Word Files
Reference for Downloading Educational Files
  2. Electrical Engineering
  3. Optimizing the pulse generator using evolutionary algorithms

Optimizing the pulse generator using evolutionary algorithms

Number of pages: 82 File Format: word File Code: 32172
Year: 2013 University Degree: Master's degree Category: Electrical Engineering
Tags/Keywords: Evolutionary algorithms - Low power pulses - pulse generator - pulse power - Pulse technology - switch
  • Part of the Content
  • Contents & Resources

  • Summary of Optimizing the pulse generator using evolutionary algorithms

    Dissertation

    Master's degree

    Field: Power Orientation Electrical Engineering

    Abstract:

    Pulse power is a scheme to discharge stored electrical energy on the load in one or more short pulses with a controllable repetition rate. Pulse power generation technology is divided into two branches: low power pulses and high power pulses. Low-power pulses are in the range of several megawatts and high-power pulses have a power of gigawatts and terawatts or more.

    In this thesis, with the aim of producing the pulse waveform required for the production of metal sheets, a single-pole Marx generator with semiconductor parts is used; Then by bringing in the circuit with a delay of each layer, the required waveform is made as a pulse. A genetic algorithm is used to calculate the appropriate time for each class to enter the circuit.

    As time increases, due to the voltage drop of the energy storage capacitors in the Marks generator, the pulse level drops and as a result, the pulse waveform is out of the required state. To eliminate this problem, an active pulse width modulation compensator is used. In order to reduce the cost and increase the simplicity of the circuit, in this thesis, a new design for the active pulse width modulation compensator is presented; In this design, the auxiliary power supply is removed and a number of Marx generator capacitors are used as the main pulse compensator.

    All simulations in the Simulink environment [1] and mathematical calculations related to sampling the output pulse and comparing it with the model pulse and obtaining the error function are performed in the MATLAB programming environment [2] and the "Ghost" toolbar [3] is used to calculate the delay time of the switches of each unit.

    1 Introduction

    Pulse power is a scheme for discharging stored electrical energy onto a load in a short pulse or short pulses with a controllable repetition rate. Pulse power generation technology is divided into two branches: low power pulses and high power pulses. Low-power pulses in the field of telecommunications, high-speed electronics, measurement, and high-power pulses have a power of several megawatts or more, and the characteristics of these pulses are shown in the table below. The next step is the temporary storage of that energy, then the energy is quickly released from the temporary storage source and takes the form of a pulse. And finally, after compressing the pulse power, electrical energy is transferred to the load with high power levels and power density. [1]

    In addition to power and energy, pulses are also identified by their shape. For example, with rise time, fall time, pulse width or pulse surface smoothness. Usually, the width of high power pulses is considered to be between a few nanoseconds to a few microseconds. (Figure 1-1)

    Rise time is the time when the voltage increases from 10% to 90% of the final size. The drop time is the duration of the voltage drop from 90% to 10%. The rise and fall time depends largely on the load impedance, which usually varies with time. There is no single definition for the pulse width in the sources, but for some applications it is better to define the time when the waveform is at least 90% of the maximum value.

    (images are available in the main file)

    Pulsed power is a scheme for electrical stored energy on the load in a short pulse or short pulses with controllable repetition rate. Pulsed power technology is divided into generating low power and high power pulses. Low power pulses are in the range of megawatts and high power pulses are in the range of some tera watts.

    Some decades ago pulsed power science was born when east and west were in the challenge to invent new weapons such as laser guns and atomic bombs. But now-a-days researchers have explored new applications for pulsed power.Like: tumor treatment, exhausted gas refinement produced by fossil fuels, oil refinement, water and waste water refinement, microbial inactivation of foods and producing metal foils.

    In this thesis it is aimed to produce a pulsed shape that is needed in manipulating metal foils using all solid state mono polar Marx generator. Then by delayed starting of each floor in Marx generator, the supposed shape can be produced. For calculating the delay time of start command, genetic algorithm is used.

    Voltage droop in energy storing capacitors leads to droop in pulse surface and results in deforming of output pulse shape. For this problem the PWM[1] compensator is used.

    All simulations were performed in Simulink and mathematical calculations related to delay start time was done in MATLAB programming environment, GOSET[2] toolbox was used for genetic optimization.

