RT Journal Article
T1 DC-signal injection for stator-resistance estimation in symmetrical six-phase induction motors under open-phase fault
A1 Gómez Yepes, Alejandro
A1 Abdel-Majeed, Mahmoud Said
A1 Che, Hang Seng
A1 Abdel-Khalik, Ayman Samy
A1 Ahmed, Shehab
A1 Doval Gandoy, Jesús
K1 3307 Tecnología Electrónica
AB Multiphase machines are often chosen due to theirenhanced fault tolerance. Six-phase ones are especially convenientbecause they may be fed by off-the-shelf three-phase converters.In particular, those with symmetrical windings offer superiorpostfault capabilities. On the other hand, estimation of the statorresistance is important for purposes such as thermal monitoringand preserving control performance. Resistance estimation by dcsignal injection provides low sensitivity to parameter deviationscompared with other techniques. It has previously been shownthat the dc signal can be added in the non-torque-producing (xy) plane of a six-phase machine to avoid the torque disturbancesthat typically arise in three-phase machines. However, extendingthis method to the case of an open-phase fault (OPF) is notstraightforward, because of the associated current restrictions.This paper addresses dc-signal injection in a symmetrical sixphase induction motor with an OPF. It is shown that, in contrastto healthy operation, the postfault dc injection should be carefullyperformed so that minimum copper loss, peak phase currentand zero-sequence braking torque are achieved. A solution thatattains optimum performance in all these aspects simultaneouslyis proposed. Adapted controller and resistance estimation arealso presented. Experimental results confirm the theory
PB IEEE Transactions on Industrial Electronics
SN 02780046
YR 2023
FD 2023-06
LK http://hdl.handle.net/11093/7182
UL http://hdl.handle.net/11093/7182
LA eng
NO IEEE Transactions on Industrial Electronics, 70(6): 5444-5453 (2023)
NO Ministry of Higher Education, Malaysia | Ref. Scheme FP090-2020
DS Investigo
RD 09-sep-2024