THD mitigation in type-4 Wind Turbine through AFE Back to back converter

In wind power generation systems the type-4 Wind Turbine (WT) is the best option for future research, since WT is completely isolated from AC network through Back to back converter. Hence, full scale back to back is required for high power operation. Total Harmonic Distortion (THD) generated on AC grid by WT is depending of back to back converter switching frequency. In this paper, an AFE back to back converter to transfer high power when m VSCs are placed in parallel is developed, with significant THD reduction through SPWM techniques.

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