Product Description

1.‘SGPV’ (Small Grid Tie Photovoltaic System)
2. The only plug and play small grid tie photovoltaic system
3. The stackable small grid tie photovoltaic system
4. Out Door Installation Design, IP*5 Waterproof

INTRODUCTION
The small type solar grid tie power inverter can obtain the solar energy from solar panel, and can connect to the grid through its output cable with no extra equipment. The installation is very convenient and reliable.We call the system combining with small solar grid tie power inverter and solar panels as ‘SGPV’. The system includes solar panels and small type grid tie power inverter. Solar panels can be mono silicon, polygon silicon, non-crystal film or any other material that can transform solar energy to electric energy. The power of grid tie inverter should be matched to the power of solar panels connected. So the power of SGPV is defined by its solar panels, it can be standardized according to the actual using.

The AC output of the inverter can be connected to home grid directly, when the home grid is run by the conventional electric network. The small grid tie inverter monitors the volume, frequency and phase of the home grid, then produce a
pure sine wave that the frequency and phase are as same as the grid's, and the volume is a bit higher than the grid's, then using the current controlled PWM method to control the output power to the grid. The small grid tie inverter just puts out power when the home grid is on.

When the sun shines, the PV panel will produces DC voltage, and the grid tie inverter will change the DC voltage to AC voltage and output power to the home grid. When the total power of electric apparatus that are using in the house is larger than the output power of the inverters, these power from the inverters will be consumed in the house, which will slow down the power meter, otherwise, the difference of the output power of the inverter between the total used power of the
apparatus will go out from the house to the out grid.

ADVANTAGE
There are many advantages of SGPV, compared with the traditional grid tie system.
1. Easy installation and low cost- SGPV can make full use of all types of buildings’ surface that face to the sun in the city and can be installed on that building surface. Besides, the maintenance cost is very low.

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 a grid inverter which is much more expensive.

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., 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. Improve 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 of the entire system.


Electrical Specifications: