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Table 3 Eigenvalues for different filter inductor values

From: Parallel inverter control using different conventional control methods and an improved virtual oscillator control method in a standalone microgrid

Lf (mH) Droop VSM VOC VOC-PSO
0.1 − 0.392 ± 41.56i − 22.31 ± 9.6e3i,
− 22.31 ± 9.6e3i,
− 33.42,− 33.42
− 108.43 ± 51.12i − 46.21 ± 45.35i
0.2 − 0.358 ± 39.24i − 13.62 ± 8.8e3i,
− 13.62 ± 8.8e3i,
− 28.68,− 28.68
− 98.71 ± 56.41i − 41.26 ± 46.17i
0.3 − 0.323 ± 37.38i − 10.14 ± 7.9e3i,
− 10.14 ± 7.9e3i,
− 23.13,− 23.13
− 89.82 ± 61.38i − 39.59 ± 47.28i
0.4 − 0.285 ± 36.49i − 8.26 ± 7.4e3i,
− 8.26 ± 7.4e3i,
− 19.87,− 19.87
− 78.63 ± 66.24i − 37.98 ± 48.36i
0.5 − 0.228 ± 32.17i − 7.44 ± 7.12e3i,
− 7.44 ± 7.12e3i,
− 16.91,− 16.91
− 67.71 ± 69.86i − 35.13 ± 49.71i
0.6 − 0.167 ± 19.38i − 7.41 ± 6.96e3i,
− 7.41 ± 6.96e3i,
− 14.24,− 14.24
− 58.29 ± 72.21i − 33.32 ± 50.92i
0.7 − 0.143 ± 16.82i − 7.40 ± 6.94e3i,
− 7.40 ± 6.94e3i,
− 12.18,− 12.18
− 52.56 ± 73.35i − 31.46 ± 51.65i
0.8 − 0.121 ± 14.54i − 7.39 ± 6.92e3i,
− 7.39 ± 6.92e3i,
− 10.82,− 10.82
− 46.75 ± 74.12i − 29.89 ± 52.57i
0.9 − 0.115 ± 12.84i − 7.38 ± 6.89e3i,
− 7.39 ± 6.89e3i,
− 8.14,− 8.14
− 40.96 ± 75.52i − 26.46 ± 53.96i
1 − 0.02 ± 10.37i − 7.36 ± 6.7e3i,
− 7.36 ± 6.7e3i,
− 6.31,− 6.31
− 35.12 ± 75.98i − 24.21 ± 54.65i