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Modeling and control of a doubly fed induction generator with a disturbance observer: a stator voltage oriented approach

Özsöy, Eşref Emre and Golubovic, Edin and Şabanoviç, Asif and Boğosyan, Seta and Gökaşan, Metin (2016) Modeling and control of a doubly fed induction generator with a disturbance observer: a stator voltage oriented approach. Turkish Journal of Electrical Engineering & Computer Sciences, 24 (3). pp. 961-972. ISSN 1300-0632 (Print) 1303-6203 (Online)

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Official URL: http://dx.doi.org/10.3906/elk-1312-104

Abstract

The popularity of renewable energy conversion systems, and especially of wind energy, has been growing in recent years. Doubly fed induction generator (DFIG)-based wind energy systems are extensively used due to their wide range of active and reactive power controllability. Conventional DFIG control structures consist of decoupled PI rotor current controllers with stator flux orientation and machine parameter-dependent compensating terms. The accuracy of stator flux calculations is dependent on how accurately the stator resistance is known. Integration problems also exist and additional low-pass filters are implemented to accurately calculate the stator flux. In the current study, machine-dependent compensating terms are estimated with a rst-order low-pass filter disturbance observer. Therefore, a single proportional (P) controller is sufficient to control decoupled rotor currents. The proposed controller structure is implemented on a MATLAB/Simulink platform with the parameters of 500 kW DFIG used in the M_ILRES (Turkish National Wind Energy) project. The proposed controller is also experimentally validated in an experimental setup.

Item Type:Article
Uncontrolled Keywords:Doubly fed induction generator; disturbance observer; wind energy
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-4661 Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
ID Code:29745
Deposited By:Asif Şabanoviç
Deposited On:09 Nov 2016 10:52
Last Modified:09 Nov 2016 10:52

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