Title :
Analysis of the asymmetrical operation of dual three-phase induction machines
Author :
Bojoi, R. ; Farina, F. ; Lazzari, M. ; Profumo, F. ; Tenconi, A.
Author_Institution :
Dipt. di Ingegneria Elettrica Industriale, Politecnico di Torino, Italy
Abstract :
The paper deals with the problem of the unbalanced current and power sharing in the dual three-phase induction machine supplied by a sinusoidal voltage source. In particular, the case discussed has two three-phase sets of full-pitch windings, spatially shifted by 30 electrical degrees with isolated neutrals. The unbalanced current sharing between the two winding sets is due to the not eliminable small system asymmetries. First, the machine model to compute the unbalances is presented; second, the analysis of the system asymmetries and their effects on the machine operation is discussed. Simulated and experimentally tested sinusoidal supply conditions are presented for a 10 kW dual-three phase induction machine prototype.
Keywords :
induction motors; machine theory; machine windings; 10 kW; asymmetrical operation; dual three-phase induction machines; full-pitch windings; isolated neutrals; machine model; power sharing; sinusoidal supply conditions; sinusoidal voltage source; small system asymmetries; three-phase sets; unbalanced current sharing; Circuits; Computational modeling; Energy conversion; Induction machines; Induction motor drives; Induction motors; Machine windings; Testing; Virtual prototyping; Voltage control;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1211299
