Frequency support using doubly fed induction and reluctance wind turbine generators

Attya, A. B. and Ademi, S. and Jovanović, M. and Anaya-Lara, O. (2018) Frequency support using doubly fed induction and reluctance wind turbine generators. International Journal of Electrical Power and Energy Systems, 101. pp. 403-414. ISSN 0142-0615 (https://doi.org/10.1016/j.ijepes.2018.04.007)

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Abstract

This paper presents the comparative computer simulations of a commercial doubly-fed induction generator (DFIG) and an emerging brushless doubly-fed reluctance generator (BDFRG) for grid-connected wind turbines in terms of frequency support based on the inertia emulation and blade pitching deloading. The BDFRG features the low operation and maintenance cost by using a fractional inverter, and offers the high reliability of brushless structure with a simpler, more compact 2-stage gearbox design whilst still ensuring competitive performance to its popular slip-ring companion. The implemented benchmark is carefully designed to as certain the relative capabilities of the two wind turbine generator technologies in providing this ancillary service. The results reveal that in spite of the fundamentally different operating principles, the DFIG and the BDFRG are highly aligned from the viewpoint of power system applications.

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