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Several techniques have been suggested to enhance the ability of multi-megawatt DFIG wind turbines to contribute in arresting system frequency decay and provide primary control power upon power imbalances. Among such techniques, the capability of temporary active power over-production was shown to be useful in limiting the initial frequency dip in hydro dominated systems. However, the excess active...
The increased penetration of wind power by doubly fed induction generator (DFIG) in power system results in higher frequency excursion and increased rate of change of frequency in the event of generation loss or increased load demand. This paper presents the added feature of frequency regulation capability of the DFIG by incorporating an extra frequency control support function, tested on an interconnected...
Power system with high penetration of wind power requires a developed control strategy to obtain optimal dynamic performance under load variations. An algorithm utilizing internal model control (IMC) design method for the control of doubly fed induction generator (DFIG) operating at variable speed constant frequency is proposed. The proposed structure is a stand-alone generating system and feeds a...
This paper presents a non linear control strategy for wind farms equipped with doubly-fed induction generators (DFIG) operating in a network with a complex load. First, taking into account an unitary power factor, droop (proportional) and inertial (derivative) classical controls are incorporated by considering a negative load behavior of the wind farm. Then, a wind farm control law based on the Passivity...
Nowadays, many economic and environmental benefits derived from distributed generation (DG) enable DG to play an increasingly important role in distribution networks satisfying the expanding power demand. Doubly-fed induction generator (DFIG) based wind turbine has been widely used for DG due to its many advantages such as high efficiency, fine controllability and improved power quantity. In the situation...
The application of a doubly fed induction generator (DFIG) as a suitable generating scheme in a remote or isolated communities is presented in this paper. Remote area power supply (RAPS) system, a dummy load and its controller with energy storage system (ESS) are identified as the key components. The dummy load is used to absorb the power associated with over generation. The battery storage system...
Self Excited squirrel cage Induction Generator (SEIG), is used widely to convert mechanical wind energy to electricity, due to their low cost, small size, no need of separate dc source and brushes. This paper proposes a new reduced order model for small wind energy system consisting of: Squirrel Cage Induction with excitation capacitors, D-Statcom, loads and mechanical parameters. Comparing with conventional...
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