A5087714503- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Silicon Carbide Semiconductor Technologies
- HVDC Systems and Fault Protection
- Microgrid Control and Optimization
- GaN-based semiconductor devices and materials
- Advanced Battery Technologies Research
- Electromagnetic Compatibility and Noise Suppression
- Induction Heating and Inverter Technology
- Vacuum and Plasma Arcs
- Phonocardiography and Auscultation Techniques
- Plasma Diagnostics and Applications
- Smart Grid Energy Management
- Neural Networks and Applications
- Power System Reliability and Maintenance
- Particle Detector Development and Performance
- Real-time simulation and control systems
- Multi-Agent Systems and Negotiation
- Distributed and Parallel Computing Systems
- Radiation Effects in Electronics
- Experimental Learning in Engineering
- Network Time Synchronization Technologies
- Power Quality and Harmonics
- Electrical Fault Detection and Protection
- Wireless Power Transfer Systems
Brera Astronomical Observatory
2024
Politecnico di Milano
1996-2022
National Statistical Institute of Portugal
2022
ABB (Italy)
2016-2021
Polytechnic University of Turin
2015
University of Milan
2003-2012
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2012
STMicroelectronics (Italy)
2002
University of South Carolina
2001
The process for designing digital controls power electronics is typically quite convoluted and affords many opportunities errors to occur. We present here a new complete method rapid prototyping of that allows realization designs. approach uses collection tools include both software (the virtual test bed (VTB) Matlab/Simulink) hardware (dSpace DSP). An example application the methodology completes discussion.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The requirements for driving gallium nitride (GaN) heterostructure field-effect transistors (HFETs) and the design of a resonant drive circuit GaN power HFET switches are discussed in this paper. use wideband III-nitride (such as GaN) devices today is limited to telecom low-power applications. current lack high-frequency high-power drivers prevents their application converters. proposed based...
As the LHC luminosity is ramped up to 3 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex Notation="TeX">$\,\times 10^{34}~{\hbox {cm}}^{2}~s^{1}$</tex></formula> and beyond, high rates, multiplicities, energies of particles seen by detectors will pose a unique challenge. Only tiny fraction produced collisions can be stored offline immense real-time data reduction needed. An effective trigger system must maintain...
The energy transition from fossil fuels to sustainable sources and the increase of demand are putting distribution grid under stress. Resilience in operations reliability asset protection driving transformation modern smart grid.
The increased use of directed current (DC) as an enabler for the integration renewable sources gains rising interest also power transmission and distribution networks. Some preliminary installations showed some benefit this technique compared with alternating (AC) pushed development switchgear high (HV) medium voltage (MV) DC grids. Several techniques able to provide interruption have been proposed in publications are briefly described. article focusses on actual activities tests a circuit...
Accurate electrical arc modeling with physically meaningful parameters is essential for the assessment of medium-voltage DC circuit breakers in industrial and railway applications. Laboratory testing characterization, as outlined IEC 61992 standard series applications, typically provide data to asses operational behavior componentsin power distribution system, including recorded waveforms terminal voltage current but not insights inputs needed inner analysis design optimization. This paper...
This paper presents the design and implementation of a new integrated circuit (IC) that is suitable for driving generation high-frequency GaN HFETs. The circuit, based upon resonant switching transition technique, first briefly described then discussed in detail, focusing on process practical considerations. A level-shifter topology, used to generate zero negative gate-source voltages required switch HFET, introduced analyzed. experimental measurements included this report results tests...
A dc/dc converter for power distribution aboard the International Space Station (ISS) and space vehicles employing 120 V dc bus is proposed. It well suited to supply multiple loads including peripheral low voltage point-of-load (POL) regulators. The phase-shift controlled at constant frequency of 500 kHz. topology characterized by in a sequence 4 metal-oxide semiconductor field-effect transistors (MOSFETs), switched ON zero voltage. linear model has first-order dynamics. Responses small...
The benefits offered by the DC energy distribution in different applications raised interests towards new power architectures and apparatus. availability of related LV MV apparatus protection schemes is fact crucial to fully exploit opportunities opened management for smart grid. Experimental results testing circuit breakers based upon current injection solid-state technologies are presented their effectiveness discussed. possibilities local measurement communication support operation as...
