Advantage of The SR-G Grid Tie Power System
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There are many advantages of SGPV compare with the traditional grid tie power system.
1. Low cost and easy installation - SGPV can make full use of all types of buildings’ surface
that face to the sun in the city as well as fast and easy installation of solar modules and grid tie
inverter. It just needs very low maintenance costs.
2. Free combination - SGPV can be used as a separate grid tie system and can be setup as a
large solar array with many of them. The quantity of SGPV in the array is just according to your
desire. If you are planning to install a grid-tie PV system, in a general way, the solar array and
inverter need to be carefully matched to ensure that the inverter’s voltage and power limits are
not exceeded. When you want to increase more solar panels, and if the total power of the solar
panels exceeds the allocation grid inverter, it is necessary to increase the cost of a grid
inverter.
3. Combination of SGPV does not interact - The traditional solar grid tie system, they offer
units ranging in high power output and these units are modular so you can have multiple units
operating in parallel for large solar arrays. Although, the traditional grid inverter has MPPT
feature (Maximum Power Point Tracking), but the maximum power point is according to the
entire series in terms of solar panels array, if the performance of a piece of solar panels in the
system, for some reason, such as leaves, bird droppings, dust, shadow, etc. and degrades,
the performance of the entire solar power system will decrease.
SGPV has no such disadvantage. If the performance of a piece of solar panels in the system
degrades, this just effects this piece itself, will not affect other SGPV in the system.
4. Improving the efficiency of the entire solar power system – In traditional grid tie system, the
solar panels are connected in series, so the MPPT of the inverter is according to the total
panels in series, not to every panel, but there is difference between every panel, so not every
panel is working at the maximum power, this will reduce the total power of these panel in
series.
But SGPV has no such disadvantage. Because every inverter of SGPV has MPPT function, so
every panel is working at the maximum power, this will increase the efficiency of the entire
system.
5. Low power consumption – Most of the parts in the small grid-tie inverter are digital ICs and
low power MCU, so the power consumption of it is low, though the quantity of grid tie inverters
is increased, but this will not increase the power consumption much of the entire system.
