Factors Affecting The Performance Of Solar Panels
The photovoltaic power generation system is not only energy-saving and environmentally friendly, but can also be combined with city power when the system power is insufficient. Solar photovoltaic module parts Photovoltaic cells have a limited power generation capacity per piece, and must be connected in series and packaged into modules before they can be used as a power source. The editor will briefly talk to you about the effects that affect photovoltaic modules:
1. Hot spot effect
The shaded solar cell module in a series branch will be used as a load to consume the energy generated by other solar cell modules with sunlight. The shaded solar cell module will generate heat at this time, which is the hot spot effect.
This effect can severely damage solar cells. Some of the energy produced by a solar cell that is illuminated may be consumed by a shaded cell. The hot spot effect may be caused by just a piece of bird droppings.
In order to prevent solar cells from being damaged due to the hot spot effect, a bypass diode is connected in parallel between the positive and negative electrodes of the solar cell module to prevent the energy generated by the lighting module from being consumed by the shaded module. When the hot spot effect is severe, the bypass diode may be broken down, causing the component to burn out.
2. PID effect
Potential-induced attenuation effect is when battery components are exposed to high voltage for a long time, causing leakage current between the glass and packaging materials. A large amount of charge is sniped on the surface of the battery sheet, worsening the passivation effect on the battery surface, causing the component performance to be lower than the design standard. When the PID phenomenon is serious, it will cause the power of one component to attenuate by more than 50%, thus affecting the power output of the entire string. Coastal areas with high temperature, high humidity, and high salinity are most prone to PID phenomena.
The above is the editor's summary of the "effects affecting photovoltaic modules". I hope these contents can bring you some answers and help. If you have any questions related to photovoltaic modules, you can also directly contact our online customer service~
