2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) 2012
DOI: 10.1109/pedg.2012.6254058
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Inverters for grid connection of photovoltaic systems and power quality: Case studies

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Cited by 18 publications
(5 citation statements)
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“…The main results demonstrate that, in the presence of high PV power injection, the voltage variations also in short term (on second/minute scales) are well limited within the +/−10% of the RMS values in LV grids, while the occurrence of frequency variations is not realistic [33]. On the other hand, considering the grid impedance negligible in the majority of the applications, the voltage waveform is poorly affected by harmonic distortion [34]. Also in presence of non-negligible harmonic distortion of the waveforms of current injected into the grid (>5% of the rated current) and unbalance (some percent of the positive sequence component), in a three-phase system, the consequent harmonic distortion (2-3% of the rated value) and unbalance of the grid voltage (<1% of the positive-sequence component) is within the limits of the European Standards of power quality [35].…”
Section: Simulation Of Grid-connected Pv Systemmentioning
confidence: 91%
“…The main results demonstrate that, in the presence of high PV power injection, the voltage variations also in short term (on second/minute scales) are well limited within the +/−10% of the RMS values in LV grids, while the occurrence of frequency variations is not realistic [33]. On the other hand, considering the grid impedance negligible in the majority of the applications, the voltage waveform is poorly affected by harmonic distortion [34]. Also in presence of non-negligible harmonic distortion of the waveforms of current injected into the grid (>5% of the rated current) and unbalance (some percent of the positive sequence component), in a three-phase system, the consequent harmonic distortion (2-3% of the rated value) and unbalance of the grid voltage (<1% of the positive-sequence component) is within the limits of the European Standards of power quality [35].…”
Section: Simulation Of Grid-connected Pv Systemmentioning
confidence: 91%
“…This first analysis does not highlight the partial shading phenomenon, which affects only some of the PV arrays. The roof of the building is the typical triangular-shape shed and presents tie-beams which strengthen the top structure but create a periodic shading over some PV arrays in the early morning and in the afternoon [26]. The shade evolution causes a diagonal partial shading over the modules, like a series of moving rod-shaped shades (see Fig.…”
Section: Real Photovoltaic System and Standard Power Quality Indicatorsmentioning
confidence: 99%
“…To prevent this problem a bypass diode is connected across a certain number of cells. The use of bypass diodes mitigates the problem of hot spots, but it complicates the electrical characteristics of the array, as experimentally proved in [3]. Due to the action of these diodes multiple peaks appear in the P-V characteristics of the array under PSC.…”
Section: Introductionmentioning
confidence: 99%