Affiliation:
1. Nanjing University of Science and Technology, School of Mech
Abstract
<div class="section abstract"><div class="htmlview paragraph">In this work, in order to reduce the overall cost of the micro-gas turbine range
extended electric vehicle (MGT-REEV), the energy management strategies of the
micro gas turbine range extender were discussed. The overall vehicle cost
includes equivalent fuel cost and battery loss cost. We defined a cost function
to qualify the overall vehicle cost and three rule-based energy management
strategies were built and compared. The REEV model was built based on the Cruise
platform, energy management strategies were built based on Matlab. We discussed
thermostat strategy, the constant speed multi-point strategy and optimal curve
multi-point strategy under Worldwide Harmonized Light Vehicles Test Cycle
(WLTC). The results showed that the constant multi-point strategy had a better
effect on reducing the vehicle overall result compared with the other two
control. Finally, the multi-objective genetic algorithm based on Isight software
was used to optimize the selection of multiple operating points to optimize the
vehicle overall cost. The optimized constant speed energy management strategy
reduced the overall cost by 6.08% compared to the thermostat strategy. In brief,
through the above comparisons and optimization, the influences of different
energy management strategies on fuel consumption and battery loss were revealed,
which provides a good reference for engineering applications.</div></div>