The energy management in complex power electronic systems especially case of limited availability is challenging. In these generators, loads, storage devices and electrical routers must be dynamically controlled reco
This paper investigates the use of switching converters for power supply distribution to calorimeters in ATLAS experiment when Large Hadron Collider (LHC) will be upgraded beyond nominal luminosity. Due highly hostile environment must operate in, all main aspects are considered investigation, from selection converter topologies thermal analysis components and PCBs, with attention reliability issues devices subject ionizing radiations. The focuses on particular, but crucial, case supplies...
Lately, the Italian astronomical community has begun transition to Model Based System Engineering (MBSE). This tool been largely applied development of Cassegrain U-Band Efficient Spectrograph (CUBES) designed provide high instrumental efficiency ( > 37 %) observations in near UV (305-400 nm requirement, 300-420 goal) at a spectral resolving power R 20, 000 (with lower-resolution, skylimited mode ≈ 7, 000). Here, MBSE used mainly 3 areas: requirements management, activities modeling, and...
Multi-agent systems can be defined as a network of interacting software modules that bring together dispersed collectively manage complex tasks are beyond the capacity any individual system on network. In this work, aim behind technology is to monitor and diagnose an electric validate certain control actions depending changing operating conditions. The application uses peer approach rather than hierarchical manager/slaves
Different small-signal models are available for describing the dynamics of pulse width modulators (PWM) dc-to-dc converters. Discrete time reach best compliance in real life situations. Some converter control modes, particular phase shifting, provide advantages modeling discrete time. On other hand, burden getting such exact is often tedious. Currently, automatic tools that able to state-space model any PWM dc-dc switching at constant frequency. The authors claim use these advisable analysis...
In the last years progressive increase of distributed and non-programmable energy sources arise interest in use DC for medium-voltage distribution systems. The study focuses on design considerations apparatus required to support management protection these applications. fault-handling techniques system is introduced definition main requirements circuit breakers supported by computer simulations short-circuit current interruptions. A breaker designed 12 kV 2.5 kA nominal 15 interrupted...
Today and future distribution systems have converters connecting various sources loads to networks. The great impacts on fault protection. Protection of power electronics requires fast current interruption for protecting semiconductor switches. If currents are limited by in some cases, the traditional protection based high energy may be revised. coordination among slow protective devices different tripping criteria at conditions should ensured selectivity.
A hybrid medium voltage breaker consisting of a power electronic switch (PE) by-passed by parallel mechanical is presented in the paper. The main operation modes and performances 12 kV apparatus with 25 kA short-circuit current capability are introduced. results experimental tests confirm electrical behaviors foreseen simulations during design phase. uses MV applications as AC fault limiter (FCL) DC circuit discussed.
Voltage multipliers for the generation of high voltages (HV) are widely employed aboard space vehicles and new applications open-up. One is drive ionic motors. The characteristics such loads, as well those many others, require special care to dynamics robustness performances voltage supply. After recalling dynamic characterization Cockroft-Walton (CW) cell a linear three-port network in small signal approximation, n-cell chain characterized possibility reaching simplified expression its...
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 more. Each task is best performed within a dedicated environment: LabVIEW, Matlab, custom simulators The focus this work heterogeneous agent-based system; the aim to allow use interactive proactive capabilities proper complex environment. For purpose interfaces between agent environment have been...
A medical instrument for phono-cardiac signals acquisition and analysis is described in the paper. The system proposed based on an electronic stethoscope with enhanced performances environmental noise reduction, a software tool able to reproduce, visualize analyze heart sounds. recorded data can be collected stored patient- associated files, build up clinic history allow further consultation. demonstrator of has been realized. Experimental results show clear improvements signal ratio...
As the LHC luminosity is ramped up to 3×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">34</sup> cm xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> s xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> and beyond, high rates, multiplicities, energies of particles seen by detectors will pose a unique challenge. Only tiny fraction produced collisions can be stored on tape immense real-time data reduction needed. An effective trigger system...
Abstract The paper presents the analysis and results of jet pump applications in two biggest Italian heavy oil fields: Vega (15 °API) offshore Sicily Gela (9 onshore Sicily. In both fields water cut is as much 50% most wells produce artifiCial lifting: ESP, diluent lift rod pumps are three methods used. tests with were motivated by need to use a cheaper artificial lifting method. objective was, fact, reduce workover costs for replacing failed operating producing lifting. Various sizes, types...