The aim of this paper is to present a solution for active output voltage regulation in permanent-magnet (PM) automotive alternators, through mechanical flux weakening. An axial-flux PM ironless machine is investigated, which is composed of two stators connected in series which can be shifted one with respect to the other, thus allowing a theoretically infinite constant power speed range. This paper focuses on the aspects related to layout, sizing, and control of the shifting mechanism, which are critical for accurate output voltage regulation. Experimental tests on a 2-kW prototype validate the capabilities of the proposed solution, both during steady-state and transient operating conditions.
Active Output Voltage Regulation for an Ironless Axial-Flux PM Automotive Alternator With Electromechanical Flux Weakening / GIULII CAPPONI, Fabio; R., Terrigi; Caricchi, Federico Attilio; Luca Del, Ferraro. - In: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS. - ISSN 0093-9994. - STAMPA. - 45:5(2009), pp. 1785-1793. (Intervento presentato al convegno 42nd Annual Meeting of the IEEE-Industry-Applications-Society tenutosi a New Orleans, LA nel SEP 23-27, 2007) [10.1109/tia.2009.2027552].
Active Output Voltage Regulation for an Ironless Axial-Flux PM Automotive Alternator With Electromechanical Flux Weakening
GIULII CAPPONI, Fabio;CARICCHI, Federico Attilio;
2009
Abstract
The aim of this paper is to present a solution for active output voltage regulation in permanent-magnet (PM) automotive alternators, through mechanical flux weakening. An axial-flux PM ironless machine is investigated, which is composed of two stators connected in series which can be shifted one with respect to the other, thus allowing a theoretically infinite constant power speed range. This paper focuses on the aspects related to layout, sizing, and control of the shifting mechanism, which are critical for accurate output voltage regulation. Experimental tests on a 2-kW prototype validate the capabilities of the proposed solution, both during steady-state and transient operating conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
