Abstract
Zero-crossing distortion has been observed in the ac output current produced by some grid-connected photovoltaic inverters and this can cause a resonant response between the grid impedance and the inverter filter capacitor. In some cases, particularly with large numbers of parallel-connected inverters and with weak grids, the resonance can cause voltage distortion that may be large enough to disturb other nearby equipment. A number of commercially available inverters were tested to investigate the mechanisms of this distortion. A model was then developed to allow further simulations with different numbers of inverters and varying levels of distortion to be performed.
Original language | English |
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Pages (from-to) | 558-565 |
Number of pages | 8 |
Journal | IEEE Transactions on Industrial Electronics |
Volume | 52 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2005 |