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Design And Construction Of 2kva Inverter
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4.1.3 FREQUENCY DIVISION COUNTER
This unit is made up of integrated circuit, it serve as a counter to divide the 100Hz signal generated into two equal part i.e 50Hz (Nigeria Standard), these divided frequency of 50Hz each is in the anti-phase and therefore are each alternating fed to the base of the MOSFET in the inverting stage.
4.1.4 FREQUENCY UNIT
The purpose of this project is to remove all harmonic i.e distortion from the modified sine-wave so that the output could become on approximately sine-wave which is required to power appliance filtering is accomplished with the shunting the output from the transformer with a capacitor of rating 2µf, 350volts in this project work.
4.1.5 COMPONENT TESTING
The first step to be taken after all component/materials has been carefully subjected is to test and check if each of the component one good or defective
Various components such as the resistor is tested by putting the multi-meter in ohms range and the two probes of the meter is connected on both side of the resistor respectively. Also the ohmmeter was used in the construction.
4.1.6 TESTING OF THE INVERTER
Overall testing was carried out on the inverter after housing and coupling to make sure the inverter is powered by 24volts DC. It lift up a 60W to 80W, the voltage at load was taken and found to be slightly less than 260volts, the load was then gradually increased to 900W the output was discovered to be 240volts.
4.1.7 STAGE BY STAGE TESTING
Before powering the circuit constructed, visual inspection of the various point soldered are checked to avoid cold and dry joint, then ohm’s meter is used to detect if there is open and shot circuit.
The output of the IC SG3524 was tested with and oscilloscope and it was found that it generate pulse of 100Hz also the pin 10 and 11 of the frequency divider were tested with the same oscilloscope and the result was pulse signal of 50Hz, which shows that the frequency has being divided into two as desired. Then the inverting and amplifying stage was also tested to ensure that there is actual inversion of the 12volts D.C input signal to an alternating one by using voltmeter.
Finally the secondary side of the transformer was tested with A.C voltmeter and the output was found to be 220volts A.C source, which shows that the voltage has been step-up to power A.C appliance. (David L.A.(2001), Modern UPS Servicing Marc Dowell Publishers, London )
BLOCK DIAGRAM OF AN INVERTER
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ABSRACT - [ Total Page(s): 1 ]ABSTRACTThis project presents the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices/homes in the absence of power supply from National Supply Authority.It is designed in such a way that it will take up to 12V DC from battery and inverts it to an output of 220V, 50Hz AC. It makes no noise during operation and not hazardous like carbon monoxide is generated to the surrounding. This is the feature makes it safe to used anywhere whe ... Continue reading---
TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTTITLE PAGE CERTIFICATION DEDICATION ACKNOWLEDGMENTABSTRACT TABLE OF CONTENT CHAPTER ONEINTRODUCTION1.1 BACKGROUND OF THE STUDY 1.2 PROBLEM OF STATEMENT 1.3 AIM AND OBJECTIVE1.4 SCOPE OF THE PROJECT 1.5 METHODOLOGY1.6 MOTIVATION 1.7 LIMITATION OF THE PROJECTCHAPTER TWOLITERATURE REVIEW2.0 INVERTER 2.1 HISTORY OF INVERTER2.2.1 GENERAL FEATURES OF THE PROTECT2.2.1 POWER SUPPLY UNIT2.2.2 CHANGENG OVER UNIT 2.2.3 SWITCHING UNIT2.2.4 UNDER AND OV ... Continue reading---
CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONEINTRODUCTION1.2 Background of the Study An inverter is an electronics device or circuitry that changes direct current (D.C) to Alternating current [AC]. The device make used of an in–built automatic circuit to achieve a complete automation of the entire system. The input voltage, output voltage, frequency and overall power handling depend on the design of a specific device or circuitry. An inverter is very important element that cannot be neglected in this Country as it i ... Continue reading---
CHAPTER TWO - [ Total Page(s): 2 ]CHAPTER TWOLITERATURE REVIEW2.0 INVERTER An enabling technology, power electronics does it job with intelligence, precision and efficiency. It used the smartness of advanced control technology with the efficient conversion of electric power into the precise from required to control a function or process. In a industrial and commercial products, it is gaining ground mostly visible among inverters which converts direct current (DC) into a single or poly phase AC voltage at a desire aptitu ... Continue reading---
CHAPTER THREE - [ Total Page(s): 9 ]There are two main categories of transistor:1. Bipolar junction transistor (BJT): it also divided into NPN and PNP transistors.2. Field effect transistor (FET): it has three terminal unipolar solid state device in which current is controlled by an electric field as is done in vaccum tubes (http://www.amplifieredparts.com/2017/05/27 product/transistor.tip416-npn-epitaxial-transistors).There are two types of FETs.a. Junction field effect transistor (JFET)Metal-oxide semi- ... Continue reading---
CHAPTER FIVE - [ Total Page(s): 1 ]CHAPTER FIVECONCLUSION AND RECOMMENDATION 5.1 CONCLUSIONThe basic objective of the project that were realized include the guarantee of the supply during the absence power from service authority, the elimination of power surges and energy management induction of bill amazed from fuel cost and generator maintenance. The inverter is more environmentally friendly, easier to operate and required very little maintenance compared to a generator.Through the project is efficient and reliable, it has so ... Continue reading---
REFRENCES - [ Total Page(s): 1 ]REFERENCESBEDOFORD,B.D, et al. Principle of inverter circuit New York, John Willey, (1964). David L.A. Modern UPS Servicing, Marc Dowell publishers, London, (22nd Edition) 2001.Manahar Lofia, Modern Digital Inverter-Introduction Servicing and Troubleshooting, (23rd edition)1996.OYETUNJI TOBI,S. (2015), construction of 2KVA inverter Electrical/Electronic Engineering Project Power Option HND II Finial Year, Unpublished.Tharaja B.L et al, A Textbook of Electrical Technology, S. Chand & Company Lt ... Continue reading---
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ABSRACT - [ Total Page(s): 1 ]ABSTRACTThis project presents the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices/homes in the absence of power supply from National Supply Authority.It is designed in such a way that it will take up to 12V DC from battery and inverts it to an output of 220V, 50Hz AC. It makes no noise during operation and not hazardous like carbon monoxide is generated to the surrounding. This is the feature makes it safe to used anywhere whe ... Continue reading---