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Various dynamic slip control topologies for control of grid connected wound rotor induction generator (WRIG) are presented in this paper. An elegant control technique based on rotor voltage measurement for mitigation of output power fluctuations in grid connected schemes of WRIG, due to wind speed variation and tower shadow effect has been proposed and explained. The control of WRIG is achieved by employing the principle of chopper control for varying the rotor voltage (resistance). This technique has been utilized to achieve desired amount of real power flow into the grid from WRIG. The described dynamic slip control topologies and the control algorithm have been simulated using PSCAD/EMTDC software and are experimentally validated.
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Vinothkumar et al. (2010) studied this question.
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