Search results for "stato"
showing 10 items of 384 documents
Improvement of IPMSM performance through a mixed radial-tangential rotor structure
2010
In this paper an IPMSM (Interior Permanent Magnet Synchronous Motor) rotor configuration optimization is proposed in order to increase the performances in terms of torque, limiting at the same time the rotor leakage flux. The final mixed radial and tangential rotor configuration here proposed and described determines a reduction in PM material quantity of about 25% compared to a tangential IPMSM one with the same dimension and weight, together with an increase of the motoring torque of about 50%. Some simulation carried out by using a FEM software and a comparative analysis with two traditional IPMSMs rotor configurations show that a significant improvement can be achieved with limited chan…
Analysis, characterization and minimization of IPMSMs cogging torque with different rotor structures
2015
This paper presents the analysis, characterization and comparison of the cogging torque components generated by five different IPMSM rotor structures. More in detail, an IPMSM model (named IPMSM1), which is derived from a commercial geometry, is analyzed by using a Finite Element Method (FEM) approach. Then, four other IPMSM models, which are obtained by modifying the IPMSM1 rotor structure and by maintaining the same stator configuration, are proposed and analyzed. From the obtained simulation results, the cogging torque components for each structure are determined and compared. From this comparison, a significant cogging torque decrease is occurring for the modified geometries, without af…
Design of a Permanent Magnet Synchronous Generator using Interactive Multiobjective Optimization
2017
We consider an analytical model of a permanent magnet synchronous generator and formulate a mixed-integer constrained multiobjective optimization problem with six objective functions. We demonstrate the usefulness of solving such a problem by applying an interactive multiobjective optimization method called NIMBUS. In the NIMBUS method, a decision is iteratively involved in the optimization process and directs the solution process in order to find her/his most preferred Pareto optimal solution for the problem. We also employ a commonly used noninteractive evolutionary multiobjective optimization method NSGA-II to generate a set of solutions that approximates the Pareto set and demonstrate t…
Verso lo stato costituzionale di diritto
2012
Negli anni Cinquanta del Novecento, la cultura giuridica europea convergeva su un terreno comune, avvitata intorno ad una questione cruciale, come paralizzata di fronte alla cosiddetta «crisi del diritto». Più che dal quadro politico, reso instabile da residue questioni irredentiste, da focolai di nazionalismo, dagli effetti della decolonizzazione, dalla tensione tra blocchi ideologici, lo sconforto e lo scetticismo derivavano dall’«immane crisi storica dell’umanità, rivelata dalle guerre mondiali» (Vittorio Emanuele Orlando), dal ricordo di quei regimi che, fra gli anni Venti e Quaranta, avevano abdicato ai princìpi dell’umana convivenza, calpestando, in nome di un cieco monismo, ogni form…
Retro-nasal aroma release is correlated with variations in the in-mouth air cavity volume after empty deglutition.
2012
International audience; We hypothesized that interindividual differences in motor activities during chewing and/or swallowing were determining factors for the transfer of volatile aroma from the in-mouth air cavity (IMAC) toward the olfactory mucosa. In our first experiment, we looked for changes in IMAC volume after saliva deglutition in 12 healthy subjects. The mean IMAC volume was measured after empty deglutition using an acoustic pharyngometer device. Based on the time course of the IMAC volume after swallowing, we discerned two groups of subjects. The first group displayed a small, constant IMAC volume (2.26 mL ±0.62) that corresponded to a high tongue position. The second group displa…
Neatņemamās daļas tiesīgo atstumšana no mantojuma.
2017
Bakalaura darbs ir veltīts institūtam, kas regulē neatņemamās daļas tiesīgo atstumšanu no mantojuma. Darba gaitā izpētīts neatņemamās daļas tiesīgo jēdziens un vēsturiskā attīstība, kā arī atstumšanas no mantojuma jēdziens un pamati. Ir svarīgi izprast šī institūta nozīmi un regulējumu, tādēļ darba gaitā tika apkopota pieejamā literatūra, tiesu prakse, kā arī ārvalstu tiesību normu regulējumi par šo institūtu. Šo institūtu mērķis ir noteikt tiesības testatora tuvākajiem radiniekiem- izprasīt sev pienākošos neatņemamo daļu. Šīs tiesības ierobežo testatora pēdējās gribas izpaudumu. Darba mērķis ir izprast, kā izveidojies pašreizējais neatņemamās daļas tiesīgo institūts un pierādīt, ka minētai…
Sbarchi
2021
During 2020, the Mediterranean Sea was again the testing ground for migration flows from North Africa and the Middle East to Italy, Greece and Spain. 2020 was also a complex year due to the spread of the COVID-19 pandemic. Movements between countries were affected by the spread of the virus that spared no one and imposed the need to reflect on 'global health' and the consequences that this has, also in the relationship between countries and in travel.
Sensorless induction machine drive for fly-wheel generation unit based on a TLS-based non-linear observer
2016
This paper proposes a sensorless technique for an induction machine Flywheel Energy Storage System (FESS) based on a non-linear observer integrated with a total least-squares speed estimator taking into consideration the IM (Induction Machine) saturation effects. The nonlinear observer is based on an original formulation of the dynamic model of the IM including the magnetic saturation, rearranged in a space-state form, after assuming as state variables the stator current and the rotor magnetizing current space-vectors in the stator reference frame. The choice of the observer gain has been made by the use of Lyapunov's method. The speed signal needed by the non-linear observer for the flux e…
La Corte EDU si pronuncia sulla perseguibilità dei reati commessi dalle vittime di tratta
2021
The note to judgment deals with the case of V.C.L. and A.N. v. the United Kingdom (applications nos. 77587/12 and 74603/12), in which the European Court of Human Rights considered for the first time the relationship between Article 4 (prohibition of forced labour) of the European Convention and the prosecution of potential victims of trafficking. In doing so, the Court held unanimously that there had been a violation of Article 4 and of Article 6 (right to a fair trial), since, despite the existence of credible suspicion that V.C.L. and A.N. had been trafficked, neither the police nor the prosecution service had referred them to a competent authority for assessment. For its judgment, the Co…
Implication of an odorant-binding protein in precopulatory behaviour and interaction with the bacterial microbiota
2023
Chemoreception allows animals to detect nutritive food and avoid toxic compounds. Volatile and non-volatile chemical compounds, which are detected by olfactory and gustatory sensory organs, can trigger feeding and reproductive behaviours in animals such as Drosophila melanogaster. Inside chemosensory organs, perireceptor proteins like odorant-binding proteins (OBPs) serve to transport odorant and tastant molecule to dedicated receptors. OBPs are not only involved in chemoreception but also in several other functions. A recent study revealed an interaction between insect microbiota and OBP expression while another one showed that microbes can promote nutrient harvesting on food. In our proje…