Analytical optimal solution to the energy management of hybrid electric vehicles is interest from theoretical and practical perspectives. Particularly, effort has been made derive analytical problem for series using Pontryagin's minimum principle (PMP). However, admissibility system input was not fully explored in determining candidates. In this paper, same found by partitioning positive power ...

This paper proposes a hybrid optimization method for optimal allocation of wind turbines (WTs) that combines genetic algorithm (GA) and market-based optimal power flow (OPF). The method jointly maximizes net present value (NPV) related to WTs investment made by WTs’ developers and social welfare (SW) considering different combinations of wind generation and load demand over a year. The GA is va...

Complies with the regulations of this University and meets the accepted standards with respect to originality and quality. Advanced propulsion technologies such as hybrid electric vehicles (HEVs) have demonstrated improved fuel economy with lower emissions compared to conventional vehicles. Superior HEV performance in terms of higher fuel economy and lower emissions, with satisfaction of drivin...

If hybrid vehicles are to be judged in a fair way, the whole system has to be taken into consideration. This includes not only the specific vehicle with its software, but also the driver and the environment in which the vehicle is driven. Simulation is one way to do this. City buses give an extra potential for hybrid systems, if the software takes the specific route and time table into consider...

Power management strategies play a key role in the design process of hybrid electric vehicles. Electric Assist Control Strategy (EACS) is one of the popular power management strategies for hybrid electric vehicles (HEVs). The present investigation proposes a new framework to advance the EACS. Dynamic Programming method is applied to an HEV model in several drive cycles, and as a result, some op...

Hybrid electric vehicles (HEVs) offer many advantages, such as high fuel economy, low emissions, and silent operation. In HEVs, there are two or more different voltage buses for different purposes of the vehicle operation. There are needs of galvanically isolated bidirectional DC-DC converter to link different DC voltage bus and transfer energy back and forth. For example, on of the DC-DC conve...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Antti Lajunen Name of the doctoral dissertation Improving the Energy Efficiency and Operating Performance of Heavy Vehicles by Powertrain Electrification Publisher School of Engineering Unit Department of Engineering Design and Production Series Aalto University publication series DOCTORAL DISSERTATIONS 125/2014 Field of resea...