| Abstract |
Limited autonomy allowed by available batteries imposes seeking another solutions for electric road
vehicles. Series hybrid electric solutions including a thermal motor running an electric alternator or a
fuel cell appear as alternatives to be considered for autonomy improvement. A correct dimensioning of
the several enrolled components on the driven powertrain allows an optimised solution in the use of
the power source. This paper proposes a methodology using simulation and experimental results to be
used as design tool for the driven powertrain components. It is shown that in a series hybrid electric
vehicle with a power source running at an optimised constant power value, the intermediate energy
storage system (batteries or other) complements the instantaneous power delivery. It is verified that
knowledge of the vehicle daily use is important for the proposed optimization. More, this concept
allows considering a lower value for power source and, consequently, a vehicle presenting a lower
consumption and a better overall efficiency, reducing vehicle environmental impact and running costs. |
