Modeling and optimization of hybrid electric vehicles

Özden, Burak Şamil
The main goal of this thesis study is the optimization of the basic design parameters of hybrid electric vehicle drivetrain components to minimize fuel consumption and emission objectives, together with constraints derived from performance requirements. In order to generate a user friendly and flexible platform to model, select drivetrain components, simulate performance, and optimize parameters of series and parallel hybrid electric vehicles, a MATLAB based graphical user interface is designed. A basic sizing procedure for the internal combustion engine, electric motor, and battery is developed. Pre-defined control strategies are implemented for both types of hybrid configurations. To achieve better fuel consumption and emission values, while satisfying nonlinear performance constraints, multi-objective gradient based optimization procedure is carried out with user defined upper and lower bounds of optimization parameters. The optimization process is applied to a number of case studies and the results are evaluated by comparison with similar cases found in literature.


Sizing of a series hybrid electric vehicle
Arıkan, Fuat Remzican; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2019)
The main aim of this work is to investigate whether a cost competitive hybrid electric vehicle can be designed and under what conditions this can be achieved. For this purpose, first a light commercial vehicle is considered. Its model is developed in ADVISOR environment in Matlab and verified by comparing with the official tests of the vehicle, acceleration and NEDC fuel consumption, namely. Following that, electrical components are searched for rating, dimension, weight and cost through the literature and ...
Some optimal control problems in electric vehicles
Ahıska, Kenan; Leblebicioğlu, Mehmet Kemal; Özgören, Mustafa Kemal; Department of Electrical and Electronics Engineering (2016)
Conventional internal combustion engine-powered vehicles are the mainstream mean in nowadays private transportation. However, their fuel consumption results in environmental problems. Electric vehicles, on the other hand, have zero pollutant emission and benefit from high highly-efficient electric motor technology. These make the electric vehicles as the most promising alternative in private transportation. However, limitations in current battery technology aggravate the widespread usage of electric cars. T...
Multi-objective charging scheduling utilizing electric vehicle load models
Güzel, İven; Göl, Murat; Department of Electrical and Electronics Engineering (2022-1)
Utilization of electric vehicle (EV) load models can improve the performance of smart charging strategies, which increase the reliability of the grid by harnessing the flexibility of EV loads. This thesis presents methods for utilizing EV load models in real time stochastic charging control with single and finite system-time horizons. First, the drivers’ load models are found with kernel density estimation. A single system time horizon coordinated charging control algorithm is devised to ensure each EV is c...
Efficiency Optimization of a Direct Torque Controlled Induction Motor used in Hybrid Electric Vehicles
Sergaki, Eleftheria S.; Moustaizis, Stavros D. (2011-09-10)
The main contribution of this paper is the application of Loss Minimization control algorithm of a three-phase squirrel-cage induction motor which is used in parallel with an internal combustion engine (ICE), in hybrid electric vehicles (HEY). During steady state operation of the electric motor, the electric motor's optimal motor flux profile minimizes the electric motor losses and maximizes the overall HEN efficiency, hybridization factor (HF). During steady state operation of the direct torque controlled ...
Assessment of impacts of electric vehicles on low voltage distribution networks in Turkey
Temiz, Armağan; Güven, Ali Nezih; Department of Electrical and Electronics Engineering (2015)
The number of Electric Vehicles (EVs) has reached a substantial value all over the globe due to economic and environmental factors. The increasing penetration of EVs to the distribution grids urges the requirement to investigate the impacts of EVs on the planning and operation of distribution networks. Despite the fact that there are numerous studies discussing the impacts of EVs on distribution grids, a particular study concerning the Turkish distribution networks does not exist. Therefore, this study focu...
Citation Formats
B. Ş. Özden, “Modeling and optimization of hybrid electric vehicles,” M.S. - Master of Science, Middle East Technical University, 2013.