A local harmonic compensation and power sharing control strategy in islanded microgrid based on PI+repetitive control

The nonlinear loads would cause a large number of harmonics, and result in various power quality problems in the microgrid. With the local nonlinear load and the public linear load, based on Pl+repetitive control, this paper proposes a control strategy that the DGs compensate the local harmonic current and share the power of public linear load. The simulation results show that the proposed control strategy can maintain the stable operation of the microgrid in a high power quality mode without another external equipment.