High Voltage DC Generation Project: Competency Demonstration Report

This report details a student's project on generating high voltage DC power using a single-phase AC supply. The project aimed to create a low-cost and efficient system using diode and capacitor circuits, eliminating the need for transformers. The report covers the project's objectives, including generating 2 kV DC voltage, reducing complexity, and simulating the system using Matlab Simulink. The student's responsibilities included designing the circuit diagram, selecting hardware components like insulated capacitors and diodes, and performing simulations to analyze the system's performance, including voltage regulation and ripple voltage. The project involved designing and analyzing various multiplier circuits (half-wave series, full-wave parallel, etc.) and collaborative work with a project team. The report concludes with a project review, highlighting the successful generation of a 5-stage multiplier voltage, with a maximum output of 2 kV, and discusses the student's contributions to the project, including hardware selection and circuit design. This report is a valuable resource for understanding the design and implementation of high-voltage DC power generation systems.

Competency Demonstration Report (CDR)
Career Episode 2

CE 2.1: Project Introduction
Name of the Project : Generation of high voltage DC by use of single phase Ac
supply
Geographical Location : [Please Fill]
Project Duration : [Please Fill]
Organization : [Please Fill]
Position in the Project : Team Member
CE 2.2: Project Background
CE 2.2.1: Characteristics of the Project
With the increasing demand of high voltage significantly increased with the high rate of
production. In traditional process, transformers are generally used for producing AC voltage at
high voltage. I have observed that this process of energy generation is much complex, bulky and
takes significant amount of cost. Therefore in this project, I have aimed at producing a low cost
yet highly efficient system for generation of the high voltage power. I have thus, undertaken the
project for the generation of high power voltage with the application of simple diodes and
capacitors units. Through his I have aimed for the generation of high voltage power with
cascading methods.
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CE 2.2.2: Objectives developed for project
In this project, I have developed my significant goal for generation of the DC voltage
with maximum power of 2 kv with the application of capacitors and diodes. I have observed that
in the field of electronics and circuit design, voltage transformers are used for increasing the
voltage. In this project, I have used the multiplier circuit of diode voltage for stepping up the
voltage without the need for applying transformer. In this project, I have completed the project
with the implementation of various objectives as discussed in the section below:
 To increase the voltage of the system with the application of capacitors and diodes;
 To significantly reduce the complexity and cost for high voltage generation with
single phase AC supply;
 To eliminate the application of transformer for generating DC voltage;
 To develop the block diagram required for the proposed system for generating DC
power;
 To determining the working principle for the proposed system;
 To develop the required proposed prototype model for generating DC voltage;
 To simulate the developed prototype model using Matlab Simulink;
CE 2.2.3: My area of work
I have developed the circuit diagram required for the implementation of the high voltage
generator. I have used the capacitors and diodes in the form of ladders and cascading element for
stepping up the higher values of the inputted voltage. For the implementation of the hardware
components, I have used insulated capacitors, and IN4007 diode. In addition to that, I have
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determined the general design for developing the maximizing the voltage for the proposed
system. Furthermore, after the development of the prototype model for the system, I have
demonstrated the operating frequency, output current and output and input voltage for the
system. I have further arranges the appropriate condition for the simulation of the developed
prototype and conducted the analysis in Matlab Simulation tool.
CE 2.2.4: Project Group
Figure 1: Team Member Associated for the development of the project
CE 2.2.5: My responsibilities throughout the project
In this project, I was provided with the responsibility of determining the connectivity
between the different hardware components required for the project. Therefore, I have prepared
the appropriate block diagram indicating all the hardware element and connectivity between
them. I have therefore the series lamp and integrated the capacitors and diodes in ladder network.
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In addition to that, I have used the voltage double circuit and connecting the same with cascading
circuit. In addition to that, I have further used the circuit for voltage multiplier for converting the
AC voltage for to the required DC voltage.
CE 2.3: Distinctive Activity
CE 2.3.1: Comprehending the Theory of the project
Figure 2: Block Diagram for the system
The proposed system that has been designed in this project consist of diode, capacitors,
voltage double circuit, potential divider, cascading circuit, and power supply. The rectifier used
in this project allows conversion of the alternate current to direct current. I have inputted the
amplified voltage to the voltage multiplier circuit and stepped up the low voltage to relatively
