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Torsional Vibrations in the Drivetrain of DFIG- and PMG-Based Wind Turbines: Comparison and Mitigation

[+] Author Affiliations
Fariba Fateh, Warren N. White, Don Gruenbacher

Kansas State University, Manhattan, KS

Paper No. DSCC2015-9953, pp. V002T21A004; 7 pages
doi:10.1115/DSCC2015-9953
From:
  • ASME 2015 Dynamic Systems and Control Conference
  • Volume 2: Diagnostics and Detection; Drilling; Dynamics and Control of Wind Energy Systems; Energy Harvesting; Estimation and Identification; Flexible and Smart Structure Control; Fuels Cells/Energy Storage; Human Robot Interaction; HVAC Building Energy Management; Industrial Applications; Intelligent Transportation Systems; Manufacturing; Mechatronics; Modelling and Validation; Motion and Vibration Control Applications
  • Columbus, Ohio, USA, October 28–30, 2015
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-5725-0
  • Copyright © 2015 by ASME

abstract

In this paper, torsional vibrations in a five-mass drivetrain of a doubly fed induction generator (DFIG)-based and a permanent magnet generator (PMG)-based wind turbine are investigated through simulations. The simulated model includes aerodynamics of a 750kW wind turbine, as well as the dynamics of the generator, gearbox, and back-to-back power converters. In this study, the effectiveness of a sliding mode based control scheme to damp the drivetrain torsional vibrations for the events of a voltage dip occurring on the power grid and a wind speed variation is presented. The simulation results demonstrate mechanical disturbances have similar impacts on the drivetrain of DFIG-based and PMG-based wind turbines. However, the back-to-back converters in a PMG-based wind turbine effectively isolate the effects of power oscillations on the drivetrain.

Copyright © 2015 by ASME

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