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High-efficiency step-down converter for on-board thermoelectric generators on heavy duty vehicles
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion. (Thermoelectric Energy Conversion)ORCID iD: 0000-0003-0933-6945
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.ORCID iD: 0000-0002-1755-1365
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Today's combustion engines have low efficiency and a large amount of useful energy converts to heat as waste in different type of vehicles. Improving the dynamics of the car body, injection system, the shape of the internal engine components and manipulating the fuel compositions have had influence on fuel economy, but still less than 50% of energy in the fuel is converted to useful mechanical power. Since the lost energy escapes through the exhaust system as heat, taking advantage of thermoelectricity, part of that energy can be converted to useful electrical energy, improving the overall efficiency. However, the output voltage from a thermoelectric generator is a function of hot and cold side temperature and since, the electrical system of the vehicle operates with constant voltage, the use of a power converter is necessary. In this paper, simulation and experimental results of such a high-efficiency converter(94-96%), designed for thermoelectric generators on heavy duty vehicles is presented and discussed.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015. 869-873 p.
Keyword [en]
combustion, electric vehicles, engines, thermoelectric conversion, combustion engines, exhaust system, fuel economy, heavy duty vehicles, high-efficiency step-down converter, on-board thermoelectric generators, power converter, thermoelectricity, Switches, Vehicles, DC-DC converter, power management, synchronous converter, thermoelectric energy harvesting, thermoelectric generator, waste heat recovery
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering; Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-172928DOI: 10.1109/ICPE.2015.7167884ISI: 000382948300127Scopus ID: 2-s2.0-84961956848OAI: oai:DiVA.org:kth-172928DiVA: diva2:850778
Conference
Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on
Funder
Swedish Energy Agency, 76467
Note

QC 20150904

Available from: 2015-09-02 Created: 2015-09-02 Last updated: 2016-10-24Bibliographically approved

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Arash, RissehHans-Peter, Nee

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