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We propose and develop an advanced signal processing technique that, combined with micromagnetic simulations, is able to deeply describe the non-stationary behavior of spin-torque oscillators, both in terms of time domain and spatial distribution of the magnetization dynamics. The Hilbert-Huang Transform is used for the identification of the time traces of each oscillation in a multimode excitation...
The design of electrical power distribution system of Marinas requires a special architecture to supply the distributed loads constituted by pleasure crafts. It must also provide for solutions to possible stray currents circulating through the earth and the water that can cause electrical hazards and corrosions. The authors suggest the adoption of a distribution operated at 1 kV and the TN-island...
The main protection against electric shock is the “active” measure based on preventing the persistence of the electrical hazards limiting the time duration of the risk exposure to the electric contact. For the electrical risk assessment, the analysis of the risk exposure is treated by an innovative approach in analogy with collisions problems. Therefore, in practice the protection against the indirect...
This paper introduces a micromagnetic model able to characterize the magnetization dynamics in three terminal magnetic tunnel junctions, where the effects of spin-transfer torque and spin-orbit torque are taken into account. Our results predict that the possibility to separate electrically those two torque sources is very promising from a technological point of view for both next generation of nanoscale...
The paper presents a project, I-ECO, Inductive Charging Station for Ebike Clever Mobility. It consists of the development of integrated high-tech components for the design and implementation of eco-friendly cycle-stations making use of inductive charging systems or so-called ‘wireless’, with integrated photovoltaic generation systems, for the' power assisted bicycles. In particular, the project aims...
In this work a possible interconnection in MV between two DSO located in two bordering European countries is analyzed. Legal concerns regarding the connection are treated both at European and at national level.
The possibility to produce materials for energy storage and piezoelectric sensor applications through the electrospinning technique is here investigated. Electrospun lithium-ion battery separators, piezoelectric sensors are characterized and tested in order to exhibit the outstanding properties of such nanostructured materials which can be successfully implemented on the market.
Perpendicular nanomagnets can host complex bubble-like dynamics driven by the localized injection of a spin-polarized current. This kind of dynamics is here fully analyzed, by means of micromagnetic simulations, in two typical spintronic geometries: confined point-contact spin-valve and extended nano-contact oscillator. The multi-approach analysis gets information from the time domain signal, its...
This work deals with the description of the Photovoltaic Laboratory at the Department of Engineering and Architecture of the University of Trieste. The description of the main facilities involved, such as three grid-connected photovoltaic plants and a test facility for the characterization of photovoltaic modules, is being proposed. Moreover, an overview of the recent and future research activities...
The ratio between the energy returned from an energy production process and the energy invested in such process is a numerical indicator of the benefit involved in the exploitation of that source of energy. This paper is a first report of an ongoing project at the University of Trieste, focused on the calculation of the EROEI (Energy Return on Energy Investment) for two different photovoltaic systems.
Here we review the possible application of carbon nanotubes and hybrid carbon/metal or metal-oxide nanostructures as chemiresistor for gas chemical sensors produced and analyzed at the Elettra Synchrotron facility. The endeavor of this paper is to understand the key facts emerging from these systems, that seem to demonstrate their high sensitivity to several molecular species, with the effort to catch...
Induction motors are presently the most widespread kind of electric machinery used in industrial and vehicle applications. In the engineering practice, it frequently happens that designers or final users have to roughly estimate the size, weight and some basic performance data of an induction motor based on few specification requirements such as its rated speed and power. This paper describes a heuristic...
In the last years important improvements are developing in the electrical systems strong encouragements towards the energy saving and the installation of small renewable power sources. Harbor areas have to be considered as a unique territory, and new management business for electrical distribution systems have to be carried out by port authorities. The ports are required to arrange their electrical...
The effective management of several distributed devices, even in real time, is one of the mandatory conditions for the design, operation and upgrade of modern particle accelerators control systems. In order to cope with the performance demanded by such plants, the existing equipment has to be continuously improved or new strategies have to be considered to overcome its limitations. The impressive...
The integration of Energy Storage Systems (ESSs) in Micro Grids (MGs) is becoming mandatory for the optimal management of the energy flows and to make the MG an efficient and self-sustainable system, further able to provide ancillary services to the main network. The present paper includes an overview on the services and benefits that an ESS, based on batteries technology, can provide in a MG, considering...
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