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18 results on '"Pizzo, Andrea Del"'

13. High-Speed Machines: Typologies, Standards, and Operation Under PWM Supply

Author

Leuzzi, Riccardo, primary, Monopoli, Vito Giuseppe, additional, Cupertino, Francesco, additional, Brando, Gianluca, additional, Dannier, Adolfo, additional, Spina, Ivan, additional, Pizzo, Andrea Del, additional, Tommaso, Antonino Oscar Di, additional, Castiglia, Vincenzo, additional, Schettino, Giuseppe, additional, Nevoloso, Claudio, additional, and Miceli, Rosario, additional

Published
2018
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15. Generalised look-up table concept for direct torque control in induction drives with multilevel inverters.

Author

Brando, Gianluca, Dannier, Adolfo, Pizzo, Andrea Del, Rizzo, Renato, and Spina, Ivan

Subjects
ELECTRIC inverters, ROTATIONAL motion (Rigid dynamics), VARIABLE speed drives, TORQUE control, FIELD orientation principle
Abstract

This study deals with direct torque control (DTC) of induction motor drives when a multilevel inverter is involved. The proposed control technique is finalised to reduce the amplitude of torque oscillations and to improve the motor dynamic response regardless of operating speed conditions while assuring a satisfactory input current distortion. This is achieved by using a special look-up-table built with a novel approach. The control itself is based on the application in each sampling interval of one or two voltage vectors suitably selected, in order to ensure low electromagnetic torque ripple in steady-state operations and fast dynamic behaviour in transient operations. In the algorithm, the converter voltage vectors selection is carried out by using a novel look-up table whose entry points are computed by means of a specialised relation, starting from the outputs of multilevel hysteresis controllers. The suggested method, suitable for a generic multilevel inverter, is detailed for a neutral point clamped three-level inverter. The proposed algorithm is validated by several numerical results, and compared with a DTC algorithm based on a traditional three-speed range look-up tables. Finally, some experimental results, obtained with a scale laboratory setup, are shown, discussed and compared with the numerical ones. [ABSTRACT FROM AUTHOR]

Published
2015
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16. Preliminary analysis of Hybrid-Electric propulsion system integrated in a regional aircraftt

Author

Andrea Del Pizzo, Luigi Pio Di Noia, Michele Ferrara, Maria Cristina Cameretti, Cameretti, Maria Cristina, Pizzo, Andrea Del, Noia, Luigi Pio Di, and Ferrara, Michele

Subjects
Aviation, business.industry, 020209 energy, 02 engineering and technology, Propulsion, Combustion, Turbine, Automotive engineering, Electrically powered spacecraft propulsion, 0202 electrical engineering, electronic engineering, information engineering, Fuel efficiency, Environmental science, Thrust specific fuel consumption, business, Heat engine
Abstract

Aeroengine manufacturers must continuously develop new high-performance engines, in terms of both specific fuel consumption and pollutant emissions. During the combustion of kerosene, CO 2 and lower amounts of SO 2 , CO, NO x and hydrocarbons are produced; those gases are directly or indirectly responsible for greenhouse effect. Large emission of NO x is produced by engines during the aircraft operation in airport. In the near future, the target in Europe for the aviation sector provides a reduction of SO% of NO x and 50% of CO 2 . For this reason, the hybrid-electric propulsion systems (HEPS) are becoming a viable alternative propulsion technology in the field of aviation, useful to guarantee a massive reduction of pollution. In the paper, the authors analyze and simulate a hybrid turbine/electric engine for a passengers regional aircraft, comparing the results in terms of pollutant and fuel consumption with the conventional thermal engine ones.

Published
2018

17. High-Speed Machines: Typologies, Standards, and Operation under PWM Supply

Author

Vincenzo Castiglia, Vito Giuseppe Monopoli, Gianluca Brando, Antonino Oscar Di Tommaso, C. Nevoloso, Rosario Miceli, Ivan Spina, Giuseppe Schettino, Riccardo Leuzzi, Andrea Del Pizzo, Adolfo Dannier, Francesco Cupertino, Leuzzi, Riccardo, Monopoli, Vito Giuseppe, Cupertino, Francesco, Brando, Gianluca, Dannier, Adolfo, Spina, Ivan, Pizzo, Andrea Del, Tommaso, Antonino Oscar Di, Castiglia, Vincenzo, Schettino, Giuseppe, Nevoloso, Claudio, Miceli, Rosario, Leuzzi, R., Monopoli, V. G., Cupertino, F., Brando, G., Dannier, A., Spina, I., Pizzo, A. D., Tommaso, A. O. D., Castiglia, V., Schettino, G., Nevoloso, C., and Miceli, R.

Subjects
High-speed machines, Control and Optimization, Computer science, Computer Networks and Communications, Automotive industry, Energy Engineering and Power Technology, 02 engineering and technology, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, High-frequency converters, 01 natural sciences, Automotive engineering, Reliability (semiconductor), Insulation system, Partial discharge, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 010302 applied physics, business.industry, 020208 electrical & electronic engineering, Converters, Insulation ageing, Computer Networks and Communication, Electromagnetic coil, High-speed machine, Pulse-width modulation, business, High-frequency converter, Induction motor, Voltage
Abstract

This paper presents an overview of the most recent state of the art in the field of high-speed electric machines fed through high-frequency converters. This type of systems is rapidly wide spreading in aeronautical and automotive applications, as well as microturbines. Each typology has its own advantages and downsides, which are analytically presented in this paper. Some types of high-speed electric machines require high-frequency voltage supply, highly stressing the dielectric materials of the winding insulation system. For this reason, in high-speed electric drives, premature failure may occur and a reduction of the total system reliability has been observed in the past years. Such issues are comprehensively investigated in this paper.

Published
2018

18. A simplified speed-sensorless vector control for induction motor

Author

Kohei Iwamoto, Andrea Del Pizzo, Shin-ichi Hamasaki, Mineo Tsuji, Tsuji, Mineo, Iwamoto, Kohei, Hamasaki, Shin-ichi, and Pizzo, Andrea Del

Subjects
010302 applied physics, Engineering, Vector control, Observer (quantum physics), Rotor (electric), business.industry, 020208 electrical & electronic engineering, Control engineering, 02 engineering and technology, 01 natural sciences, law.invention, Direct torque control, Position (vector), law, Control theory, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, business, Encoder, Induction motor, Voltage
Abstract

From the viewpoint of miniaturization and cost reduction, sensor-less vector control systems without using an encoder have been proposed in many papers. We proposed a simplified method which estimates the rotor position using the d-axis voltage without using observer and controls motor speed using the d-axis voltage too. In order to verify the effectiveness of the proposed method, we have performed stability analysis and experiment. The results are discussed in this paper.

Published
2016

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