  • Contents & References of Optimizing the pulse generator using evolutionary algorithms

    List:

    Basic concepts

    1-1 Introduction 2

    1-2 Storage 6

    1-2-1 Capacitive pulse sources 6

    1-2-2 Self-pulse sources 7

    1-2-3 Pulse compensating oscillator 7

    1-2-4 HPG unipolar generators 8

    1-2-5 Disc oscillator 10

    1-3 Closing switches 10

    1-3-1 Gas switches 10

    1-3-2 Semiconductor closing switches 11

    1-3-3 Magnetic switches 12

    1-4 Opening switches 14

    1-4-1 Fuse 14

    1-4-2 Mechanical breaker 15

    1-4-3 Superconducting opening switch 15

    1-4-4 Fluid (plasma) switch 15

    1-4-5 Semiconductor opening switch 16

    1-5 Transmission lines 17

    2 Applications of pulsed power

    2-1 Nuclear fusion 19

    2-2 Effects of pulsed electric field on living microorganisms 19

    2-2-1 Microbial inactivation 20

    2-3 Applications in cancer treatment 24 2-4 Fabrication of materials 27 2-4-1 Metal sheets 27 2-4-2 Pre-polishing of wood with laser pulses 27 2-4-3 Hard coating 29 2-4-4 High-speed metal forming 29

    2-4-4-1 Hydropulser 30

    2-5 Oil and chemical industry 31

    2-5-1 Ozone production 31

    2-5-2 Crude oil emulsion breaking with pulsed high voltage electric fields 32

    2-6 Gas treatment 33

    2-7 Water and wastewater treatment 34

    3 Research background and proposed method

    3-1 Requirements of pulse generator in material engineering 37

    3-2 Marx generator 38

    3-3 Solid state repeating pulse generator 40

    3-3-1 Charging 40

    3-4 Introduction of proposed switching using genetic algorithm 44

    3-4-1 Genetic algorithm 46

    3-4-2 Advantages of using genetic algorithm 50

    3-5 Voltage pulse edge compensation 50 3-5-1 Pulse width modulation compensation method 52 3-5-2 Design of pulse width modulation compensating parameters 53 3-5-3 MOSFET command signal 54 3-5-4 Auxiliary power supply voltage 57 3-5-5 Ccp capacitor 57 3-6 Proposed circuit for Marx generator compensation 58 4 Simulation results 4-1 Setting the trigger times of the units 60 4-2 Pulse edge compensation 64 4-3 Improving the pulse shape with the help of compensation Making 71 5 Conclusions and Suggestions 1-5 Conclusion 74 5-2 Suggestions 74 References 76 English Abstract                                                                                                                     

    Appendix                        

    Source:

    Bali Lashek Arif, review of theoretical foundations and principles of operation in pulsed power technology and its applications, Malek Ashtar University of Technology, 1387

    Mehdi Gurbanloo, "Simulation and design of capacitive pulsed sources", University of Science and Technology, Dissertation No. 187

    Amir Hossein Abbasi, investigation of SOS opening switch in pulsed power applications, University of Tehran

    Controversy of electrical breakdown in order to design a closing switch with operation time under nanoseconds with a pressure less than one atmosphere, University of Tehran

    Saeedah Sadat Mir Saeed Qazi "Pareto multi-objective optimization with probabilistic method" thesis of Payam Noor University, Department of Applied Mathematics, November 2019

    Kaviani Cherati Hanif, sterilization of liquids using high voltage pulsed electric fields, Iran University of Science and Technology

    Hanjoachim Bluhm, "pulsed power system" principles and applications, library of congress control number: 2005929279, Murch 2006

    En.Wikipedia.com

    Mansson-EPRI project manager, "pulsed power technology and applications-scandinavia, TR-112566, final report, april 1999

    Tkotnik, p.kramar, g.pucihar and d.miklavcic, “Cell membrane electroporation-part1:the phenomena”, IEEE trans, elec.ins, vol.28,no.5, September 2012

    Kang huang, jianping wong, “design of pulsed electronic fields treatment chambers for liquid foods pasteurization process: a review", Elsevier, food eng., vol.95, pages:227-239, June 2009

    Bveridge, mac georgar, marila, "Comparison of the effectiveness of biphase and monophase rectangular pulses for the inactivation of micro organisms using pulsed electric fields", IEEE.trans, plasma, vol.30, no.4, August 2002

    Chen, zhang, xiao, "influence of pulse rise time on inactivation of staphyloccus aureus by pulsed electric fields", IEEE.trans, plasma, vol.38, no.8, August 2010

    Yao, jiang, li, "a ns-us duration, milliesta, exponential decay pulsed magnetic fields generator for tumor treatment", IEEE.trans, dielec, vol.18, no.4, August 2011

    Sundarajan, jan, xiao, salameh, "effective proliferation control of human cancer cells using electrical pulses", IEEE.trans, dielec, vol.19, no.6, December 2012

    www.kebaila.com

    Vaze, arjunan, Gallagher, vasiliet, "air and water sterilization using non thermal plasma", IEEE 2007

