HIGH VOLTAGE DC GENERATION USING MARX GENERATOR
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This is to certify that the research work,"high voltage dc generation using marx generator"by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.
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The main aim of the project proposes high voltage DC generation using Marx generator precept that uses MOSFET alongside capacitor stacks. The Marx precept turned into brought with the aid of Erwin Otto Marx. Theprinciple includes producing a pulse of excessive voltage with the aid of the usage of some of capacitors parallel in aneffort to charge up to on time after which installation in connection collection to develop an excessive voltage for theduration of the off length. The machine is used inside the method of era of in Kv’s for actual time checking out to befinished on electrical equipment insulation effectiveness to be placed up on strength carriers. The system includes 4stages of diodes, one MOSFET in conjunction with one capacitor. Diodes are used incapacitor charging at every stage and MOSFET is used as a transfer to keep away from powerlosses. The capacitorsare charged in parallel in the course of the ON time using 555 timer. The capacitors are delivered in a sequence the useof MOSFET switches in the course of the OFF time. Our challenge offers a compact and smooth device from a DCdeliverof12Vtogetanapprox(36-40)Volts.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
- STATEMENT OF THE PROBLEM
- AIM AND OBJECTIVES OF THE PROJECT
- SCOPE OF THE PROJECT
- SIGNIFICANCE OF THE PROJECT
CHAPTER TWO
LITERATURE REVIEW
- REVIEW OF THE STUDY
- REVIEW OF RELATED STUDIES
- REVIEW OF HIGH-VOLTAGE DIRECT CURRENT (HVDC)
- OVERVIEW OF HVDC TECHNOLOGY
- RECENT DEVELOPMENT IN HVDC TECHNOLOGY
- MAIN AREAS OF HVDC APPLICATIONS
- MARX GENERATOR
- PROPOSEDMETHOD
CHAPTER THREE
3.0 MATERIAL AND METHOD
3.1 BLOCKDIGRAM
3.2 SYSTEM CIRCUIT DIAGRAM
3.3 CONNECTIONS
3.4 WORKING OF THE SYSTEM
3.5 DESIGNCALCULATIONS
CHAPTER FOUR
4.0 RESULT ANALYSIS
- CONSTRUCTION PROCEDURE
- ASSEMBLING OF SECTIONS
- PACKAGING
- MOUNTING PROCEDURE
- TESTING
- RESULTS
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
Rapid discharge of stored energy in short interval as electrical pulses into a load produces big quantity of instant power.The traits of pulse as rise time, fall time, pulse width, repetition charge, a voltage and strength tier varies with uniqueapplications. High voltage pulsed electricity have extensive variety of programs in exclusive fields like industrial,scientific, agricultural, environmental etc. Marx Generatoris anexcessive voltage pulse generator. The essentialprecept of Marx Generator is that the capacitors are charged in parallel as much as its input DC voltage stage. Thosecapacitors are then related in series the use of switches to produce an excessive voltage pulse throughout the burdentechnology.Withtheimprovementofsolidstateelectronics,solid-statedeviceshavebecomemoreandmoreappropriate for pulsed power application. They might offer the pulsed energy systems with compactness, reliability,excessive repetition fee, and lengthy existence time. The rising of pulsed electricity generators the usage of solid-stategadgets gets rid of barriers of traditional additives, and promises pulsed strength era to be extensively utilized inbusiness packages. However, strong-state switching devices inclusive of MOSFET to be had now are best rated up to 3kilovolts.Maximumofpulsedpowersystemsdemandofmuchhighervoltagerating.
Switching devices are vital additives in pulsed power systems. Conventional Marx Generator use spark gas switches.These switches possess barriers like short lifestyles time interms of numberof operationcycles, low switchingfrequency, huge length, extra maintenance and many others. In current years the strong country switches like MOSFETor IGBT is utilized in place of spark gaps. The benefits of solid country switches are compact, reliable, bendy, moreefficient, long lifestyles time, low charges and reduced losses.The output pulse width and amplitude each may bevariedbycontrollingthegatecontrolpulsestotheswitches.
BothMOSFET and IGBT give variable pulse width and can generate a fast pulse rise time within a few ns across theload. The switching time of MOSFET is much lesser than IGBT (typically:- 20 ns for a MOSFET, 200 ns for an IGBT).IGBTareavailableathighervoltageratings(upto6500V),whereastheMOSFETsarelimitedto1200V.
1.2 STATEMENT OF THE PROBLEM
In the past, to generate a high voltage DC involves using a step up transformer and the this involves much conversion process and also expensive. With the development of solid-state electronics, solid-state devices are becoming more and more suitable for pulsed power application. They could provide the pulsed power systems with compactness, reliability, high repetition rate, and long life time. The rising of pulsed power generators using solid-state devices eliminates limitations of conventional components, and promises pulsed power technology to be widely used in commercial applications. However, solid-state switching devices such as MOSFET available now are only rated up to a few kilo Volts. Most of pulsed power systems demand much higher voltage ratings.
1.3 AIM AND OBJECTIVES OF THE STUDY
The main of this work is to build a high voltage DC generation using Marx generator. The objectives of the study are:
- To build the system prototype
- To generate a high voltage DC generation using Marx generator
- To simulate the system circuit using Multisim software
1.4 SCOPE OF THE STUDY
The scope of this work generating a pulse of high voltage by using a number of capacitors parallel in order to charge up to on time and then set up in connection series to develop a high voltage during the off period. The system is used in the process of generation of in Kv’s for real time testing to be carried out on electrical appliance insulation effectiveness to be put up on power carriers. The system consists of four different stages such that each one is made up from two diodes, one MOSFET along with one capacitor. The capacitors are charged in parallel during the ON time using 555 timer. The capacitors are brought in a series using MOSFET switches during the OFF time.
1.5 SIGNIFICANCE OF THE STUDY
This study will serve as a means of producing a cheap and reliable high voltage DC.
CHAPTER FIVE
5.1 CONCLUSION
The simulation gives the concept of HVDC generation i.e., 2kV the use of sphere gaps. In this study, solid state devicesconsisting of MOSFET and diodes are used in Marx generator to replace of switches and resistors. Moreover, its milesreasonable that MOSFET drivers make use of method of self-provided power. The Marx generator is used to multiplyvoltage by way of the usage of MOSFETS. The number of MOSFETS used comes to a decision the wide variety oftimes the voltage needs to be increased.Inthis examine we've got usedfourstages in hardware and the circuitmultiplies theentervoltageeffectively.
5.2 RECOMMENDATION
The output voltage increment depends on the amount of stages. The switching devices i.e., MOSFETS is replaced byway of the alternative devices. In this circuit we obtain high voltage and low current so in future we increase voltage aswellascurrent.
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of"high voltage dc generation using marx generator" is also available. Order full work to download. Chapter two of"high voltage dc generation using marx generator"consists of the literature review. In this chapter all the related work on"high voltage dc generation using marx generator"was reviewed.
CHAPTER THREE: The complete chapter three of"high voltage dc generation using marx generator"is available. Order full work to download. Chapter three of"high voltage dc generation using marx generator"consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of"high voltage dc generation using marx generator"is available. Order full work to download. Chapter four of"high voltage dc generation using marx generator"consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of"high voltage dc generation using marx generator"is available. Order full work to download. Chapter five of"high voltage dc generation using marx generator"consist of conclusion, recommendation and references.
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