Review On Voltage Stability of DFIG Wind Turbine By Using DVR

Electrical Engineering

This paper proposes a low-voltage journey-thru method of a doubly fed induction generator (DFIG) wind turbine system via the usage of the use of of a dynamic voltage restorer (DVR). Also studied the utility of a dynamic voltage restorer (DVR) involved to a wind-turbine-driven DFIG. For tremendous control of the DVR, digital all-pass filters are used for extracting the positive-sequence element from the unbalanced grid voltage because they have the advantages of giving a favored phase shift and no magnitude reduction over traditional low- or high-pass filters. Using the positive-sequence component, the phase angles for the positive- and negative-sequence elements of the grid voltage are derived. A control algorithm for the DVR that is dual voltage controllers most effective is utilized for the two collection factors in the dq synchronous reference frame. In order to obtain the energy rating reduction of the DVR, the stator energy reference for the DFIG is decreased throughout faults. In addition, a control scheme of pitch angle device is utilized to stabilize the operation of the wind turbine system in the event of grid faults. PSCAD/EMTDC simulations exhibit the effectiveness of the proposed method and a feasibility of decreasing the energy rating of DVR for the fault ride via functionality of DFIG. The validity of the proposed control scheme for the DVR has additionally been proven by way of experimental results. The low-voltage experience-through of the DFIG the utilization of a crowbar that does no longer enable continuous reactive power manufacturing as evaluate with effectiveness of the DVR.

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