRCUIT DESCRIPTION: ● The circuit is build around a transformer , comparator , relay , micro controller unit and transistor. ● Here step-down transformer is used along with the regulator and filter. ● Three identical sets of this circuit are used each for three phases. WORKING: ● It monitors the presence of three phases and to display the condition of each phase on an LCD . ● It monitors the voltage condition of the each phase . If voltage level of any phase is under the rated/specified voltage rating , immediately this phase is connected to a healthy phase thus , supplies to the load. ● The phase voltage is stepped down 230v to 12v , 300mA. ● Thus appliances are protected against under voltage by shifting the AC supply to the absence phase.
  10. 10. ADVANTAGES: ● More Reliable ● Provide Constant Voltage ● High Stability ● Zero Man-Made Errors ● Continuous running of single phase loads ● Better Customer Service DIS-ADVANTAGES: ● Jumping from phase to phase have some phase overlap issues. ● Time wasting whenever there is power failure. ● Maintenance is more frequent as the changeover action causes wears and tears.
  11. 11. CONCLUSION: By using this circuit we can solve the problem of low voltage in single phase systems. APPLICATIONS: ● To avoid natural/manual transmission of phases ● Implemented in low load offices and Residences ● Single Phase Motors ● ATM

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