Combined Control of DFIG-Based Wind Turbine and Battery Energy Storage System for Frequency Response in Microgrids

Luis. A. G. Gomez, Ahda P. Grilo, M. B. C. Salles and A. J. Sguarezi Filho
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Luis. A. G. Gomez: Laboratory of Advanced Electric Grids-LGrid, Polytechnic School, University of São Paulo - USP, São Paulo CO 05508-010, Brazil
Ahda P. Grilo: Center for Engineering, Modeling and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo Andre CO 09210-580, Brazil
M. B. C. Salles: Laboratory of Advanced Electric Grids-LGrid, Polytechnic School, University of São Paulo - USP, São Paulo CO 05508-010, Brazil
A. J. Sguarezi Filho: Center for Engineering, Modeling and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo Andre CO 09210-580, Brazil

Energies, 2020, vol. 13, issue 4, 1-17

Abstract: This paper presents a novel methodology for frequency control of a microgrid through doubly fed induction generator (DFIG) employing battery energy storage system (BESS) and droop control. The proposed microgrid frequency control is the result of the active power injection from the droop control implemented in the grid side converter (GSC) of the DFIG, and the BESS implemented in the DC link of the back-to-back converter also in the DFIG. This methodology guarantees the battery system charge during operation of the connected DFIG in the network, and the frequency control in microgrid operation after an intentional disturbance. In order for the DFIG to provide frequency support to the microgrid, the best-performing droop gain value is selected. Afterwards its performance is evaluated individually and together with the power injected by the battery. The power used for both battery charging and frequency support is managed and processed by the GSC without affecting the normal operation of the wind system. The simulation tests are performed using Matlab/Simulink toolbox.

Keywords: battery energy storage system (BESS); battery management; doubly fed induction generator (DFIG); droop control; frequency control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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