Solar photovoltaic power generation_Solar street light_Solar power generation system

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Introduction to solar power system
The solar power system ( power station ) consists of a solar battery pack, a battery pack, an inverter, and a solar charge controller. It can directly supply 12V , 24V or 48V DC, and can also provide 220V and 380V AC power.

Solar panel
     The function of the solar panel is to convert solar radiant energy directly into direct current for use by the load or stored in the battery for later use. Generally, according to the needs of users, a number of solar panels are connected in a certain manner to form a square array of solar cells, and then matched with appropriate brackets and junction boxes.
 

2. Charge controller
The charge controller is mainly composed of a dedicated processor CPU , electronic components, a display, a switching power tube, and the like. In the solar power generation system, the basic function of the charge controller is to provide the best charging current and voltage for the battery, to charge the battery quickly, smoothly and efficiently, and to reduce the loss during the charging process and to maximize the service life of the battery; Protect the battery from overcharging and overdischarging. At the same time, it records and displays various important data of the system, such as charging current and voltage.

3. Inverter
The function of the inverter is to invert the low-voltage DC power provided by the solar cell array and the battery into 220V or 380V AC, and supply it to the AC load.

4. Battery pack
DC battery pack is emitted square solar stored up for the load. In a photovoltaic power generation system , the battery is in a floating charge and discharge state. During the day, the solar cell array charges the battery , and the square array also supplies power to the load . At night, the load power is all supplied by the battery. Therefore , the self-discharge of the battery is required to be small , and the charging efficiency is high , and factors such as the price and ease of use are also considered.

Second, the remarkable features of solar power systems
1. The reliability of power supply is close to 100% , which can fully adapt to various meteorological conditions;
2 , automatic operation of equipment operation, can achieve unattended and remote monitoring;
3 , management and maintenance is simple and convenient, operating costs are extremely low;
4 , the main components have a service life of more than 20 years.
5 , one investment, long-term benefits;

Third, the design principles
The design of the solar power system requires the user to cooperate with the professional solar technology company. First, the user must provide exact usage requirements, including:
1. The voltage and power required to be solved;
2 , daily working hours, continuous rainy days to guarantee time;
3. Whether there is a backup mains power supply;
4. System use area and climate data;
5. If the equipment is powered, it is best to provide the name, specification or technical parameters of the equipment.
After receiving the user's usage requirements, the company will initially configure and estimate the system, and communicate with the user more accurately at any time during the design process to propose rationalization proposals.
Due to the high cost of one-time input from solar power supply, the design should be based on economical and practical principles, and the investment should be reduced as much as possible. At the same time, some key components should be selected as high-quality products as possible to extend the working life of the whole system and improve system reliability. failure rate.

This article is provided by solar heating projects, solar photovoltaic power plant, Shanghai magnesium double lotus solar plant