Control of Battery Energy Storage System for Wind Turbine based on DFIG during Symmetrical Grid Fault

Abstract

Abstract. This paper presents a specific control strategy of Doubly Fed Induction Generator (DFIG) conceived for a wind turbine system operating under electrical grid disturbance. Two mains aspects related to DFIG behavior are studied: fluctuation of its output power and Low-Voltage Ride Trough capability (LVRT) of wind turbine generator system. In order to smooth the output power injected in the electrical grid and to improve dynamic behavior of a variable speed wind turbine generator system under symmetrical voltage dip, a control strategy of the Battery Energy Storage System (BESS) is proposed. Simulations have been carried out in Matlab environment, and the results validate the effectiveness of our control.

Design and control of DFIG with SMES storage under symmetrical grid fault

“…The operation of the DFIG is braked by two obstacles [13]− [15]; i) sudden and random change in wind speed; causes fluctuating power output; and ii) fault in the electrical network causes; overcurrent in winding of the rotor and an overvoltage in DC link which can impacts the performance of the WT based DFIG, and can damage the power device. In the literature, we find two categories of solutions; first is the contribution in command algorithm, the second is use of an additional equipment [8].…”

Advanced control strategy of DFIG during symmetrical grid fault

“…First problem is: the transient current appearing in the coils of the rotor; Second problem is the DC bus overvoltage, that can cause performance degradation in DFIG system perturbing the global system behavior it could damage the power converters [5], [6]. With the increased DFIG penetration in electrical grid, performance of the DFIG and output power fluctuations injected under fault become research subjects [7].…”