Search

Your search keyword '"Scelba, Giacomo"' showing total 124 results
Start Over Author "Scelba, Giacomo"
124 results on '"Scelba, Giacomo"'

101. Multi-Physics Models of a Low-Voltage Power Semiconductor System-in-Package for Automotive Applications

Author

Mauromicale, Giuseppe, Calabretta, Michele, Scarcella, Giuseppe, Scelba, Giacomo, and Sitta, Alessandro

Abstract

Power converters and semiconductor devices are spreading their application fields, due to new renewable energy and automotive frameworks. In the electrified vehicles context, the even more stringent requirements, both in terms of performances and reliability, pose new challenges in the design phase of power switches. This paper analyzes, by means of finite-element simulations, a low-voltage power semiconductor system-in-package devoted to automotive applications, which integrates a MOSFET-based half bridge and a controller. Three simulation physical domains integrated in a unique flow are considered: thermo-mechanical, electromagnetic, and thermal numerical models. The aim is to develop a new comprehensive methodology which starts with a thermo-structural simulation of the package, then computes the on-state resistance and parasitic components to assess the electrical behavior of the package. Finally, a simulation check is made to verify if the power device performances are thermally consistent with applicative conditions.

Published
2023
Full Text
View/download PDF

122. Fault-Tolerant Rotor Position and Velocity Estimation Using Binary Hall-Effect Sensors for Low-Cost Vector Control Drives.

Author

Scelba, Giacomo, De Donato, Giulio, Scarcella, Giuseppe, Giulii Capponi, Fabio, and Bonaccorso, Filippo

Subjects
*FAULT-tolerant control systems, *HALL effect transducers, *VECTOR control, *FAULT indicators (Electricity), *PERFORMANCE evaluation
Abstract

High-resolution position and velocity estimation algorithms based on binary Hall-effect sensors for low-cost vector control drives have been the subject of significant research in recent years. While different estimation algorithms have been proposed and analyzed, no contribution so far has dealt with Hall-effect sensor faults and their repercussion on the drive. Here, single and multiple Hall-effect sensor faults are analyzed, and a method to detect, identify, and mitigate such faults is investigated. The method is general, and it ensures proper operation of the drive and is not dependent on the particular estimation algorithm that is used; by way of example, here it will be applied to a vector-tracking observer. Limitations on the performances of the faulty system are discussed, and experimental results are reported to confirm the theoretical analysis. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

123. Implementation Is sues in Voltage Zero Sequence-Based Encoderless Techniques.

Author

Consoli, Aiflo, Scarcella, Giuseppe, Scelba, Giacomo, Royak, Semyon, and Harbaugh, Mark M.

Subjects
ELECTRIC potential, FORCE & energy, DETECTORS, FREQUENCIES of oscillating systems, ELECTRICITY, ENGINEERING instruments
Abstract

Recent articles demonstrate that sensorless drives for induction motors can operate at zero-electrical and mechanical frequencies with the aid of high-frequency signal injection techniques and processing the zero-sequence voltage signals. The paper presents some practical implementation issues affecting the performance of such a technique and shows how to improve the quality of the estimated angle. All the assessments are experimentally proved and have a general value that can be extended to other sensorless techniques injecting high-frequency signal. [ABSTRACT FROM AUTHOR]

Published
2008
Full Text
View/download PDF

124. A Low THD Three-Level Rectifier For Gen-Set Applications

Author

Giacomo Scelba, V. Sabatini, Luca Solero, S. Foti, Alessandro Lidozzi, Antonio Testa, Foti, Salvatore, Testa, Antonio, Scelba, Giacomo, Sabatini, Valerio, Lidozzi, Alessandro, and Solero, Luca

Subjects
multilevel rectifiers, Computer science, Topology (electrical circuits), Permanent magnet synchronous generator, Capacitor balancing, Industrial and Manufacturing Engineering, law.invention, Rectifier, law, high-speed generators, low current total harmonic distortion (THD), Electrical and Electronic Engineering, Power MOSFET, Total harmonic distortion, hybrid modulation, total harmonic distortion (THD), business.industry, Electrical engineering, AC power, low current, Capacitor, Control and Systems Engineering, Inverter, Capacitor balancing, high-speed generators, hybrid modulation, low current, total harmonic distortion (THD), multilevel rectifiers, business
Abstract

A low input current total harmonic distortion (THD) rectifier is presented, tailored around an open-end winding permanent magnet synchronous generator. Specifically, a six-level converter topology is obtained by connecting the generator stator winding to a three level T-type unidirectional rectifier on one side, and to an auxiliary two-level inverter on the other side. The T-type rectifier manages the entire active power stream and operates at the line frequency in order to minimize the switching power losses. The auxiliary inverter is instead driven by a standard PWM technique, being tasked to sinusoidally shape the input current and to actively balance the voltage across the dc-bus capacitors of the T-type rectifier. Such an inverter, being rated at a lower power and at a lower voltage than the T-type rectifier, can exploit low-cost power mosfet s. The proposed topology, featuring a very low input current THD, could well supplement in aircraft, portable or distributed generation applications, modern high-speed permanent magnet synchronous generators featuring a quite small stator impedance. Simulation and experimental results confirm the effectiveness of the proposed configuration.

Published
2019

Catalog

Books, media, physical & digital resources
See catalog results