The interest in multiphase machines is increasing, owing to their advantages with respect to the three-phase ones, in particular for medium and high power applications. In this paper, the model of a five-phase surface-mounted permanent magnet synchronous generator, under mixed demagnetization of the rotor magnet trailing edges, and unbalance of the stator phases due to High-Resistance (H-R) connections, is developed. Then, a control scheme that can diagnose the rotor magnet demagnetization and the stator resistance dissymmetry, and ensure a nearly undisturbed behavior of the system, is presented. A current control scheme, which is based on multi-reference frame current regulators, is proposed. The on-line monitoring technique exploits the degrees of freedom of a multiphase generator. The effectiveness of the presented control scheme is verified by numerical simulations.
Detection of magnet demagnetization and high-resistance connections in five-phase surface-mounted permanent magnet generators / Tani, A.; Gritli, Y.; Mengoni, M.; Zarri, L.; Sala, G.; Bellini, A.; Serra, G.. - ELETTRONICO. - (2015), pp. 487-493. (Intervento presentato al convegno Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2015 IEEE 10th International Symposium on tenutosi a Guarda, Portugal nel 1-4 Sept. 2015) [10.1109/DEMPED.2015.7303734].
Detection of magnet demagnetization and high-resistance connections in five-phase surface-mounted permanent magnet generators
TANI, ANGELO;GRITLI, YASSER;MENGONI, MICHELE;ZARRI, LUCA;SALA, GIACOMO;BELLINI, ALBERTO;SERRA, GIOVANNI
2015
Abstract
The interest in multiphase machines is increasing, owing to their advantages with respect to the three-phase ones, in particular for medium and high power applications. In this paper, the model of a five-phase surface-mounted permanent magnet synchronous generator, under mixed demagnetization of the rotor magnet trailing edges, and unbalance of the stator phases due to High-Resistance (H-R) connections, is developed. Then, a control scheme that can diagnose the rotor magnet demagnetization and the stator resistance dissymmetry, and ensure a nearly undisturbed behavior of the system, is presented. A current control scheme, which is based on multi-reference frame current regulators, is proposed. The on-line monitoring technique exploits the degrees of freedom of a multiphase generator. The effectiveness of the presented control scheme is verified by numerical simulations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
