Projects - User contributions [en]

Projects:2021s1-13152 Terahertz coherent tomography for inspection of leaf moisture content in-situ

2021-04-09T04:50:31Z

A1705054: Undo revision 16058 by A1704508 (talk)

[[Category:Projects]]
[[Category:Final Year Projects]]
[[Category:2021|106]]
Abstract here
== Introduction ==
The terahertz range is an electromagnetic spectrum between 0.1 and 10 THz. It locates at the transition between the electronics and photonics domains. Terahertz waves yield an exciting capability of non-destructive evaluation (NDE), since they can penetrate dry and non-metallic materials. In the past, terahertz waves have been used to monitor moisture content in leaves. However, most studies were conducted in transmission, not suitable for field testing. In this project, the students will conduct feasibility study on terahertz sensing of overlapping leaves in reflection. It will involve coherent tomography and Bessel beam forming. They will learn skills in optics, signal processing, and terahertz measurement.
For more information about the group: https://www.thz-el.org/

=== Project team ===
==== Project students ====
* Bryce Chung
* Edmond Claridge Bell
==== Supervisors ====
* Withawat Withayachumnankul
* Xiaolong You
==== Advisors ====
* Vinay Pagay

=== Objectives ===
Set of objectives

== Background ==
=== Topic 1 ===

== Method ==

== Results ==

== Conclusion ==

== References ==
[1] a, b, c, "Simple page", In Proceedings of the Conference of Simpleness, 2010.

[2] ...

Projects:2021s1-13152 Terahertz coherent tomography for inspection of leaf moisture content in-situ

2021-04-09T04:50:16Z

A1705054: Undo revision 16061 by A1704508 (talk)

[[Category:Projects]]
[[Category:Final Year Projects]]
[[Category:2021|106]]
Abstract here
== Introduction ==
The terahertz range is an electromagnetic spectrum between 0.1 and 10 THz. It locates at the transition between the electronics and photonics domains. Terahertz waves yield an exciting capability of non-destructive evaluation (NDE), since they can penetrate dry and non-metallic materials. In the past, terahertz waves have been used to monitor moisture content in leaves. However, most studies were conducted in transmission, not suitable for field testing. In this project, the students will conduct feasibility study on terahertz sensing of overlapping leaves in reflection. It will involve coherent tomography and Bessel beam forming. They will learn skills in optics, signal processing, and terahertz measurement.
For more information about the group: https://www.thz-el.org/

=== Project team ===
==== Project students ====
* Bryce Chung
[[File:Jake.jpg|115px|frameless|left]] 
* Edmond Claridge Bell
[[File:Duncan.jpg|115px|frameless|left]] 
==== Supervisors ====
* Withawat Withayachumnankul
[[File:Jake.jpg|115px|frameless|left]] 
* Xiaolong You
[[File:Duncan.jpg|115px|frameless|left]] 
==== Advisors ====
* Vinay Pagay
[[File:Duncan.jpg|115px|frameless|left]] 
=== Objectives ===
Set of objectives

== Background ==
=== Topic 1 ===

== Method ==
Fail repeatedly until something works

== Results ==

== Conclusion ==

== References ==
[1] a, b, c, "Simple page", In Proceedings of the Conference of Simpleness, 2010.

[2] ...

Projects:2021s1-13152 Terahertz coherent tomography for inspection of leaf moisture content in-situ

2021-04-09T04:49:40Z

A1705054: Undo revision 16063 by A1704508 (talk)

[[Category:Projects]]
[[Category:Final Year Projects]]
[[Category:2021|106]]
Abstract here
== Introduction ==
The terahertz range is an electromagnetic spectrum between 0.1 and 10 THz. It locates at the transition between the electronics and photonics domains. Terahertz waves yield an exciting capability of non-destructive evaluation (NDE), since they can penetrate dry and non-metallic materials. In the past, terahertz waves have been used to monitor moisture content in leaves. However, most studies were conducted in transmission, not suitable for field testing. In this project, the students will conduct feasibility study on terahertz sensing of overlapping leaves in reflection. It will involve coherent tomography and Bessel beam forming. They will learn skills in optics, signal processing, and terahertz measurement.
For more information about the group: https://www.thz-el.org/

=== Project team ===
==== Project students ====
* Bryce Chunt
[[File:Jake.jpg|115px|frameless|left]] 
* Edmond Claridge Bell
[[File:Duncan.jpg|115px|frameless|left]] 

==== Supervisors ====
* Withawat Withayachumnankul
[[File:Jake.jpg|115px|frameless|left]] 
* Xiaolong You
[[File:Duncan.jpg|115px|frameless|left]] 
==== Advisors ====
* Vinay Pagay
[[File:Duncan.jpg|115px|frameless|left]] 
=== Objectives ===
Set of objectives

== Background ==
=== Topic 1 ===

== Method ==
Fail repeatedly until something works

== Results ==

== Conclusion ==

== References ==
[1] a, b, c, "Simple page", In Proceedings of the Conference of Simpleness, 2010.

