Alma Mater Studiorum Universitࠤi Bologna

 
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Electricity utilization
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of the research area: Electricity utilization and power components

bulletLV self-healing metallized polypropylene capacitors for power applications

The research activity is carried out in coordination with the Cigré WG Capacitors, headed by D. Zanobetti, and with the support of some local manufacturers. It deals with all-film capacitors for MV applications and with LV self-healing polypropylene capacitors. Concerning the first technology, the results of an experimental investigation carried at the Department laboratory with the aim of assessing the influence of type of dielectric liquid and of the type of electrode edge on the working gradient are presented in [1]. The comparison with the mixed paper-dielectric technology has also been accomplished [2]. Concerning metalized polypropylene capacitors, the research activity is aimed at studying the behavior of such components in transient conditions (pulse regimes) typical of the power electronic applications. The research activity is developed in collaboration with the research group Electrical Measure headed by M. Rinaldi. One of the obtained results is the identification of the causes that produce the heads separation of such a kind of capacitors when they are used in the above mentioned applications. The analysis of the problem with the first results have been presented at in [3] and in [4,5]. More results and the main conclusions of the study are presented in [6] and [7].
 

bulletTubular-plate lead-acid accumulators and Ni-Zn batteries performance for electric vehicles applications

The research concerns the assessment of the short and long term performance of advanced batteries with the characterization of the relevant parameters. The research involves also the development and construction of microchip experimental benches for the selection of new test cycles [9-16].
 

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Development and realization of a power systems plant for in-situ vitrification of contaminated soils

The aim of the research is the treatment of polluted soils by means of the vitrification process. The activity is developed within the framework of the National Research Program Nr. 15 ‘Technology for the reclamation of polluted soils’ supported by the Italian Ministry of Research and University. The research program involves some Departments of the University of Bologna, other national universities and two large regional corporations. The project concerns the development of four power plants for the thermal treatment of the polluted soil by means of the Joule effect corresponding to laboratory, pre-pilot, pilot and real-scale respectively. The research activity [17] includes also the electrical characterization of the soil under treatment during the subsequent phases of the vitrification process. The second, third and fourth of the above mentioned power plants, are also equipped with a gas-effluent capture and treatment system.

References

  1. C.A. Nucci, F. Tarroni, D. Zanobetti, "Characteristics of dielectric fluids for medium-voltage power capacitors", Conf. rec. 8th International conference on Conduction and breakdown in dielectric liquids, Pavia, 24-27 July 1984. Published, enlarged IEEE Trans. on Electrical Insulation, Vol. EI-20, No. 2, pp. 423-426, April 1985.

  2. F. Colla, C.A. Nucci, D. Zanobetti, "All-film capacitors for commutation applications", Proc. 7th European conference on Electrotechnics, pp. 217-221, Paris, 21- 23 Aprile 1986.

  3. C.A. Nucci, S. Pirani, M. Rinaldi: "Tests on the electrode contact degradation caused by current pulses in self-healing low voltage metalized polypropylene capacitors for power electronics", CIGRE, WG 15-05, rep. 86-25, Paris, agosto 1986.

  4. C.A. Nucci, S. Pirani, M. Rinaldi, "Study on the compatibility of self-healing polypropylene capacitors with impulsive conditions met in power electronics applications", Proc. 2nd International conference on Properties and applications of dielectric materials, pp. 740- 745, Pechino, 12-16 settembre 1988. Pubblicata, ampliata, col titolo "Pulse withstand capability of self-healing metalized polypropylene capacitors in power applications. An experimental investigation", su IEEE Trans. on Electrical Insulation, Vol. EI-26, No. 1, pp. 146-155, Febbraio 1991.

  5. C.A. Nucci, S. Pirani, M. Rinaldi: "Degradation of the electrode-end contact in mpp capacitors", CIGRE, WG 15-05, rep. 90-05, Paris, August 1990.

