| Abstract |
Multiphase machines have been used widely in electric ship propulsion, air-craft drives, locomotivetraction, and high-power industrial applications. The fault-tolerant capability is one of the mostinteresting topics in multiphase stand-alone motor drives since no additional hardware is required toprovide the additional degree of freedom if they are properly configured. The fault-tolerant controlstrategies, suitable for open-phase fault operation of five-phase concentrated-full-pitch windinginduction motor drives, are studied in this paper. In order to compare the performance of the abovestrategies, a more general mathematical model considering third harmonic component based onsymmetric component theory is established. Then expressions of the average torque, torque ripple,total copper loss and efficiency are derived. Finally, comparative results can be used as guidelines forthe engineering application. |
