The performance of three-phase four-wire grid-connected inverter with enhanced power quality

摘要: This paper presents the performance of grid-connected inverter when installed in three-phase four-wire distribution system. The is utilized as power converter to inject power. Furthermore, this also a shunt active filter compensate current unbalance, load harmonics, and reactive demand. It controlled such way therefore it draws or supplies fundamental from grid. control mechanism carried out by balance theory using PI controller. system consists DC voltage regulator, phase-locked loop (PLL), hysteresis controller used which regulates DC-link capacitor be constant. demonstrated through simulation. results simulation show capability an Particularly for nonlinear load, harmonics are compensated effectively.