Research Article
Current PIλ Control of the Single-Phase Grid Inverter
Table 3
Open-loop system performance.
| | When the system is stable | | Performance index | Expected value | FO-PI | IO-PI |
| | Phase margin (Xo) | 60 | 58.4 | 56.3 | | Amplitude variation (dB) | 0 | 0.0061 | 0.0296 | | Cut-off frequency (rad/s) | 200 | 201 | 6.67e + 003 |
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