Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/4886
Title: Improved LVRT Capability and Power Smoothening of Dfig Wind Turbine Systems
Authors: Nguyễn, Thanh Hải
Lee, Dong-Choon
Keywords: FIG
ESD
LVRT
Power smoothening
Wind power
Issue Date: 2011
Series/Report no.: Journal of Power Electronics;11 .- p.568-575
Abstract: This paper proposes an application of energy storage devices (ESD) for low-voltage ride-through (LVRT) capability enhancement and power smoothening of doubly-fed induction generator (DFIG) wind turbine systems. A grid-side converter (GSC) is used to maintain the DC-link voltage. Meanwhile, a machine-side converter (MSC) is used to control the active and reactive powers independently. For grid disturbances, the generator output power can be reduced by increasing the generator speed, resulting in an increased inertial energy of the rotational body. Design and control techniques for the energy storage devices are introduced, which consist of current and power control loops. Also, the output power fluctuation of the generator due to wind speed variations can be smoothened by controlling the ESD. The validity of the proposed method has been verified by PSCAD/EMTDC simulation results for a 2 MW DFIG wind turbine system and by experimental results for a small-scale wind turbine simulator.
URI: http://dspace.ctu.edu.vn/jspui/handle/123456789/4886
Appears in Collections:Tạp chí quốc tế

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