Development of low power DC-DC converter for thermo-electric generator

Thermoelectric module which available commercially is not appealing because of the low power conversion efficiency and looks unattractive. In order to increase efficiency, high efficient low power conversion system is need for thermoelectric modules to achieve it. The power conversion system plays...

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Main Author: Kuthubudeen, Haja Najubudeen
Other Authors: Tseng King Jet
Format: Theses and Dissertations
Language:English
Published: 2016
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Online Access:http://hdl.handle.net/10356/68987
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-689872023-07-04T16:38:38Z Development of low power DC-DC converter for thermo-electric generator Kuthubudeen, Haja Najubudeen Tseng King Jet School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Thermoelectric module which available commercially is not appealing because of the low power conversion efficiency and looks unattractive. In order to increase efficiency, high efficient low power conversion system is need for thermoelectric modules to achieve it. The power conversion system plays an important role in improving the efficiency of thermoelectric power generation.Thermoelectric generator module characterises enabled as to develop efficient Low Power DC-DC converter. DC-DC converters are used as interface between TEG modules and load.which in turn produce maximum power and optimised by means of MPPT algorithm using microcontroller. SEPIC is a variant type of buck-boost converter that is also able to produce output voltage either higher or lower than its input voltage depending on the switching duty cycle.Removes the problem of unable to have a continuous transfer of energy between the load and the source. Benefits of lower chance of device failure or overheating as well as having low noise operation, enabling higher efficiency conversion. It consists of minimal active components, a simple controller and clamped switching waveforms which can provide low noise operation. If the TEG modules were directly connected to the load, operating point would be set by the load impedance, which would usually result in TEGs not operating at their Maximum Power Point (MPP).Control strategies are developed to control these DC-DC converters, to ensure the modules are always operated at their maximum power point, under conditions of varying temperature and load. MPPT algorithm matches the virtual load seen by the TEG to its actual internal resistance by changing the duty cycle of the converter: Maximum Power Transfer Theorem. For marine engines, exhaust gas temperature is very consistent. So a simple, but effective tracking algorithm was chosen (Perturb and Observe algorithm). When temperature difference is not present, we can possibly provide integrated storage solution. For battery charging application Buck, Boost or Buck-Boost converter can be used. DC-DC converter charges a battery with the help of buck-boost converter. Master of Science (Power Engineering) 2016-08-22T07:43:18Z 2016-08-22T07:43:18Z 2016 Thesis http://hdl.handle.net/10356/68987 en 61 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Kuthubudeen, Haja Najubudeen
Development of low power DC-DC converter for thermo-electric generator
description Thermoelectric module which available commercially is not appealing because of the low power conversion efficiency and looks unattractive. In order to increase efficiency, high efficient low power conversion system is need for thermoelectric modules to achieve it. The power conversion system plays an important role in improving the efficiency of thermoelectric power generation.Thermoelectric generator module characterises enabled as to develop efficient Low Power DC-DC converter. DC-DC converters are used as interface between TEG modules and load.which in turn produce maximum power and optimised by means of MPPT algorithm using microcontroller. SEPIC is a variant type of buck-boost converter that is also able to produce output voltage either higher or lower than its input voltage depending on the switching duty cycle.Removes the problem of unable to have a continuous transfer of energy between the load and the source. Benefits of lower chance of device failure or overheating as well as having low noise operation, enabling higher efficiency conversion. It consists of minimal active components, a simple controller and clamped switching waveforms which can provide low noise operation. If the TEG modules were directly connected to the load, operating point would be set by the load impedance, which would usually result in TEGs not operating at their Maximum Power Point (MPP).Control strategies are developed to control these DC-DC converters, to ensure the modules are always operated at their maximum power point, under conditions of varying temperature and load. MPPT algorithm matches the virtual load seen by the TEG to its actual internal resistance by changing the duty cycle of the converter: Maximum Power Transfer Theorem. For marine engines, exhaust gas temperature is very consistent. So a simple, but effective tracking algorithm was chosen (Perturb and Observe algorithm). When temperature difference is not present, we can possibly provide integrated storage solution. For battery charging application Buck, Boost or Buck-Boost converter can be used. DC-DC converter charges a battery with the help of buck-boost converter.
author2 Tseng King Jet
author_facet Tseng King Jet
Kuthubudeen, Haja Najubudeen
format Theses and Dissertations
author Kuthubudeen, Haja Najubudeen
author_sort Kuthubudeen, Haja Najubudeen
title Development of low power DC-DC converter for thermo-electric generator
title_short Development of low power DC-DC converter for thermo-electric generator
title_full Development of low power DC-DC converter for thermo-electric generator
title_fullStr Development of low power DC-DC converter for thermo-electric generator
title_full_unstemmed Development of low power DC-DC converter for thermo-electric generator
title_sort development of low power dc-dc converter for thermo-electric generator
publishDate 2016
url http://hdl.handle.net/10356/68987
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