Research Article
An Improved P&O Based MPPT for PV Systems with Reduced Steady-State Oscillation
Table 4
The comparison of various P&O algorithm.
| | Algorithm | Step irradiance decrease (500 W/m2 to 300 W/m2) | | Step irradiance increase (300 W/m2 to 500 W/m2) | | Tracking time (mS) | Deviation (W) | Oscillation (W) | Tracked power (W) |
| | Conventional P&O | 350 | 3 | 2 | 14.50 | | 600 | 7.8 | 2 | 20.00 |
| | Conventional INC | 340 | 2.7 | 2 | 14.55 | | 580 | 7.5 | 2 | 20.05 |
| | VSS P&O | 320 | 2.5 | 1.5 | 14.90 | | 420 | 9 | 1.5 | 20.25 |
| | ASS INC | 250 | 4.5 | 1 | 14.70 | | 350 | 12 | 1 | 20.30 |
| | Modified P&O | 280 | 1.5 | 0.2 | 15.50 | | 300 | 7 | 0.2 | 21.00 |
| | Proposed P&O | 260 | 0.8 | 0.2 | 15.50 | | 270 | 6.8 | 0.2 | 21.00 |
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