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

Protection and Control of Modern Power Systems

Table 3 Eigenvalues for different filter inductor values

L_f (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