Title :
Comparison of different fault-tolerant control strategies for seven-phase induction motor drives
Author :
Casadei, D. ; Mengoni, M. ; Serra, G. ; Tani, A. ; Zarri, L.
Author_Institution :
Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy
Abstract :
In this paper some different control strategies, suitable for open-phase fault operation of seven-phase current regulated induction motor drives, are presented. These strategies, which are valid in steady-state as well as in transient operating conditions, are compared in terms of stator and rotor copper losses and torque pulsations. The comparison is carried out by means of an opportune mathematical model of the machine that, exploiting the properties of the multiple space vector representation of multi-phase systems, takes into account the first five spatial harmonics of the air-gap magneto motive force. Some experimental tests carried out on a seven-phase asynchronous motor drive prototype confirm the characteristics of the proposed control strategies and the results of the theoretical comparison.
Keywords :
induction motor drives; machine control; mathematical analysis; rotors; stators; torque; air-gap magneto motive force; fault-tolerant control; multi-phase systems; open-phase fault operation; opportune mathematical model; rotor copper losses; seven-phase induction motor drives; spatial harmonics; stator copper losses; torque pulsations; Air gaps; Copper; Fault tolerance; Induction motor drives; Magnetic properties; Mathematical model; Rotors; Stators; Steady-state; Torque; Adjustable speed drive; Pulse Width Modulation (PWM); fault handling strategy; induction motor; multiphase drive;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
