Avaliação energética de estratégias de gestão de operação em veículos híbridos elétricos plug-in

Hugo Quitério Ferreira

Key information

Authors:

Hugo Quitério Ferreira (Hugo Quitério Ferreira)

Supervisors:

Gonçalo Nuno de Oliveira Duarte (Gonçalo Nuno de Oliveira Duarte); Patrícia De Carvalho Baptista (Patrícia De Carvalho Baptista)

Published in

23 de julho de 2020

Abstract

The aim of this work was to assess control strategies of the electric motor (EM) and internal combustion engine (ICE) in the operation of a plug-in hybrid vehicle (PHEV). For that purpose, two plug-in hybrid electric vehicles (PHEV), “A” and “B”, were monitored during two trips and their dynamic data, energy consumption and emissions were recorded. Models were created to predict the operation of both ICE and EM. A matrix of operating zones was created gathering data of each second of the trip according to the powertrain used at each moment. The developed analysis allowed to estimate energy consumption and emissions in charge depleting (CD) and charge sustaining (CS) modes. Vehicle A is more dependent on the ICE, using it in 27% of the route in CD and 84% on CS, compared to only 4% in CD and 67% in CS on vehicle B. Consequently, energy consumption was higher for vehicle A (2.7 l/100km on CD and 7.2 l/100km on CS) when compared to B (0.2 l/100km on CD and 4.4 l/100km). Carbon dioxide emissions followed similar pattern, being CS emissions greater than the European target for 2021 of 95 g/km (A: 171 g/km, B: 103 g/km). Hydrocarbons and nitrogen oxides were more emitted in CD as there were more cold starts from the ICE. Vehicle A was the least economical option accounting for fuel and electricity, ranging from 0.078 to 0.110 € / km, compared to 0.037 to 0.068 €/km for B, for the distances and charging options studied.