Performance parameters of solar panels in solar street light systems

The solar panel is an important part of the solar street lamp lighting system. Its function is to use the photovoltaic effect to convert the absorbed light energy into electrical energy, which is used to power the LED light source. In the entire solar street light system, the solar panel is the primary component for the normal operation of the entire system, so the performance parameters of the solar panel are particularly important. 1. Test conditions of solar cell modules 1. Since the output power of solar modules depends on factors such as solar irradiance and solar cell temperature, the measurement of solar cell modules is carried out under standard conditions (STC), which is defined as: atmosphere The quality is AM1.5, the light intensity is 1000W/m2, and the temperature is 25°C. Under this condition, the maximum power output by the solar cell module is called the peak power. In many cases, the peak power of the module is usually measured with a solar simulator. 2. The main factors affecting the output performance of solar cell modules are as follows: 1) Load impedance 2) Intensity of sunlight 3) Temperature 4) Shadow 2. Performance parameters of solar panels Peak power Pm: Peak power is also called maximum output power Or the best output power. Peak power refers to the maximum power of a solar cell module under normal working or test conditions. Peak voltage Um: The peak voltage is also called the maximum working voltage or the best working voltage. The peak voltage refers to the voltage when the solar cells output the maximum power. Peak current Im: The peak current is also called the maximum working current or the best working current. The peak current refers to the working current when the solar cell module outputs the maximum power. Open circuit voltage Voc: The voltage when the battery is not connected to the circuit can also be considered as electromotive force. Short-circuit current Isc: refers to the current when the appliance is not connected, which is equivalent to the current when the positive and negative phases of the battery are directly connected by a wire. Fill factor FF: Fill factor is an important parameter to evaluate the output characteristics of solar cell modules. The higher its value, the higher the conversion efficiency of the component.