Design of optimal controller for DSTATCOM using differential evolution technique

In this paper a microgrid model has been taken which comprises a DFIG based wind firm, a solar farm and the normal grid voltage. A DSTATCOM is used in this model for the mitigation of harmonics. This paper also presents us a novel controller for DSTATCOM the SRF(Synchronous reference frame) controller. The Kp and the Ki values of the two PI blocks present in the proposed controller has been optimized in this paper using DE(Differential Evolution). The model is simulated in Simulink/MATLAB and the results are noted. The THD values are observed to be less than the IEEE standards. The results has also been compared with that of PSO and is found to be most effective and are thereby accepted.

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