A solar control system consists of solar panels, batteries, a controller, and a load.
The solar controller is a device used to control the charging of the batteries by the photovoltaic panels and to provide load control voltage for voltage-sensitive equipment. It regulates and controls the charging and discharging conditions of the batteries and controls the power output of the solar panels and batteries to the load according to the power demand of the load. It is the core control part of the entire photovoltaic power supply system. It is specifically designed for power supply systems for communication or monitoring equipment in remote areas. The controller's charging control and load control voltage are fully adjustable, and it can display battery voltage, load voltage, solar array voltage, charging current, and load current.
Almost all solar power generation systems powered by batteries require a solar charge/discharge controller. The function of the solar charge/discharge controller is to regulate the power delivered from the solar panels to the batteries. Overcharging the battery significantly reduces battery life, and in the worst case, damages the battery until it becomes unusable.
The solar controller uses a high-speed CPU microprocessor and a high-precision A/D converter, making it a microcomputer data acquisition and monitoring control system. It can quickly and in real-time collect the current operating status of the photovoltaic system, obtain the operating information of the PV station at any time, and accumulate detailed historical data of the PV station, providing accurate and sufficient basis for evaluating the rationality of the PV system design and verifying the reliability of system components. In addition, the solar controller also has serial communication data transmission capabilities, enabling centralized management and remote control of multiple PV system substations.
Solar controllers typically have six nominal voltage levels: 12V, 24V, 48V, 110V, 220V, and 600V.
Currently, controllers are developing towards multi-functionality, with a trend towards integrating traditional control components, inverters, and monitoring systems.
