1. In winter, the weather is dry and there is a lot of dust. The dust accumulated on the components should be cleaned up in time to prevent the reduction of power generation efficiency. In severe cases, it may even cause hot spot effects and shorten the life of components.
2. In snowy weather, the snow accumulated on the modules should be cleaned up in time to prevent them from being blocked. And when the snow is melted, the snow water flows to the wiring, which is easy to cause a short circuit.
3. The voltage of photovoltaic modules changes with temperature, and the coefficient of this change is called the voltage temperature coefficient. When the temperature drops by 1 degree Celsius in winter, the voltage increases by 0.35% of the reference voltage. One of the standard working conditions for modules is that the temperature is 25°, and the voltage of the corresponding module string will change when the voltage changes. Therefore, in the design of the photovoltaic off-grid system, the voltage variation range must be calculated according to the local minimum temperature, and the maximum string open circuit The power station cannot exceed the maximum voltage limit of the photovoltaic controller (integrated inverter).
TORCHN provides you with a complete set of solar solutions and controls the quality of every component.
Post time: Nov-15-2023