[2] ...

Projects:2021s1-13009 Investigation and Development of a Solar Charger with Wide Bandgap Devices

2021-04-09T04:48:48Z

A1705054: /* Project students */

[[Category:Projects]]
[[Category:Final Year Projects]]
[[Category:2021s1|106]]
Wide Bandgap (WBG) devices and ultra-wide bandgap (UWBG) devices (GaN and SiC) have recently emerged in response to the limitations of existing converters (limited power density, low and variable efficiency, and sensitivity to environmental conditions) and ever extending applications (renewable energy integration, energy storage, electric vehicles, and power grid transformation). For example, WBG devices offer up to 10x faster switching speeds than traditional silicon devices, hence, offering miniaturization, can function at higher operating temperatures without active cooling, have lower breakdown voltage and lower Ron.

== Introduction ==

In this project, a solar charger will be designed and developed to utilize the distinct benefits of WBG devices. The desirable characteristic features of the charger/converter are:
* Connected to higher voltage PV panels (approx. 60V).
* Wider operating voltage.
* Current rating: 40A.
* Operating voltage range: 12-16.5V.
* Non-Isolated step up/down operating under current limited voltage control mode.
* Higher frequency switching.
* High efficiency in a wide power range.
* High power density.
* High operating temperature.

=== Project team ===
==== Project students ====
* Tacob Jilley
[[File:Duncan.jpg|115px|frameless|left]] 
* Bluncan Dack
[[File:Jake.jpg|115px|frameless|left]] 

==== Supervisors ====
* A/Prof. Nesimi Ertugrul
* Dr. Said Al-Sawari
* Mr. Don Terrace (REDARC Electronics Pty Ltd)

== Background ==
* REDARC are interested in developing high performing solar charge controllers
* Opportunity to implement a MPPT-controlled DC-DC converter using established MPPT algorithm.

== Objectives ==
The Objectives of this project are:
* To develop a high-switching-frequency capable PWM DC-DC converter.
* To choose a Converter Topology for the converter.
* To model, test and decide on the wide-bandgap device to be used.

'''AND''' 

* Develop a MPPT solar regulator that fits the following requirements: 
** '''Input Interface (Solar Panel):'''
*** 24 – 60V range
*** PWM high-frequency switching (< 1 MHz)
*** Maximum input power controlled by REDARC MPPT algorithm
** '''Output Interface (12V Battery):'''
*** Regulated 14.5-16.5V
*** Regulated 40A
** '''Physical Requirements:'''
*** Size approx. that of A5 Diary (approx. 150x210mm)
** '''Component Requirements:'''
*** Must be able to withstand 60V and 40A whilst maintaining high switching frequency characteristics

== Method ==
====Identify Research Gap====
We hope to demonstrate that Wide Bandgap material can be used in commercial industry.
* Our project will contribute to the field of research demonstrating these devices’ potential for commercial applications and will further this by proposing a consumer product to REDARC; our prototype design.

====Planning====
Project Management
* Work Breakdown Structure created to define work packages
* Initial Risk Assessment completed
* Project timeline / Gantt Chart developed
Initial Risk Assessment:
* '''Safety as a Major Risk:'''
** COVID-19 Impact on Project
** Build and Test
*** ''Electric Shock (~580W maximum exposure)''
*** ''Mitigation: SOP to be written for planned task''
** Laboratory Hazards
*** ''Soldering Burns''
*** ''Electric Shock from Equipment''
* '''Schedule Risks to consider:'''
** Inadequate background knowledge and understanding of the context of research
*** ''Allow sufficient time to develop research''
** Implementation failed to achieve goals due to poor design
*** ''Allow sufficient time to develop design and consider alternatives''
* '''Risks to Cost:'''
** Initial Projection: evaluation board, variety of Wide Bandgap Devices
*** ''Material costs can be covered by the University.''
** REDARC sponsorship allows us to use industry-leading production facilities.
*** ''Risk to budget is considered a minor risk.''

== Gantt Chart ==

[[File:Gantt 1.png|500px|frameless|left]] 
[[File:Gantt 2.png|500px|frameless|left]] 
 

== Results ==

== Conclusion ==

== References ==
[1] a, b, c, "Simple page", In Proceedings of the Conference of Simpleness, 2010.

