Title :
Converter Power Loss Analysis in a Fault-Tolerant Permanent-Magnet Synchronous Motor Drive
Author :
Stabile, Antonino ; Estima, Jorge O. ; Boccaletti, Chiara ; Marques Cardoso, Antonio J.
Author_Institution :
Studio Energie Rinnovabili, Rome, Italy
Abstract :
Power converters are complex devices subject to failures that can lead to undesired stops. For this reason, many fault-tolerant topologies and strategies have been deeply studied, mainly focusing on improving the electromechanical behavior of the reconfigured drive after the fault. However, it is also very important to evaluate the possible increase of power losses. In this paper, a power loss analysis is performed on a current-controlled three-phase inverter supplying a permanent-magnet synchronous motor (just chosen as an example), for all the operating modes, starting from the fault occurrence until the faulty operation mode is established. This is particularly important because the effectiveness of a fault-tolerant control strategy depends on the possibility to maintain a continuous operation. The latter is ensured only if there is no such increment of the losses that the survival of the component is at risk. The simulations are validated by means of experimental tests, and the results are discussed. The method can be easily applied to other topologies and reconfiguration strategies.
Keywords :
fault diagnosis; fault tolerant control; invertors; permanent magnet motors; synchronous motor drives; converter power loss analysis; current-controlled three-phase inverter; electromechanical behavior; fault-tolerant control strategy; fault-tolerant permanent-magnet synchronous motor drive; fault-tolerant topology; faulty operation mode; reconfiguration strategy; Circuit faults; Fault tolerance; Insulated gate bipolar transistors; Inverters; Semiconductor diodes; Switches; Transient analysis; Diodes; Fault diagnosis; Fault tolerance; Insulated gate bipolar transistors; Inverters; Loss measurements; Permanent magnet machines; Switching loss; Thermal stresses; Variable speed drives; fault diagnosis; fault tolerance; insulated-gate bipolar transistors; inverters; loss measurements; permanent-magnet machines; switching loss; thermal stresses; variable-speed drives;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2014.2385652