The mathematical modeling of open-switch faults in two-level machine-side converters and the fault-tolerant current control of isotropic permanent-magnet synchronous generators are discussed in this paper. The proposed converter model is generic for any open-switch fault and independent of the operation mode of the electrical machine. The proposed fault-tolerant current control system gives improved control performance and reduced torque ripple under open-switch faults by modifying the antiwindup strategy, adapting the space-vector modulation scheme, and by injecting additional reference currents. The theoretical derivations of model and control are validated by comparative simulation and measurement results.
CITATION STYLE
Hackl, C. M., Pecha, U., & Schechner, K. (2019). Modeling and Control of Permanent-Magnet Synchronous Generators under Open-Switch Converter Faults. IEEE Transactions on Power Electronics, 34(3), 2966–2979. https://doi.org/10.1109/TPEL.2018.2855423
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