Demonstration of Synchronous Motor Start by Rotor Polarity Inversion

@article{PrezLoya2018DemonstrationOS,  title={Demonstration of Synchronous Motor Start by Rotor Polarity Inversion},  author={J. Jos{\'e} P{\'e}rez-Loya and C. Johan D. Abrahamsson and Fredrik Evestedt and Urban Lundin},  journal={IEEE Transactions on Industrial Electronics},  year={2018},  volume={65},  pages={8271-8273},  url={https://api.semanticscholar.org/CorpusID:46936078}}
A method to start a synchronous machine without a damper cage is presented, achieved by inverting the polarity of the rotor field winding in a timely manner with respect to the rotating stator field.

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