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Injecting positive‐sequence current virtual synchronous generator control under unbalanced grid

For unbalanced three-phase grid voltage, the traditional Virtual Synchronous Generator (VSG) control cannot overcome the distortion of output current. For this reason, a new control method is proposed in this study. The additional positive-sequence current adjuster to the traditional VSG control allows the reference current to track the positive-sequence current, and inhibit the negative-sequence components. Meanwhile, the oscillations in the power system are decreased. The proposed method has been simulated using Matlab/Simulink and verified experimentally on actual platform. The reliability and effectiveness of the proposed control method have also been compared with the traditional VSG control.