Study and Design of Multisource and Battery-free Energy Harvesting Architecture for AHM-Aeronautics Applications
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Date
2018-06
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Addis Ababa University
Abstract
This thesis attempts to study an innovative architecture for an efficient energy generator
which powers a wireless sensor network used for Aircraft security Monitoring. This
battery-free generator captures energy from its environment due to transient thermal
gradients as a main source, and vibrations as a secondary source allowing early biasing
of the generator and stores this energy in ultra capacitors. In this way, this multi-source
architecture benefits from the synergy between energy scavenging and harvesting:
vibration bring low but early and permanent energy. They also contribute to energy
harvesting d u ri n g cruise while thermal gradients have vanished.
This master’s thesis deals with the development of a power source based on Micro electrical
mechanical system thermoelectric generator. The identification of model parameters is based on
a measurement with special test bench. The practical implementation of theoretically outlined
principles is illustrated on jet engine control unit with the thermoelectric generator for the
electric power backup. The conclusion deals with an application of the presented technology
in an aircraft-specific field and the associated issues.
The proposed power source can be used for supplying of an aircraft-specific autonomous
sensor unit. System-level point of view on the autonomous sensor includes the sensor with data
acquisition and transmission, energy harvester (thermoelectric generator) with system voltage
of 3.3V,power rating of 100mW (corresponds to current consumption about 30mA); continuous
operation time: 30min; operating temperature range: -50 °C to +85 °C. Proposed thermoelectric
generator provides tens of milliwatts of the electric power on the voltage level of 3.3 V.
Various serial/parallel/serial-parallel combinations of 1-4 thermoelectric modules will be
tested consequently with a boost or buck boost converter.
Description
Keywords
Thermoelectric generator, energy harvesting, power management, Simulation modeling analysis, Aircraft application, Autonomous sensor node, Structural health monitoring, TEG, MEMS