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The applied control strategy must be robust to permanent magnet synchronous generator (PMSG) parameter variations and unknown disturbances to achieve the stability of generating operation of permanent magnet synchronous generating system. The techniques of nonlinear feedback linearization and internal model control were combined to propose a novel PMSG control strategy. In the proposed control strategy, a PMSG mathematical model in stator coordinate frame was used as the internal model, and then the output error dynamic system between actual PMSG and internal model was expanded into a new nonlinear error system by one-order low pass filters. At last, the stator voltage vector reference was calculated with the help of the input-output linearization theory according to the new error system. The experimental results show that the generating system with the proposed control strategy has an ideal tracking performance of torque and stator flux linkage amplitude, and a high robust ability to parameter changes of PMSG and load disturbance, and quick and smooth control performance for DC voltage with low operation noise. © 2013 Chinese Society for Electrical Engineering.
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Proceedings of the Chinese Society of Electrical Engineering
ISSN: 0258-8013
CN: 11-2107/TM
Year: 2013
Issue: 6
Volume: 33
Page: 128-135
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