Ricerc@Sapienza

Low-terahertz field transmission through a graphene/dielectric laminate (GDL) is investigated by modeling each graphene/dielectric bilayer (GDB) as a homogeneous uniaxial anisotropic medium. The effective medium approximation is applied to define the transverse effective complex conductivity of the GDB, which is expressed as a function of the thickness and permittivity of the dielectric layer, and of the graphene sheet conductivity.

The commercial routes interconnection in maritime world transport requires common criteria for the standardization of shore connection's rules in port areas. A brief focus on the part 1: High Voltage Shore Connection (HVSC) Systems (IEC-ISO-IEEE 80005-1) has been presented that is an example of global harmonization. This paper reports the cold ironing system issues due to the grounding systems. Several aspects must be taken into account as transferred touch potentials according to the workers safety for interferences due to the ground loops.

This paper analyzes the requirements for implementing an Energy Management Information System (EMIS) and proposes some methodology criteria and tools for its design, deployment and management. An EMIS combines software, hardware, and data modelling and processing to support people in their efforts to daily manage energy at any level (process, system, facility, and enterprise) year after year. An EMIS has to be designed and operated to fulfill national and international standards and to support improvements of energy performance within the organization.

Most of the power demand at Container Terminals (CT) is related to Ship to Shore (STS) cranes. These cranes work simultaneously together for loading and unloading container. This issue causes the peak demand increase significantly. Considering the STS group crane's activity to move containers (from ship to shore and vice versa), finding the best delay time between STS cranes can play an important role to reduce the total power demand. The peak shaving strategy which has been used in this paper is Demand Side Management (DSM).

Probabilistic Modeling of electric load is a key aspect for the study of distribution system. Characteristics of electric load patterns are extracted by using appropriate probabilistic model. Characterization of aggregated load pattern is very helpful for the system operator or aggregator at microgrid level. Inter-temporal evaluation of electric load patterns is a challenging task. Intertemporal load patterns behavior of residential consumers are extracted by using Weibull distribution and generalized regression neural network.

A non-inverting, single switch with voltage lift switched inductor module high gain configurations of the modified SEPIC converter is discussed in the paper for high voltage and low current renewable energy applications. Based on the VLSI module position, modified SEPIC converter are classified into four configurations as MSCVLSI - XLL, MSCVLSI - L YL, MSCVLSI - LLZ and MSCVLSI - XYZ. The goal of the proposed research is to design a converter with high voltage gain ratio.

The paper presents a vector control with two cascaded loops to improve the properties of Dynamic Voltage Restorer (DVR) to minimize Voltage Sags on the grid. Thereby, a vector controlled structure was built on the rotating dq-coordinate system with the combination of voltage control and the current control. The proposed DVR control method is modelled using MATLAB-Simulink. It is tested using bal-anced/unbalanced voltage sags as well as fluctuant and distorted voltages. As a result, by using this controlling method, the dynamic characteristics of the system have been improved significantly.

Transmission Line (TL) theory was proposed in the past to model field propagation through conductive shields and it is currently widely used. Recently, this theory has been revisited to investigate the shielding of near-field sources by analytical and numerical techniques. The recently developed methods are here applied to analyze simple configurations of near field shielding.

This paper deals with the application of the recently developed artificial material single layer method to efficiently model a thin conductive anisotropic material using commercial software tools based on the finite element method. In the present work the method is applied to the prediction of the magnetic field in an electric vehicle made with metal or carbon fiber reinforced polymer (CFRP) bodyshell and equipped with a stationary wireless power transfer system. Simple tests are presented to show the performance of the method.

In this paper, the recently developed artificial material single layer (AMSL) method is applied to model a conductive shield for wireless power transfer (WPT) systems. This method is very efficient in the simulation of a complex setup, such as that occurring in the analysis of the magnetic field produced by a WPT system installed in an electrical vehicle (EV). In this application, a critical issue is the efficient and accurate modeling of conductive shields to evaluate the near field magnetic field.