Title :
Postfault Operation of an Asymmetrical Six-Phase Induction Machine With Single and Two Isolated Neutral Points
Author :
Hang Seng Che ; Duran, Mario J. ; Levi, E. ; Jones, Maxwell ; Wooi-Ping Hew ; Abd Rahim, N.
Author_Institution :
Power Energy Dedicated Adv. Center, Univ. of Malaya, Kuala Lumpur, Malaysia
Abstract :
The paper presents a study of postfault control for an asymmetrical six-phase induction machine with single and two isolated neutral points, during single open-phase fault. Postfault control is based on the normal decoupling (Clarke) transformation, so that reconfiguration of the controller is minimized. Effect of the single open-phase fault on the machine equations under this control structure is discussed. Different modes of postfault operation are analyzed and are further compared in terms of the achievable torque and stator winding losses. Validity of the analysis is verified using experimental results obtained from a six-phase induction motor drive prototype.
Keywords :
fault tolerance; induction motor drives; machine control; machine windings; asymmetrical six-phase induction machine; control structure; fault-tolerant operation; isolated neutral points; machine equations; normal decoupling transformation; postfault control; postfault operation; single open-phase fault effect; six-phase induction motor drive prototype; stator winding losses; torque; Equations; Induction machines; Rotors; Stator windings; Torque; Windings; Fault-tolerant operation; multiphase machines; variable-speed drives;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2013.2293195
