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There are many functions of the PV controller, which varies according to the different application fields. For example, when it is used in a large photovoltaic system, it has the power of balancing the system and maintaining the function of the system running and protecting the battery. However, when the small photovoltaic system is used, the only function of the battery is to protect the battery. A lot of friends are not very clear about the working principle of the PV controller. Today, the first good XinDa will give you a detailed introduction.

1, parallel type of photovoltaic controller. The switch device is connected in parallel to the output of the battery square. If the voltage is less than the voltage in the battery, the switch device will be connected, which makes the output circuit of the battery square short-circuit directly, causing the discharge and no longer charging the battery so as to protect the battery from happening. The service life is influenced by the phenomenon of the degree of charge. Only when the voltage of the battery is less than the output voltage of the battery square, the diode can be switched on. This can avoid the reverse charge of the diode. At the same time, the battery does not recharge the battery matrix reverse in the condition of bad weather, thus it can play a certain protection function. If the fuse is not burned carefully, the photovoltaic controller will also play the role of reverse connection protection.

2, series type of photovoltaic controller. Most of this type of controller and parallel controller are similar. For example, the difference between the circuit structure and the circuit structure is that the connection method of the switch device is different. The series switch device is connected in the circuit, and the parallel switch device is connected to the output end of the battery square. It has also been introduced. When the cut off voltage is less than the voltage of the battery, the switch device is cut off so that the solar cell is no longer charged to the battery, so that it plays a protective role.

The working principle of the photovoltaic controller is not difficult to understand. It has two different connection methods: series and parallel connection. The function of the photovoltaic controller is very powerful. Besides the above functions, it is also very convenient to use and is well received by users. In addition, friends who need MPPT controller can consult the XinDa.