0000000001104897
AUTHOR
G. Ala
Radial Basis Functions for Electronic Devices Behavioral Modeling
In this paper a black-box identification technique based on the radial basis functions is used in developing global dynamic behavioural models of electronic devices from measured transient responses. This approach allows to reproduce a non-linear dynamic model of the device under modelling automatically taking into account all the physical effects relating input and output data, from measured waveform only: no knowledge of the internal structure is needed. Original application related to a bipolar junction transistor is reported and validated by comparing simulation results with measured data.
FILTRI EMI COMPATTI NEI CONVERTITORI ELETTRONICI DI POTENZA
The goal of the research recently started is to create efficient EMI filters compact that allow to obtain converters with low dimensions and economically competitive.
Smoothed Particle Electromagnetics Modelling on HPC-GRID Environment
In this paper a meshless approach on a high performance grid computing environment to run fast onerous electromagnetic numerical simulations, is presented. The grid computing and the message passing interface standard have been employed to improve the computational efficiency of the Smoothed Particle Electromagnetics meshless solver adopted. Applications involving an high number of particles can run on a grid computational environment simulating complex domains not accessible before and offer a promising approach for the coupling of particle models to continuous models. The used meshless solver is straightforward to program and fully parallelizable. The results of the parallel numerical sch…
Partial discharges characteristics during load transients in an HVDC model cable
The occurrence of Partial Discharges (PD) in HVAC cables is widespread considered as one of the most important concerns for the stability of the insulation. To date, the role of PD in the ageing and definitive fault of HVDC cables has been poorly investigated. This is mainly due to some practical difficulties in the performing of the measurements. Compared to the PDs occurring under AC stress, the higher inception voltages and the lower repetition rates, obtainable under DC voltage, make the exclusion of the measurement noise more difficult. This paper is focused on the study of the characteristics of the PDs occurring in an artificial defect located in proximity of the outer dielectric' su…
ADVANCED BIO-ELECTROMAGNETIC NUMERICAL MODELLING AND ICT FOR HUMAN BRAIN RESEARCH
Functional imaging is used in the research area neurological, neurophysiology and cognitive psychology, for the diagnosis of diseases metabolic and for the detection of thin / squamous lesions (eg Alzheimer's disease) and for the development of neural interfaces (brain-computer interfaces - BCI).
EFFETTI DEL CAMPO MAGNETICO ELF SU ALCUNE SPECIE VEGETALI DI INTERESSE ORNAMENTALE ED ECOLOGICO
Diversi studi riportati nella letteratura scientifica di riferimento, effettuati sia in vivo che in vitro, hanno evidenziato effetti positivi determinati dall’esposizione dei tessuti vegetali al campo magnetico ELF
Hybrid Solar-RF Energy Harvesting Mechanisms for Remote Sensing Devices
Recently, sensor networks effectively provide many applications in different fields. The deployment of mobile sensors, unmanned aerial vehicles is to reduce the burden of energy consumption for sensor nodes. However, saving energy in such networks is still a critical issue. This paper investigates the performance of a hybrid RF-Solar harvesting circuit for remote sensing devices. The harvesting circuit can simultaneously harvest power from solar and radio frequency (RF) sources readily available in the surrounding environment. The proposed work builds RF and solar harvester circuits to create hybrid harvesting circuits for all elements in the combined sensing networks. The stand-alone RF ha…
Modelling of Electronic Devices using Radial Basis Functions for EMC Evaluation
In this paper a black-box identification technique based on the radial basis functions (RBF) is used in developing global dynamic behavioural models of electronic devices from measured transient responses. RBF allow to reproduce a non-linear dynamic model of the device under modelling (DUM) automatically taking into account all the physical effects relating input and output data, from measured waveform only: no knowledge of the internal structure is needed. Suitable parameters have to be evaluated by using selected voltage/current identification signals that allow to build up the global model of the DUM. The development of such global model constitutes the first step for electromagnetic com…
Experimental investigation and characterization of innovative bifacial silicon solar cells
The interest towards bifacial PV technology has increased over the last years, due to its potential capability of obtaining higher efficiencies with respect to traditional monofacial cells. Thus, the aim of this work is to present an experimental investigation on an innovative photovoltaic technology, such as the bifacial solar cells based on monocrystalline substrate. This analysis is mainly based on the determination of the current density/voltage, power density/voltage, External Quantum Efficiency (EQE) and Laser Beam Induced Current (LBIC) characterization. Interesting results are presented and discussed, demonstrating that the bifacial silicon solar cells can be a very promising techno…