First, the series connection method of multiple solar panels
When multiple solar panels are connected in series, the positive and negative poles of each solar panel are connected separately to make the current in series between each solar panel. After multiple solar panels are connected in series, the total output voltage is the sum of the individual output voltages of each solar panel, and the output current is equal to the current with the smallest output current of each solar panel. When connected in series, the output voltage of each solar panel must be the same, otherwise there will be a power mismatch.
The advantage of the series connection method is that the output voltage is high, which is suitable for long-distance transmission of electrical energy. However, when connected in series, the output current of each solar panel is the same, and the failure of one solar panel will affect the work efficiency of the entire system.
Second, the parallel connection method of multiple solar panels
When multiple solar panels are connected in parallel, the positive electrode of each solar panel is connected to the positive electrode, and the negative electrode is connected to the negative electrode, so that the current is connected in parallel between the solar panels. After multiple solar panels are connected in parallel, the total output current is the sum of the currents of each solar panel, and the output voltage is equal to the voltage of the smallest output voltage of each solar panel. When connected in parallel, it is necessary to ensure that the output current of each solar panel is the same, otherwise the problem of power mismatch will occur.
The advantage of the parallel connection method is that the output current is large, which is suitable for high-power load equipment. However, when connected in parallel, the output voltage of each solar panel is the same, and the failure of one solar panel will not affect the work efficiency of the entire system.
Third, multiple solar panel connection precautions
1. The positive and negative wiring of the solar panel must be correct, otherwise the solar panel will be damaged.
2. Pay attention to the quality of the connection when wiring, the cross-sectional area of the wire should be appropriate, and the connection point should be firm.
3. Solar panel wiring should prevent short circuit between anode and cathode to avoid circuit overload
4. When installing multiple solar panels, you should try to avoid shadow occlusion and maintain the heat dissipation of the solar panels.
5. When connecting multiple solar panels, pay attention to the rated voltage and rated current of the inverter to avoid damage to the inverter.
Four. Summary
Multiple solar panels connected in series or parallel should be selected according to actual needs. Series connection is more suitable for long-distance transmission of electric energy and low-power load equipment, while parallel connection is suitable for high-power load equipment. When connecting multiple solar panels, pay attention to the correctness of the wiring, the firmness of the connection point and the prevention of short circuit, etc., to ensure the long-term stable operation of the system.