Research Article

Stability and Reactive Power Sharing Enhancement in Islanded Microgrid via Small-Signal Modeling and Optimal Virtual Impedance Control

Table 4

Microgrid parameters.

Inverter parameters (10 kVA rating)
ParameterValueParameterValue

fs8 kHz50 uF
1.35 mH0.1 Ω
0.35 mH0.03 Ω

Droop control parameters

9.4 × 10−5 (=0.3% droop)1.3 × 10−3 (=2% droop)
Wn314.16 rad/sec381 V
Wc31.41 rad/sec

Voltage controllerCurrent controller

0.037393
10.51.6 × 104
Bandwidth400 HzBandwidth1.6 kHz
F0.75
Line and load parameters (see Figure 2)