Open AccessEffect of open stator slots on the performance of an interior permanent magnet automotive alternator
Author(s) -
ŽivotićKukolj Vlatka,
Soong Wen Liang
Publication year - 2013
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2012.0105
Subject(s) - stator , magnet , alternator , inductance , automotive industry , automotive engineering , finite element method , materials science , torque , electromotive force , air gap (plumbing) , saturation (graph theory) , electrical engineering , counter electromotive force , engineering , electromagnetic coil , mechanical engineering , voltage , physics , power (physics) , structural engineering , composite material , aerospace engineering , mathematics , quantum mechanics , thermodynamics , combinatorics
This work describes a study of the effect of using open stator slots in an interior permanent magnet automotive alternator to increase its effective air gap and thus reduce its iron losses under field‐weakening conditions. Analytical, finite‐element and experimental results are compared for the back‐electromotive waveforms, inductance saturation/torque curves, iron loss and field‐weakening performance characteristics for the alternator with both semi‐closed and with open slots. It is shown for the highly saturated machine considered, that using open stator slots can reduce the field‐weakening iron loss without significantly affecting the machine performance.