  6. C.A. Nucci, S. Pirani, M. Rinaldi, "Electrode-end contact degradation of metallized polypropylene capacitors in power applications", Proc. 3rd Int. Conf. on Properties and applications of dielectric materials, pp. 466-469,Tokio, 8-12 July 1991.

  7. A. Borghetti, C.A. Nucci, G. Pasini, S. Pirani, M. Rinaldi, "Tests on self-healing metallized polypropylene capacitors for power applications", CIGRE WG 15/03, paper 05/93, Hakone, Japan, 30 August 1993.

  8. A. Borghetti, C.A. Nucci, G. Pasini, S. Pirani, M. Rinaldi, "Tests on self-healing metallized polypropylene capacitors for power applications", CIGRE WG 15/03, paper 05/93, Hakone, Japan, 30 agosto 1993, presented at the IEEE PES Summer Meeting 93, paper #94 SM 424-2 PWDR, S. Francisco, CA, July 1994. IEEE Trans. on PWDR, Vol. 10, No. 1, pp. 556-561, January 1995.

  9. C.A. Nucci, "Tests on tubular-plate lead-acid accumulators for electric vehicles", Proc. Drive electric, paper 2.15, Sorrento, 1-3 October 1985.

  10. C.A. Nucci, D. Zanobetti: "Prestazioni e durata di accumulatori al piombo per trazione elettrica stradale (in Italian)", 1986. Proc. ‘Progetto finalizzato Energetica 1983-1987, Sottoprogetto Produzione, accumulo, trasporto e distribuzione dell'energia elettrica’, pp. 503-513, Rome, January 1987.

  11. C.A. Nucci, D. Zanobetti, G. Lodi, G. Ceccarini, "Studio dell'influenza delle modalità di carica e delle profondità di scarica sulle prestazioni e sulla durata degli accumulatori al piombo per servizio di trazione di autoveicoli commerciali (in Italian)", Proc. ‘Seminario generale delle Unità operative del PFE (Pisa 3-6 November 1986), Report published by ‘Progetto finalizzato Energetica 1983-1987’, pp. 278-285, Rome, December 1986.

  12. C.A. Nucci, D. Zanobetti, "Prestazioni e durata di accumulatori per servizio di trazione (in Italian)", Atti del seminario generale delle Unità operative del PFE (Montecatini, 13-15 Aprile 1989), Report published by ‘Progetto finalizzato Energetica 1983-1987’, pp. 237-242, Rome, September 1989.

  13. C.A. Nucci, D. Zanobetti, C. Faglioni, A. Albertini, "Aging indexes for tubular-plate lead-acid accumulators for electric vehicles", Proc. 11th Electric Vehicle Symposium, Florence, 27-30 settembre 1992.

  14. A. Borghetti, C.A. Nucci, "Life-tests on tubular-plate lead-acid batteries for electric vehicles", Proc. Symp. Realites and prospects of the electric vehicle, La Rochelle, 15-19 November 1993.

  15. R. Giglioli, C.A. Nucci, "Accumulatori al piombo per veicolo elettrico stradale. Caratteristiche e gestione razionale (in Italian)", Proc. ‘Giornata di sudio sulla Innovazione nei veicoli elettrici’, Bologna, Facoltà di Ingegneria, 3-5 nov. 1993

  16. C.A. Nucci, M. Paolone, A. Venturoli, "Analysis of Ni-Zn batteries performance for hybrid light-vehicles applications", Proc. of the 2002 IEEE International Symposium on Industrial Electronics, L'Aquila, 2002.

  17. M. Paolone, R. Berti, C. A. Nucci, G. Camera Roda, P.L. Rossi, L. Bruzzi, A. Bazzi, "A Power Systems Plant for In-Situ Vitrification of Contaminated Soils", Proc. 2003 IEEE Bologna Power Tech Conference, Bologna, Italy, 24-26 June, 2003.