Technical Paper
Simulations of TEG-Based Vehicle Power System’s Impact on the Fuel Economy of Hybrid and Conventional Vehicles
2016-04-05
2016-01-0900
About 40% of the fuel energy in an internal combustion engine is lost as exhaust heat. Thermoelectric generators (TEGs) can recover the heat energy in the exhaust gas, improving the fuel efficiency of the vehicle and reducing emissions. In this study, a method of setting up TEG model using real testing data is proposed; model of a TEG-based vehicle power system is built; and the potential of the TEGs to improve the fuel efficiency of conventional vehicles and hybrid electric vehicles (HEVs) is examined by integrating the TEG into the vehicle power bus as a second generator. Firstly, output power model of one thermoelectric module is constructed in MATLAB/Simulink according to testing data, which is convenient and convincing. Then the model of TEG system is built using Matlab/Simulink software, taking the temperature distribution of the heat exchanger into consideration.
