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The reliability of a power converter can be improved using a well-dimensioned cold plate. At this aim it is necessary to realize a state of the art cold plate by means of thermal-fluid dynamic numerical analysis and ad-hoc designed experimental test bench. Features and metrological characterization of test bench for cold plate design and verification will be discussed in this paper.
Devices used in future experiments at LHC will be called to work in very hostile environment. Power supply is a key aspects in this scenario and new converter will be re-designed in order to meet the future requirements. In this paper a main DC-DC power converter, developed by authors in the framework of the APOLLO R&D project, has been proposed and the experimental activity devoted to its characterization...
In this paper, a technique for classifying the working condition of a water jet system is presented. The classifier is based on the discrete Fourier transform (DFT) of the electrical power signal. It is shown that this information can characterize the working condition of the system and predict the presence of (an incoming) faulty behavior. Experiments and comparisons with the 1-nearest-neighbor (1-NN)...
In this paper, a technique for assessing both working and healthy condition of water jet system nozzles is presented. The proposed classifier is based on the DFT of the electrical power signal. At this aim it will be shown that the electrical power signal support all necessary information to characterize the working condition of the system and to predict the presence of an incoming faulty behavior...
This paper presents an approach to early fault detection for inverter fed induction motor drives. The method relies on a simple algorithm, which analyzes the line current signal acquired upstream from the rectifier-inverter set. The diagnostic system proposed here, introduces an ad hoc index related to the health state of the induction motor. Experimental results, showing the satisfactory performance...
In this paper, a technique for classifying the working condition of a water jet system is presented. The classifier is based on the DFT of the electrical power signal. It is shown that this information can characterize the working condition of the system and to predict the presence of (an incoming) faulty behaviour.
In this work a set of indexes able to define a suitable "footprint" of a Water jet system has been investigated. A on-line and non-intrusive monitoring and diagnostic system has been designed implementing an algorithm defined on the basis of the proposed indexes.
A multi-agent framework for monitoring and control of power electronics systems may comprise agents with different tasks: strictly measurement, control, computation, decision making, simulation and more. Each task is best performed within a dedicated environment: LabVIEW, Matlab, custom simulators and more. The focus of this work is a heterogeneous agent-based monitoring and control system; the aim...
Starting from the correlation between electric input, mechanical and fluid-dynamic signals a set of index able to define a suitable "footprint" of a Waterjet system in normal working conditions has been defined. A on-line and non-intrusive monitoring and diagnostic system for this kind of device has been designed implementing an algorithm defined on the basis of the proposed "footprints".
A multi-agent framework for monitoring and control of power electronics systems may comprise agents with different tasks: strictly measurement, control, computation, decision making, simulation and more. Each task is best performed within a dedicated environment: LabVIEW, Matlab, custom simulators and more. The focus of this work is a heterogeneous agent-based monitoring and control system; the aim...
Starting from the correlation between electric input, mechanical and fluid-dynamic signals a set of index able to define a suitable "footprint" of a water jet system in normal working conditions has been defined. An on-line and non-intrusive monitoring and diagnostic system for this kind of device has been designed implementing an algorithm defined on the basis of the proposed "footprints"
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