Title :
Experimental fault-tolerant control of a PMSM drive
Author :
Bolognani, Silverio ; Zigliotto, Mauro ; Zordan, Marco
Author_Institution :
Dept. of Electr. Eng., Padova Univ., Italy
fDate :
31 Aug-4 Sep 1998
Abstract :
The paper describes the study and experimental verification of remedial strategies against failures occurring in the inverter power devices of a PM synchronous motor drive. The basic idea for designing a fault-tolerant drive consists in incorporating a fourth leg into the inverter stage, which has the same topology and capabilities of the other conventional ones. This represents a minimal redundancy that, when appropriately connected and controlled, allows the drive to face a power device fault condition with smooth torque. The proposed control strategy also fits interior permanent magnet motor drives, which can operate even above the base speed, where a proper flux-weakening current control is adopted
Keywords :
fault tolerance; machine control; machine testing; permanent magnet motors; redundancy; reliability; synchronous motor drives; PM synchronous motor drive; control performance; control strategy; fault-tolerant control; fault-tolerant drive design; flux-weakening current control; interior permanent magnet motor drives; machine reliability; power device fault condition; remedial strategies; Circuit faults; Fault tolerance; Inverters; Leg; Permanent magnet motors; Redundancy; Synchronous motors; Topology; Torque control; Voltage;
Conference_Titel :
Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE
Conference_Location :
Aachen
Print_ISBN :
0-7803-4503-7
DOI :
10.1109/IECON.1998.724292
