© The Institution of Engineering and Technology
This Letter proposes a multi-objective self-synchronised virtual synchronous generator (VSG) strategy in unbalanced power grid. A second-order generalised integrator is applied to the traditional VSG strategy to deal with the double-frequency ripple components. Therefore, the precision of the self-synchronisation process can be confirmed, and the VSG can follow the power references of both DC and double-frequency ripple components. On this basis, the power compensation strategy is combined with the VSG strategy to achieve different control objectives. Comparative experimental studies of the traditional VSG and proposed VSG with different targets are conducted to verify the effectiveness of the proposed strategy.
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Multi-objective self-synchronised virtual synchronous generator in unbalanced power grid