Composition of solar photovoltaic power generation system

Solar photovoltaic power generation system is composed of solar cell array, controller, battery pack, inverter and other parts

1. Solar cell phalanx: Solar cell phalanx is the core part of the solar power generation system, and it is also the most important part of the solar power generation system. Its function is to convert the solar energy into electrical energy, and store it in the storage battery, or push the load to work.

2. Controller: one of the core components of the photovoltaic power generation system, which generally has the following functions:

1. Signal detection detection light

The status and parameters of each device and each unit of the voltaic power generation system, the physical quantities detected include input voltage, charging current, output voltage, output current, and battery temperature rise.

2. Optimal charging time control

Determine the best charging method according to the current solar resource conditions and battery status to achieve efficient and fast charging.

3. Battery discharge management

Manage the discharge process of the battery, such as load control to automatically switch on and off, realize soft start, and prevent error protection caused by voltage drop at the battery terminal when the load is connected.

4. Equipment protection

Overvoltage caused by inverter failure in the control system and overcurrent caused by load short circuit.

5. Running status indication

Indicate the operating status and fault information of the photovoltaic system through indicator lights, displays, etc.

3. Battery pack: The function of the battery is to store the electric energy emitted by the solar cell array when it is illuminated and discharge it to the load at any time. The basic requirements for it are: low automatic discharge rate, long service life, strong discharge capacity, high charging efficiency, less maintenance or maintenance-free, wide operating temperature range, and low price.

4. Inverter: An inverter is a device that converts direct current generated by photovoltaic power generation into alternating current. Photovoltaic inverters play an important role in maintaining balance in photovoltaic systems and can be used with general AC power supply equipment.