Synchronous mode operation of DFIG based wind turbines for improvement of power system inertia

Amila Wickramasinghe, Sarath Perera, Ashish P. Agalgaonkar and Lasantha Meegahapola

Renewable Energy, 2016, vol. 95, issue C, 152-161

Abstract: Inertia emulation methods exist to compensate for the reduced inertial support provided by doubly fed induction generator (DFIG) based wind turbines. Instead of emulating inertia, this paper proposes to temporarily convert DFIGs to synchronous generators, enabling supply of real inertia to the system. In order to achieve this, the voltage supplied to the DFIG rotor needs to be made independent of the grid frequency. Feeding the rotor with a fixed dc voltage while it is rotating at synchronous speed enables the DFIG to operate in synchronism with the grid and couple the inertia of its rotating mass to the power system. The rotor side converter of a DFIG can be controlled to function as the dc voltage source, allowing convenient switching between the two operation modes according to system requirements.

Keywords: Doubly fed induction generator; Emulated inertia; Inertial response; Synchronous mode (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:95:y:2016:i:c:p:152-161

DOI: 10.1016/j.renene.2016.04.010

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