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P12441: Thermoelectric Power Pack for Next Generation Stove

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P12441: Thermoelectric Power Pack for Next Generation Stove. Andrew Phillips – Project Manager Colin McCune – Lead Engineer Lauren Cummings – Electrical Engineer Xiaolong Zhang – Cost Engineer. Background. 3 billion people use open fires and inefficient stoves regularly

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Presentation Transcript
slide1

P12441: Thermoelectric Power Pack for Next Generation Stove

  • Andrew Phillips – Project Manager

Colin McCune – Lead Engineer

Lauren Cummings – Electrical Engineer

XiaolongZhang – Cost Engineer

background
Background
  • 3 billion people use open fires and inefficient stoves regularly
    • Requires large amounts of fuel
      • Damage to ecosystem
slide3

Haiti

  • Deforestation
    • Soil erosion
    • Decrease in agricultural yields
    • Landslides
    • Running out of fuel
  • Need for more fuel-efficient stoves
    • Add oxygen to combustion process

Haiti

Dominican Republic

need for power
Need for Power
  • Haiti has a history of destructive earthquakes
    • No power grid and no landlines
    • Cell phones and radios for communication
      • Difficult to charge
customer needs
Customer Needs

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

engineering specifications
Engineering Specifications

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

engineering specifications cont
Engineering Specifications cont.

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

engineering specifications cont1
Engineering Specifications cont.

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

system architecture
System Architecture

Maximum Power Point Tracker (MPPT) Network

Power Storage and Distribution

slide10
MPPT

Maximum Power Point Tracker (MPPT) Network

slide11

Maximum Power Point Tracker (MPPT)

  • Allows efficient power transfer from TEG to system
power distribution
Power Distribution

Power Storage and Distribution

battery management
Battery Management
  • To prevent overcharging
    • System will stop charging battery
  • The battery must always have enough power to run the system during start-up
    • To prevent overdraw
      • First USB is disabled
      • Then fan is disconnected
battery protection s ystem
USB and Fan disconnect from battery when terminal voltage reaches 5.8 VBattery Protection System

Battery disconnect from MPPT and TEG when terminal voltage reaches 6.4 V

The voltage at the terminal of the switch (yellow) and the voltage at the input to the switch (blue)

cat procedure
CAT Procedure

Step 1: Connect battery and power on circuit.

Step 2: Run system until USB is disabled.

Step 3: Run system until fan is disconnected.

Step 4: Attach power pack to TEG.

Step 5: Run system until powered by TEG,

Step 6: Run system until fan is reconnected.

Step 7: Run system until USB is re-enabled.

Step 8: Run system until battery is disconnected.

Step 9: Disconnect power pack from TEG.

Step 10: Connect cell phone to USB output.

Step 11: Charge cell phones until USB is disconnected.

Step 12: Power off power pack.

project status
Project Status

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

project status cont
Project Status cont.

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

project status cont1
Project Status cont.

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

project status cont2
Project Status cont.

*Most important needs

Importance Scale: 1 - Low Importance, 2 - Moderate Importance, 3 - High Importance

future work
Future Work
  • Complete design and implementation of the MPPT.
  • Decrease system cost.
  • Increase the efficiency of the DC-DC converters.
  • Complete system PCB layout, and have PCB layout.
  • Manufacture and test enclosure.
  • Send system to Haiti for field testing.
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