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Solar system with battery backup is mainly composed of four parts, including Battery System (BS), Power Conversion System (PCS), Battery Management System (BMS), and Monitoring System; at the same time, in practical application, for the convenience of design, management and Meanwhile, in practical applications, the BS, PCS and BMS are usually recombined into modular BESS for easy design, management and control, while the monitoring system is mainly used to monitor, manage and control one or more modular BESS.
- The battery system is the main carrier of BESS to store and release electrical energy, and its capacity and operation status are directly related to the energy conversion capacity and safety reliability of BESS.
- The PCS is a device consisting of power electronic conversion devices that connects the battery system to the AC grid and is a key component of the energy exchange between the BESS and the outside world.
- BMS is a real-time monitoring system composed of electronic circuit equipment, which can effectively monitor various states of the battery system (voltage, current, temperature, charge state, health state, etc.), safely manage the charging and discharging process of the battery system (such as preventing overcharging and over-discharging management), alarm and emergency protection treatment of possible battery system faults, and optimize the control of battery system operation, and ensure safe, reliable and stable operation of the battery system
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