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1.1 Solbian panels can be rolled?
You can not roll them, but their flexibility allows it to adapt to the mounting surface. The maximum flexibility guaranteed is 25%, although in fact they are much more flexible.
1.2 How much efficiency have Solar Light panels?
Their efficiency is comparable to that of traditional panel made in glass, but their weight is about 1/8. In addition, upon request, they can be made with back-contact cells with high efficiency (22%).
1.3 Do they work anyway when it is cloudy?
Solbian's panels are made of crystalline silicon cells, and they work well with direct light.
1.4 What happens in case of shading on a piece of the panel?
A panel is composed of many solar cells connected in series. When a cell is located in the shadow the output decreases in proportion to the decrease of light, causing a bottleneck to the flow of electricity throughout the panel. Consequently decreases the power and also changes the curve of the Current-Voltage of the panel, which is no longer simply decreasing, but has a complicated pattern. In this situation, the ordinary charge controllers, even the MPPT, which is available commercially, are not usually able to optimize the performance of the panel. If instead you are using our electronic system Sun Control on each panel, the particular and fast MPPT system recognizes in real time the change in electrical characteristics, and therefore allows the panel to obtain the maximum output power.
1.5 What happens in case of shading on some panels of a photovoltaic system?
The current generated by the solar panel is proportional to the light incident on it. So, through shaded panels or badly exposed ones passes less current than the one that passes through the panels subjected to direct sunlight. If the panels are connected in series, as it is usually to do to obtain an higher voltage (V) than that of the single panel, those in the shade are the current bottleneck of the whole system in series. Using our Sun Control devices on each panel this problem is overcome because the panels are all in parallel, that means that they are independent. It is up to the Sun Control to bring the voltage to that required, while ensuring an efficient MPPT. This is a typical critical situation for the sustainable mobility, such as boating, but where our solutions are dramatically better than standards.
1.6 It is better to use small or large panels?
In a panel there isn't a direct control on the single cell and then, as mentioned in FAQ 1.4, the current flowing through the cell that produces less power, for example because it is in shadow, conditions all the panel. Larger is the panel, more possibilities to find part of it in shadow. So, especially in sustainable mobility, as in sailing, it is strongly recommended to use smaller panels, not connected in series (otherwise it would be equivalent to a single large panel), and use an effective and fast MPPT controller for the panel as specified in the FAQ 1.5 .
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