44 research outputs found
BACRank:Ranking building automation and control system components by business continuity impact
L'impiego degli alimentatori di continuit\uc3\ua0 (UPS) negli impianti industriali e d'automazione.
A finite element analysis of an electromagnetic flow control valve
The behavior of an electromagnetic control valve under a perturbative magnetic field is evaluated. The electromagnetic valve is numerically modeled by means of a nonlinear 2D field-element code. The electromagnetic force produced on the valve's plug is obtained using the Maxwell stress tensor approach, under both normal and perturbed conditions. The numerical results are compared with those of experimental tests, which have been carried out under the same conditions as the numerical analysis
Harmonic Modelling of Houshold and Commercial Aggregate Loads
The paper presents the harmonic models of different aggregation of domestic and commercial customers, obtained on the basis of a set of measurements. After an investigation on the customer characteristics (number of users, rated power, consumption), a correlation between size of aggregation and harmonic emission has been established
Evaluation of damages due to voltage dips on devices and industrial plants
Evaluation of disrupted operations due to voltage dips on industriai processes depends on th\ue8 interaction between equipment sensitivities and characteristics of expected voltage dips on th\ue8 electrical network. In case of continuous processes, a multi-motor System driven by a series of adjustable speed drives is required in order to regulate and to maintain Constant th\ue8 characteristics of th\ue8 end product. In th\ue8 paper an alternative electrical scheme for reducing high sensitivities of ASD to voltage dips is proposed and compared with a traditional approach. Finally, costs and benefits of th\ue8 proposed solution is discussed for th\ue8 case of a paper industry, taken as typical example of multi-motor continuous process
Le ESCO e il mercato dell'efficienza energetica
Il libro illustra il nascente mercato delle Eco in Italia e ne illustra le modalit\ue0 di operazion
Spectroscopic conductivity studies of ionic motion in poly(ethyleneglycol 600)/(LiCl)x electrolytic complexes
Lezioni di Elettrotecnica I
Reti lineari in regime stazionario, campo di corrente, elettrostatica, elettromagnetismo, reti in regime sinusoidale, sistemi trifas
Lezioni di Elettrotecnica III
Esercizi di reti in regime stazionario, sinusoidale monofase e trifase, reti con accumulo di energia, reti magnetiche. Trasformatori. Motoro asincroni. Linee elettriche
Lezioni di Elettrotecnica II
Principi di funzionamento e caratteristiche costruttive di: trasformatori, convertitori statici di energia, macchine sincrone, macchine asincrone, macchine in corrente continua, impianti elettric