    E. kuffel, W.S.zaengl, j.kuffel "High voltage engineering" fundamentals, second edition, ISBN:0 7506 3634 3, 2000

    L.M. Redondo, J. Fernando Silva, P. Tavares, Elmano Margato, "All Silicon Marx-bank topology for high-voltage, high-frequency rectangular pulses", IEEE 2005

    Steven F. Glover, E. Whit, Kim W. Reed, and Michael J. Harden, "GeneticOptimization for Pulsed-Power System Configuration", IEEE. Trans.plasma, vol.37, NO. 2, FEBRUARY 2009

    Bob Richardson, tudor pike, “pulse droop compensation using a pwm technique”, IEEE 2008, e2v Technologies, Waterhouse Lane, Chelmsford, Essex, CM1

    S.D. Sudhoff, “GOSET Genetic Optimization System Engineering Tool” for use with MATLAB, http://cobweb.ecn.purdue.edu/~sudhoff/ 2010,

    www.voltagezone.com-2014/19/1

    www.overunity.com-2014/19/1

    www.forums.tdiclub.com-2014/19/1

    www.watchtv.net-2014/19/1

    www.photocamel.

Optimizing the pulse generator using evolutionary algorithms
How To Access The File
Related Contents:
Number of pages: 91 Category: Management

Master's thesis in the field of power electronics, power electronics, Abstract: The use of pulsed power sources in various plasma processes is increasing due to the relationship established between them. According to the research done in this case, the design of pulsed power sources with the aim of reducing losses and increasing efficiency can have important effects on plasma ...

Number of pages: 91 Category: Management

Master's thesis in the field of power electronics, power electronics, Abstract: The use of pulsed power sources in various plasma processes is increasing due to the relationship established between them. According to the research done in this case, the design of pulsed power sources with the aim of reducing losses and increasing efficiency can have important effects on plasma ...

Number of pages: 114 Category: Electrical Engineering

Master's thesis in the field of electrical power Abstract: Pulsed power is the accumulation of energy after a relatively long period of time and the release of energy very quickly. This process is to increase the instantaneous power of the system. The characteristic of this pulse includes the voltage level and rise time based on the load requirements. Improvement of efficiency ...

Number of pages: 120 Category: Electronic Engineering

Master's thesis in the field of electrical engineering-communication system for removing interference in the passive radar reference channel based on digital TV broadcast signal by terrestrial transmitters with a reproduction approach. In this thesis, a digital receiver for signal processing in a passive radar reference receiver based on orthogonal frequency division modulation ...

Number of pages: 120 Category: Electronic Engineering

Master's thesis in electrical engineering, power, power trend, abstract network development planning, operation planning and finding solutions to improve the security and economic performance of the power system all require system studies. The most necessary step in conducting these studies is network modeling, which itself requires detailed information about the impedance ...

Number of pages: 84 Category: Electronic Engineering

Master's Thesis Farsi Abstract: Today, with the expansion of DC consumers and non-linear loads connected to the network, the design and construction of power factor correction circuits using electronic power converters has gained special importance. With the advancement of technology, integrated circuits have come to help in this field. Due to the complexity and non-linear ...

Number of pages: 112 Category: Electrical Engineering

Dissertation for master's degree in electrical engineering, power orientation Abstract: The use of renewable energy to produce electrical energy has increased increasingly with the expansion of the use of flexible alternating current transmission systems (FACTS), to compensate for the quality of power and voltage, the range of use of these energies has increased.

Number of pages: 86 Category: Electrical Engineering

Thesis for master's degree in the field of electrical engineering (power) Farsi abstract: Today, with the expansion of DC consumers and non-linear loads connected to the network, the design and construction of power factor correction circuits using electronic power converters has gained special importance. With the advancement of technology, integrated circuits have come to help ...

Number of pages: 119 Category: Telecommunication Engineering

A master's thesis in the field of electrical-telecommunications engineering (field) Abstract: Investigation of coupling effects in arrays of wire antennas for use in passive radar has always been concerned with detecting targets that are immune to visual vision. Electromagnetic waves can be used to identify targets. The first step to receiving waves is a suitable antenna array. ...

Number of pages: 182 Category: Electrical Engineering

Dissertation of the master's degree in the field: Electrical Engineering - Power trend. Abstract Today, despite the wide use of sensitive loads such as power electronics, computers and non-linear loads in distribution networks, the issue of power quality has received more attention. Most of these loads are sensitive to voltage changes, such as undervoltage and overvoltage, and ...