BougeRV CIGS, User Manual

Frequently Asked Questions

8

What causes the low output power or no 

output during the use of solar panels? 

How can I solve it?

1. Light intensity: 

Latitude, altitude, and sun altitude angle will affect 

the light intensity; multiple measurement results show that high 
temperature does not equal strong light intensity.

2. Solar installation angle: 

In the same geographical location, due to 

the different installation inclination angles, the cumulative amount of 
sunlight absorbed and the cumulative difference in radiation amount 
causes the difference in power generation. It works best when the solar 
panel is roughly perpendicular to the light.

3. Solar panel surface temperature: 

When the solar panel surface 

temperature is 77

℉

, the output power is ideal. When the temperature is 

higher than 77 degrees Fahrenheit, the output power will decrease.

4. Shadow occlusion: 

During the working process of the solar panel, 

due to the partial occlusion of the shadow and the different degrees of 
dust settlement, the pollution of bird droppings will cause the "hot spot 
effect", and the shaded part of the solar panel will not provide power 
contribution and will not be used in the solar panel. The interior 
becomes an energy-consuming load, and at the same time causes the 
local temperature of the solar panel to increase. The overheated area 
can cause the EVA to accelerate aging and turn yellow, which reduces 
the light transmittance of the area, further deteriorates the hot spot, 
and leads to aggravated failure of the solar panel. Therefore, when using 
it, you should avoid blocking things and clean the surface of the solar 
panel regularly.

5. Load factors: 

When charging the energy storage, it will be limited by 

the maximum PV input current and voltage of the energy storage. 
Therefore, the input power value displayed on the energy storage 
display does not represent the maximum output of the solar panel. 
Please confirm the PV input related parameters of the energy storage 
before use; 
Due to the own characteristics of PWM, there is a certain switching loss 
in the process of connecting with the solar panel, so the input power 
obtained by the battery will be lower than the maximum output of the 
solar panel.

Q1

A1