Mohamed Abdel Monem

Modeling and analysis of a hybrid PV/Second-Life battery topology based fast DC-charging systems for electric vehicles

Integration of vehicle charging infrastructures into the existing tram networks has gained a strong interest to tackle the lack of the charging infrastructures for Electric Vehicles (EVs) and Plug-in Hybrid Electric Vehicles (PHEVs). This article proposes a hybrid PV/Second-Life (SL) battery system that cannot only be used as a fast DC charging system for EVs or PHEVs, but also as an energy-storage system for tram network towards more green mobility. In this paper, the proposed hybrid PV/Second-Life (SL) battery system is designed and investigated in detail. The dynamic models of the PV and SL battery are developed and analyzed by using Matlab/Simulink. To efficiently integrate the proposed system into the tram network, advanced multiport interleaved power-converter (MIPC) and its control strategy are developed. Moreover, the simulation results are shown in this article to verify the dynamic performance of the proposed topology in different operating modes.

Comparative study of different multilevel DC/DC converter topologies for second-life battery applications

This paper is part of a research project, which aims to investigate the possibilities of using the second life batteries after their replacement from plug-in electric vehicles (PHEVs), hybrid electric vehicles (HEVs) and battery electric vehicles (EVs) for smart grid applications. Batteries which are used for vehicular service cannot be used once that the capacity becomes less than 70%-80% [1]. The remaining capacity of the battery can be utilized for stationary applications during peak load hours and to reduce the environmental pollution. These batteries are defined as second life batteries. In these applications, the power electronic converters (PECs) play an important role in the development of high performance integrated systems. It means that the performance of the second life batteries mainly depends on the characteristics of the PECs, which are utilized to achieve the integration of the second life batteries with the smart grid. Therefore, this paper represents a comparative evaluation of different multilevel DC/DC converter topologies that can be used to connect the second life batteries to smart grid. Furthermore, the advantages and drawbacks of the most popular multilevel DC/DC converter (MLDC) topologies are presented in detail. In this paper, a selected harmonic elimination (SHE) technique has been used to realize the control system of the multilevel DC/DC converter, and its influence on the performance of each battery module is analyzed. These topologies are designed and verified by using MATLAB/Simulink environment.

An evaluation study of current and future Fuel Cell Hybrid Electric Vehicles powertrains

The powertrain control strategy and component sizing can significantly influence the vehicle performance, cost and fuel economy. This paper presents an evaluation study of the current and future Fuel Cell Hybrid Vehicles (FCHEVs) powertrains from the point of view of the fuel economy, volume, mass and cost. In this research, different FCHEV powertrains (such as Fuel Cell/Supercapacitor (FC/SC), Fuel Cell/Battery (FC/B), and FC/SC/B) and different control strategies are designed and simulated by using Matlab/Simulink. In this paper, two standard driving cycles (NEDC and FTP75) are used to evaluate the fuel consumption. Within this study, two control strategies based on the knowledge of the fuel cell efficiency map are implemented to minimize the hydrogen consumption of the FCHEV powertrains. These control strategies are control strategy based on Efficiency Map (CSEM) and control strategy based on Particle Swarm Optimization (CSPSO). Furthermore, a comparative study of different FCHEV powertrains is provided for adequately selecting of the proper FCHEV powertrain, which could be used in industrial applications.