higher voltage values. I have obtained high voltage value from the multiplier circuit and used
potential divided for measuring the same.
I have used the 230 V Ac of input source for the system for generating 2 KV of DC
current. I have observed that in the traditional approach, transformers are used for stepping up
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the voltage. But, the output observed from the second step provides current decrement and
voltage multiplication. I have developed a ladder network for implementing the diodes and
capacitors with the system design. Through the application of the stepper network, I have
enhanced the inputted DC voltage with the application of the single Phase AC to maximum of 10
KV.
CE 2.3.2: Engineering Knowledge and Skills applied in the project
Figure 3: Prototype circuit diagram for the system
During the initial phase of project implementation, I have focused on the production of
10 KV of DC current through the system. I have used electrolyte capacitors and silicon diodes in
this system in each stage of the stepper. Further, during the implementation, I have connected the
capacitors in series network. The application of series formation has allowed me to implement
the criteria for the system for withstanding the maximum voltage. Through this I was able to
obtain and generate maximum of 2 KV of voltage with the implementation of voltage multiplier
with eight stages. While developing the circuit design, I have observed that the application was
not able to integrate the standard millimeter for measuring the output voltage. Therefore, for
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measuring AC low voltage current, I have used 10:1 potential divider. Through this I was able to
obtain 230 V from the AC input and high voltage reading such as 2 KV from the Dc output.
CE 2.3.3: Accomplishment and Task Performed
During the practical implementation of the I have observed that for the appropriate
application of various multiplier for enhancing the voltage power, various practical limits needs
to be implemented. In this project I have used VMI multipliers. Therefore, I have used 100 kHz
of input frequency and 15 kV of input voltage. In addition to that, I was engaged in the hardware
implementation of the proposed system. I have therefore, implemented the PCB circuit and
arranged appropriate environment for conducting the simulation and analysis in Matlab.
CE 2.3.4: Identified Issues and Their Solutions
Issue: In this project, I have developed both the parallel and series design for the voltage
generator. I have addresses both the types of multiplier format for selecting the appropriate
assemble design for the end application. During the design I have observed that less capacitance
is required for the parallel multipliers when compared to the series counterparts. I have faced
significant issue during the design when I tried to calculate the required voltage for regulation
and the ripple voltage for the system.
Solution: During the determination of the voltage regulation, I have observed that the
output current significantly decreased. Therefore, I have worked on the project for the
determination of the series half-wave multipliers used in the system. Therefore, in this project, I
have used capacitors of 1000 pF, input frequency of 50 KHz for the eight stage of the multiplier.
Therefore, I have observed 500 volts of regulation voltage. Through this, I was able to increase
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the voltage of the entire prototype model with the application of AC voltage. On the other hand, I
have used output voltage of 20 kV Dc and obtained the appropriate ripple voltage of 97.5 V.
CE 2.3.5: Plan for producing creative and innovative work
In order to provide creativeness and innovation in the project, I have included half wave
series, full wave parallel, half wave parallel and full wave series parallel multiplier circuit in the
circuit design. I have used MATLAB Simulation tool for analyzing and evaluating the efficiency
and performance of the developed system. I have developed the time- voltage graph for all the
multiplier circuit used in the voltage multiplier. In addition to that, I have developed the required
programming for generating the output of the half wave series circuit. Before developing the
circuit design,
CE 2.3.6: Collaborative work
I have worked for the implementation and development of the voltage multiplier. I have
focused on completing the requirement and design of the circuit using a collaborative approach. I
have focused on doing the project in a collaborative manner. I have participated in various group
activities and meetings for determining the appropriate plan for developing the circuit design and
implementing the voltage multiplier. In addition to that, I have discussed the issues that I have
faced with my project team as well as my project manager for the identification of the
appropriate solution.
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CE 2.4: Project Review
CE 2.4.1: Project Overview
After the simulation process, I have observed that prototype system was able to generate
5 Stage multiplier voltages. Maximum of 2 kV was generated from the developed prototype
model. In addition to that, the output observed from the system indicated slow fall and rise in the
voltage.
CE 2.4.2: My contribution to work
I have successfully identified the hardware and electrical components required in this
project for the design and implementation of the voltage multiplier. With the application of the
knowledge and skills of my past experience, I was successful in developing the appropriate
circuitry design of the voltage multiplier.
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