Unity Power Factor Control of a Direct-Driven Permanent Magnet Synchronous Wind-Power Generator Based on Three-Level Converter

Abstract:

Direct-driven permanent magnet synchronous generator (PMSG) has become an important research subject besides the double-fed induction generator. With the increasing of unit capacity, the study of topology of high power converters based on multi-level converter is attracting more and more attention. The study of vector control of the direct-driven permanent magnet synchronous wind turbines based on three-level converter is carried out in this paper. Based on the maximum wind-energy capture control of the PMSG, the unity power factor operation of PMSG is realized by controlling the d-axis current to zero in the generator-side converter. A detailed comparative study of two-level system and three-level system is conducted. The simulation results verify the validity of this algorithm.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 2227-2230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.2227
• Online since: October 2011
• Authors: Shu Xi Liu, Shan Li, Juan He
• Keywords: Space Vector Pulse Width Modulation (SVPWM), Three-Level Converter, Unity Power Factor Control, Wind Power Generator

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