Search results for "generator"
showing 10 items of 426 documents
Design Considerations of Transverse Flux Generator to Sea Wave Energy
2014
In this paper we study the possibility to use a transverse flux linear generator (TFG) because transverse flux technology presents the highest force density per volume index among the iron based electrical machines. This paper is organized as follows an introduction to describe "state of the art" of WEC's and TFG, in the Section II we find a summary description of the marine condition of the chosen site; in the Section III there is an the analytical procedure for geometric and magnetic design of device (chosen material, length, etc) and in the Section IV the simulation of generator. Further defined the design of the generator, the machine was designed and analyzed through the use of a 3D FE…
A computer controlled patterning system for scanning probe microscopes
1999
Abstract A pattern generator system for lithography based on scanning force microscopes has been developed. Patterns to be miniaturized onto a chip can be scanned or drawn by any common graphical program. The pattern file is used to control a voltage simultaneously with the microscope probe scanning the surface of the substrate. The voltage can be used in numerous different ways to manipulate the substrate, depending on the lithographic method preferred. We have demonstrated the system by adding this voltage to the z -piezo voltage of the scanner, in order to make the probe plow the pattern into a film spinned on the sample. To maintain linearity in zooming in and rotating the scanning dire…
Controlling and learning motor functions
2018
Effective and adaptive motor functions are important for living beings and developing computational and learning mechanisms for roving robots is a crucial aspect in biorobotics. In this chapter we report a new architecture for motor learning to be applied in insect-like walking robots. The proposed model is based on the MB structure previously introduced able to memorize time evolutions of key parameters of the neural motor controller to improve existing motor primitives. The adopted control scheme enables the structure to efficiently cope with goal-oriented behavioural motor tasks. The problem of body-size evaluation is also considered and a model for the parallax-based estimation is provi…
An optimum design of the magnetic circuit of a PM linear electrical generator for the exploitation of sea waves.
2006
In this paper an approach to the optimization of the magnetic design of a Permanent Magnet (PM) linear generator for the exploitation of the energy contained in sea waves is presented. This approach consists of a two step procedure: the first one takes into account the stochastic features of the sea wave motion and describe the working condition of the machine under this motion by adopting a lumped parameter model. In this step the objective function is the energy production. The second step optimizes the generator by using the results obtained in the first step as the constraints that must be fulfilled by a design based on a Finite Element Method (FEM) analysis. Furthermore, the approach i…
Optimization of cogging force in a linear permanent magnet generator for the conversion of sea waves energy
2015
In this paper an approach to the optimization of cogging force in a linear permanent magnet generator for the conversion of sea waves energy is presented. We have optimized the cogging force of a linear permanent magnet generator by using a 3D FEM parametric simulation. Several possible design solutions have been computed. A generator has been built and the results of the minimization procedure has been experimentally validated.
The use of sea waves for generation of electrical energy: a linear tubular asynchronous electrical generator
2007
A linear tubular asynchronous generator to be used as generator driven by seawave is presented. The design criteria of a TLIM with hollowed iron induced part as well as the technological processes to be adopted and the materials utilized in the various parts are described. The methodologies for mechanical assembling and electric wiring are considered too. Finally, the prototype with bimetallic induced part that has been designed and built is presented and some experimental results on electrical and mechanical variables are shown.
A Ferrite Tubular Linear Permanent Magnet Generator (FTLPMG) analysis and design
2014
Several linear synchronous generators for the exploitation of sea wave energy have been proposed. Such machines do not require reactive power for the magnetization since they use permanent magnets for the excitation. The use of permanent magnets in a rough environment such as the marine environment may be a very weak point in the application of these kind of devices. In order to overcome this difficulty, the authors in this paper propose a linear synchronous electrical generator. Its excitation uses ferrites as suitable solutions to extract energy from sea waves. This paper describes the analysis and design of an improved axially magnetized tubular permanent-magnet machine in which several …
First Life Cycle Impact Considerations of Two Wave Energy Converters
2018
The work presents two different revolutionary devices for the utilization of a new entry of renewable energy sources: sea wave. The first technology is based on linear generators, able to directly converts a linear motion into electrical output, limiting to minimum the chain of energy conversion. The other solution is based on a mechanical motion converter, coupled with alternators. The scope of this paper is to compare the two different systems designed by University of Palermo, through Life Cycle Assessment, in order to evaluate the global effects of the two systems to the environment.
Seawave Power Farm Design:A Case Study
2012
Currentenergycrisisandgeneralconcernsonenvvironmentalissueshavetriggeredaneverincreasingeffortoonharvestingrenewableenergies.Amongstrenewableenergysources,seawaveene ergyisdefinitelytheonethathasbeenlessutilised.Thisisprobablycausedbytworeasons:i)thes strongtechnicalnoveltiesthatarerequiredtoextractthee energythatiscontainedinahighlyandstochasticallyvariablem motion;ii)thedifficultyofindasuitableelectricalsystemabbletoconverttheenergycontainedinthemotionoftheseaintoelectricalenergy.Inthispaperweproposeanapproachtosetupaggeneralmethodologytowardthedesignofaseawavefarm.Thefirststepisexplainedhowtochoosetheconversionsysteem,inthesecondstepisdiscussedtheconnectionschem meamongtheconverters,inth…
Metodologia e analisi dell'evoluzione urbana del centro storico di Alcamo
2021
Il contributo si inquadra nell’ambito di una ricerca operativa che deriva da un rapporto virtuoso tra un ente locale di tradizioni illustri – il Comune di Alcamo – e il Centro Interdipartimentale di Ricerca sui Centri Storici (CIRCES) dell'Università degli Studi di Palermo. Tale ricerca è stata finalizzata a tracciare le linee guida per pianificare in maniera efficace il recupero e la riqualificazione del centro storico di Alcamo, uno dei centri siciliani di maggiore interesse per l’alta concentrazione di risorse storiche ed architettoniche. In particolare il contributo, nell’ottica che qualsivoglia operazione finalizzata al recupero e alla riqualificazione di una città storica non può pres…