[2] ...

Projects:2021s1-13009 Investigation and Development of a Solar Charger with Wide Bandgap Devices

2021-04-09T04:47:42Z

A1705054: /* Project students */

[[Category:Projects]]
[[Category:Final Year Projects]]
[[Category:2021s1|106]]
Wide Bandgap (WBG) devices and ultra-wide bandgap (UWBG) devices (GaN and SiC) have recently emerged in response to the limitations of existing converters (limited power density, low and variable efficiency, and sensitivity to environmental conditions) and ever extending applications (renewable energy integration, energy storage, electric vehicles, and power grid transformation). For example, WBG devices offer up to 10x faster switching speeds than traditional silicon devices, hence, offering miniaturization, can function at higher operating temperatures without active cooling, have lower breakdown voltage and lower Ron.

== Introduction ==

In this project, a solar charger will be designed and developed to utilize the distinct benefits of WBG devices. The desirable characteristic features of the charger/converter are:
* Connected to higher voltage PV panels (approx. 60V).
* Wider operating voltage.
* Current rating: 40A.
* Operating voltage range: 12-16.5V.
* Non-Isolated step up/down operating under current limited voltage control mode.
* Higher frequency switching.
* High efficiency in a wide power range.
* High power density.
* High operating temperature.

=== Project team ===
==== Project students ====
* Tacob Jilley
[[File:Jake.jpg|115px|frameless|left]] 
* Bluncan Dack
[[File:Duncan.jpg|115px|frameless|left]] 

==== Supervisors ====
* A/Prof. Nesimi Ertugrul
* Dr. Said Al-Sawari
* Mr. Don Terrace (REDARC Electronics Pty Ltd)

== Background ==
* REDARC are interested in developing high performing solar charge controllers
* Opportunity to implement a MPPT-controlled DC-DC converter using established MPPT algorithm.

== Objectives ==
The Objectives of this project are:
* To develop a high-switching-frequency capable PWM DC-DC converter.
* To choose a Converter Topology for the converter.
* To model, test and decide on the wide-bandgap device to be used.

'''AND''' 

* Develop a MPPT solar regulator that fits the following requirements: 
** '''Input Interface (Solar Panel):'''
*** 24 – 60V range
*** PWM high-frequency switching (< 1 MHz)
*** Maximum input power controlled by REDARC MPPT algorithm
** '''Output Interface (12V Battery):'''
*** Regulated 14.5-16.5V
*** Regulated 40A
** '''Physical Requirements:'''
*** Size approx. that of A5 Diary (approx. 150x210mm)
** '''Component Requirements:'''
*** Must be able to withstand 60V and 40A whilst maintaining high switching frequency characteristics

== Method ==
====Identify Research Gap====
We hope to demonstrate that Wide Bandgap material can be used in commercial industry.
* Our project will contribute to the field of research demonstrating these devices’ potential for commercial applications and will further this by proposing a consumer product to REDARC; our prototype design.

====Planning====
Project Management
* Work Breakdown Structure created to define work packages
* Initial Risk Assessment completed
* Project timeline / Gantt Chart developed
Initial Risk Assessment:
* '''Safety as a Major Risk:'''
** COVID-19 Impact on Project
** Build and Test
*** ''Electric Shock (~580W maximum exposure)''
*** ''Mitigation: SOP to be written for planned task''
** Laboratory Hazards
*** ''Soldering Burns''
*** ''Electric Shock from Equipment''
* '''Schedule Risks to consider:'''
** Inadequate background knowledge and understanding of the context of research
*** ''Allow sufficient time to develop research''
** Implementation failed to achieve goals due to poor design
*** ''Allow sufficient time to develop design and consider alternatives''
* '''Risks to Cost:'''
** Initial Projection: evaluation board, variety of Wide Bandgap Devices
*** ''Material costs can be covered by the University.''
** REDARC sponsorship allows us to use industry-leading production facilities.
*** ''Risk to budget is considered a minor risk.''

== Gantt Chart ==

[[File:Gantt 1.png|500px|frameless|left]] 
[[File:Gantt 2.png|500px|frameless|left]] 
 

== Results ==

== Conclusion ==

== References ==
[1] a, b, c, "Simple page", In Proceedings of the Conference of Simpleness, 2010.

[2] ...

Projects:2021s1-13152 Terahertz coherent tomography for inspection of leaf moisture content in-situ

2021-03-16T04:47:39Z

A1705054: 1st Edit -- Add Summary