MPC-Based Arctan Droop Control Strategy of the Parallel Inverter System in an Islanded AC Microgrid

Table 3

Tested data for different VSI’s power outputs and impedances.

Parameter	Value
DC bus voltage	700 V
Nominal bus frequency	50 Hz
Nominal voltage	380 V
Sampling time	Ts = 30 us
Line impedance, DG1	0.528 mH, 1.284 Ω
Line impedance, DG2	0.352 mH, 0.856 Ω
Load 1	6000 W, 1500 VAr
Load 2	6000 W, 1500 VAr
Droop coefficients, DG1	,
Droop coefficients, DG2	,
Virtual impedance	Virtual resistance of DG1 = 0 Ω
	Virtual resistance of DG2 = 0 Ω
	The virtual inductance of DG1 = 1 mH
	The virtual inductance of DG2 = 1.176 mH
The allowable frequency range of variation	50 Hz ± 1%
The allowable voltage range of variation	380 V ± 5%