| Abstract |
This paper considers a three-phase four-wire grid-interfacing voltage-source inverter with local unbalancedand distorting loads. A sequence-decoupled resonant control strategy is proposed to support thelocal voltage on top of conventional active power regulation. The local voltage at the point of commonconnection, which is traditionally used for grid synchronization for distributed generators, is also usedfor sensing unbalanced and harmonic voltages. Therefore, measurements of load currents for unbalancedand harmonic compensation can be eliminated with the proposed approach. |
