![Page 1: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/1.jpg)
Integrated Thermoelectric Photovoltaic Renewable Energy System
Luocheng Wang, Jonathan Weiss, Antony Xenophontos
Advanced Power Electronics and Electric Drives Lab (APEDL)ECE Department and Center for Clean Energy Engineering
Team 189Adviser: Prof. Ali Bazzi
Senior Design Proposal Presentation10/16/2013
![Page 2: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/2.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectrics• Physical Configurations & Limitations• Execution Plan & Service Learning• Questions
![Page 3: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/3.jpg)
Project Overview
Currently, a major concern with sustainable energy sources is their low efficiencies Photovoltaic Solar Panel n ~ 15-20% Thermoelectric Generator n ~ 5-10%
Solar and thermal energy sources are usually available simultaneously.
The goal is to develop a more efficient system by harvesting both of these energy sources.
![Page 4: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/4.jpg)
Statement of Need
The main objective of our project is to analyze, model and evaluate a hybrid PV & TEG system.
We plan on doing this by: Testing and comparing TEGs and solar panels individually,
then as various configurations Series Parallel Individual
Develop mathematical models for each configuration Finally, determine and build the most efficient integrated
system
![Page 5: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/5.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectrics• Physical Configurations & Limitations• Execution Plan & Service Learning• Questions
![Page 6: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/6.jpg)
Applications
Vehicles Solar cells on roof TEGs under the hood/near exhaust
House Solar Panels on roof Indoor/Outdoor temperature difference
Naval Vessels A lot of space for Photovoltaic arrays as auxiliary power supply TEGs on hull for exterior/interior temperature difference
![Page 7: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/7.jpg)
System Description
![Page 8: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/8.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectric• Physical Configurations & Limitations• Execution Plan & Service Learning• Questions
![Page 9: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/9.jpg)
Photovoltaics
Solar cells convert solar energy to electrical energy using the photoelectric effect.
Sh
SAKTIRVq
OL RIRVeIII
S
)1()(
UCONN APDL Lab
![Page 10: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/10.jpg)
Photovoltaics – Cont.
IV curve (black) and Power Voltage curve (green) for photovoltaics from Solartech Power Inc. SPM030P Specification.
The power curve from the solar cell has a maximum point at which the cell is most efficient.
Maximum Power Point Tracking (MPPT) is the method to detect this point.
![Page 11: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/11.jpg)
Thermoelectrics
TEGs draw energy from the heat difference between the two plates, using the Seebeck effect.
TGV
IGrGVV
“Thermoelectric Develoments for Vehicular Applications” – John W. Fairbanks
![Page 12: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/12.jpg)
Thermoelectrics – Cont.
IV curve (black) and Power Voltage curve (blue) for TEG from Solidate Power Generator TEG1-12611-6.0 Specification.
Thermoelectric modelling also includes a maximum power point
MPPT is much easier for TEGs based on the shape of the power curve.
![Page 13: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/13.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectric• Physical Configurations & Limitations• Execution Plan & Service Learning• Question
![Page 14: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/14.jpg)
System Configuration
• We will have to determine a way to mount the TEGs onto the Solar Panels to take advantage of the excess heat.
• Integrated configuration-• TEG on back of solar panel• TEG under partial shading• TEG under focused light
![Page 15: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/15.jpg)
System ConfigurationTEGs on a Solar Panel
Due to solar panels low efficiency, a lot of energy is wasted as either reflected light or heat.
Placing TEGs on the back of the solar panel can take advantage of this waste heat, but the panel temperature rise is very limited (~3 oC)
Possible solutions: Use heat absorbent material between the solar cells to
increase power from the TEGs Set requirements for new TEG designs Have separate heat and light sources
![Page 16: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/16.jpg)
System ConfigurationHot Spots
Solar Panels are solar cells in series, so they all share current under normal conditions.
An area of shading over a solar panel results in current dropping in the shading area.
This causes voltage to rise in the unshaded area.
Voltage rising leads to reverse bias in the same area, known as a ‘Hot Spot’.
![Page 17: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/17.jpg)
System ConfigurationFocusing Sunlight
Focusing sunlight is a way to increase incoming solar energy.
This will increase the temperature difference on the TEG.
Thus, the total power will be increased under this configuration.
![Page 18: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/18.jpg)
System Limitations
This system is entirely reliant on environmental factors. Night, Clouds, etc. Seasonal/Topographical temperatures
The system must remain affordable Extra power afforded by the system must outweigh extra cost of
construction.
Efficiency advantage of the integrated system The configuration must lead to a higher efficiency than either of
the individual components.
![Page 19: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/19.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectric• Physical Configurations & Limitations• Execution Plan & Service Learning• Questions
![Page 20: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/20.jpg)
Timeline
09/30/13- 10/12/13
Literature Review
Modelling
10/13/13- 10/27/13
10/27/13- 11/10/13
11/11/13- 11/25/13
11/26/13- 12/09/13
12/10/13- 12/17/13
Individual Configuration Testing
Begin Physical Configuration Design
Component Selection
![Page 21: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/21.jpg)
Service Learning
As part of our Senior Design Project we also plan to take part in Service Learning.
We will present our completed project and related energy efficiency concepts to one or more local high schools.
This will raise awareness on the subject of sustainable energy, as well as the value of this research.
Will add a new dimension of public outreach to our project.
![Page 22: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/22.jpg)
Outline
• Project Overview & Statement of Need• Applications & System Description• Overview of Photovoltaics & Thermoelectric• Physical Configurations & Limitations• Execution Plan & Service Learning• Questions
![Page 23: Integrated Thermoelectric Photovoltaic Renewable Energy System](https://reader035.vdocuments.us/reader035/viewer/2022081512/5681691a550346895de03b5d/html5/thumbnails/23.jpg)
Questions?