Transient performance analysis of wind-power induction generators
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Doctoral thesis (article-based)
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TKK dissertations, 45
AbstractA coupled field-circuit simulator for the transient analysis of wind energy conversion systems with a doubly fed induction generator (DFIG) was developed and experimentally validated. Short-term grid disturbance and ride-through analyses were carried out for a 1.7-MW DFIG wind-power conversion system. Two simulation models of the wind-power DFIG were compared to reveal the consequences of the different modeling approaches for the accuracy of transient analysis. The DFIG was represented in the simulator by an analytical two-axis model with constant lumped parameters or by a finite element method-based model. The model of the generator was coupled with a model of the crowbar-protected and direct torque-controlled frequency converter, a model of the main transformer, and a simple model of the grid. In addition, a detailed model of the wind turbine was compared with a simplified model that omits the model of the mechanical part of the wind turbine. The simulator was experimentally validated by a 1.7-MW full-scale measurement set-up. The comparison between the simulated and measured results shows reasonable agreement. The analytical model of the DFIG, however, manifests certain drawbacks that are overcome by using a FEM model. The developed coupled field circuit-based simulator has proved to be capable and reliable for modeling of complicated power electronics and electrical machine set-ups and thus is a useful tool for the development and optimization of wind-power generators.
coupled simulator, crowbar, doubly fed induction generator, transient analysis, ride-through, wind turbine
- Seman, S., Niiranen, J., Kanerva, S., Arkkio, A. 2004. Analysis of a 1.7 MVA Doubly Fed Wind-Power Induction Generator during Power Systems Disturbances. Proceedings of the Nordic Workshop on Power and Industrial Electronics (NORPIE 2004), 14-16 June 2004, Trondheim, Norway, 6 p., CD-ROM. [article1.pdf] © 2004 by authors.
- Seman, S., Kanerva, S., Niiranen, J., Arkkio, A. 2004. Transient Analysis of Wind Power Doubly Fed Induction Generator Using Coupled Field-Circuit Model. Proceedings of the 16th International Conference on Electrical Machines (ICEM 2004), 5-8 September 2004, Cracow, Poland, 6 p., CD-ROM. [article2.pdf] © 2004 by authors.
- Kanerva, S., Seman, S., Arkkio, A. 2005. Inductance Model for Coupling Finite Element Analysis with Circuit Simulation. IEEE Transactions on Magnetics, Vol. 41, Issue 5, May 2005, pp. 1620-1623. [article3.pdf] © 2005 IEEE. By permission.
- Seman, S., Niiranen, J., Kanerva, S., Arkkio, A., Saitz, J. 2006. Performance Study of a Doubly Fed Wind-Power Induction Generator under Network Disturbances. IEEE Transactions on Energy Conversion, accepted for future publication, 8 p. [article4.pdf] © 2006 IEEE. By permission.
- Seman, S., Iov, F., Niiranen, J., Arkkio, A. 2006. Comparison of Simulators for Variable-Speed Wind Turbine Transient Analysis. International Journal of Energy Research, Vol. 30, Issue 9, pp. 713-728. [article5.pdf] © 2006 John Wiley & Sons. By permission.
- Seman, S., Niiranen, J., Arkkio, A. 2006. Ride-Through Analysis of Doubly Fed Induction Wind-Power Generator under Unsymmetrical Network Disturbance. IEEE Transactions on Power Systems, accepted for future publication, 7 p. [article6.pdf] © 2006 IEEE. By permission.