The Powermate P3.68/P4.6/P5/P6 hybrid inverters are high-quality inverter which can convert solar energy to AC energy and store energy into battery. The inverter can be used to optimize self-consumption, store in the battery for future use or feed into public grid. Work mode depends on PV energy and user's preference. It can provide power for emergency use during the grid lost by using the energy from battery and inverter (generated from PV).

With the continuous increase of fossil energy consumption and the deterioration of ecological environment, various countries are actively looking for a new energy source sustainable and non-polluting to the ecological environment. Among them, solar energy, as an efficient and pollution-free new energy source, has become an important part of today's energy structure.In recent years, the energy storage industry has experienced fast development, the installed capacity of energy storage has also increased continuously, and the market demand is huge. Under this background, CYG SUNRI focuses on the development and production of new energy household energy storage systems, and is committed to providing world-class household storage system solutions, including hybrid inverter, battery management system (BMS) and energy storage system (EMS).

The PRS-3000 energy storage monitoring and energy management system is a cross-platform integrated energy management system introduced by CYG SUNRI, which can realize real-time monitoring, diagnosis and early warning, panoramic analysis, and advanced control functions. This system can satisfy the requirement of comprehensive monitoring of power grid operation, intelligent security analysis, adjustment and control in advance, and dynamic panorama analysis, and ensure the safe, reliable and stable operation of power grid.The PRS-3000 energy storage monitoring and energy management system adopts service-oriented software architecture, follows the IEC 61970/IEC 61968 standard, and has good openness, which can well meet the continuous development requirement of system integration and applications. By employing the middleware technology, the system can effectively prevent differences between heterogeneous systems, and meet the cross-platform requirement, which supports operating systems like Unix/Linux/Windows. Advanced and mature hardware equipment is used, and key equipment adopts redundant configuration, so as to build a safe, reliable, standard and open main station system with resource sharing and easy integration. The system is fully compatible with domestic hardware devices, operating systems and databases.

The PRS-7563 power conversion system(PCS) and its optional accessories are the link between the power grid and electric energy storage equipment, which can realize conversion between AC power and DC power, and monitor data such as voltage, current, power, and power temperature at the AC end and DC end of energy storage converter. It plays the role of charging and electric energy feedback, it is key equipment in the energy storage system, and it provides preconditions for the vigorous development of distributed power generation systems. In the meantime, as a controllable energy storage power source in the micro-grid, PCS solves the contradiction between the large power grid and the distributed power supply, so that the micro-grid can not only be connected to the large power grid, but also can operate independently by disconnecting from the main grid when the power grid fails or when there is requirement for disconnection, which can greatly improve the safety, stability and economic efficiency of the power system.

The PRS-3201B energy storage coordinating controller can independently collect voltage, current and frequency, and perform AGC/AVC control, dynamic reactive power regulation, primary frequency modulation, source-network load-storage interaction and other control functions. Based on the GOOSE protocol, it can perform millisecond-level control to as many as 128 PCS.

The PRS-3201 microgrid central controller is usedin the coordinated control and protection of micro-grid. In grid-connected and island states,stable and economical operation of the power grid can be maintained via effective and coordinated control of various distributed power sources (DG) including energy storage equipment and diverse loads. Effective access and utilization of various distributed power sources can also be realized. PRS-3201 can be used in the AC micro-grids, DC micro-grids and AC/DC hybrid micro-grids with various voltage levels in the range of 0.4~35kV,which has the advantages of fast adjustment speed, high precision, and good follow-up performance, and it can achieve second-level follow-up delay. In addition to satisfying planned charging/discharging and AGC adjustment, the system supports active balanced management of battery pack SOC to ensure the charging and discharging capacity of power station. It also supports functions such as diagnostic warning and panoramic analysis, which can effectively ensure the life and safety of high-value assets in the energy storage system.

The battery management system (BMS) is the most important control link in the energy storage system. On the one hand, the BMS system protects, monitors, measures, and maintains the battery cells; on the other hand, the BMS system performs data transmission, command reception, log storage, and power interactive control. These functions are the bridge and interface of interaction between micro-grid, monitoring & PCS and the battery. Therefore, the BMS system is the most critical link between the entire energy storage control system and the battery. The PRS-7550 battery management system of CYG SUNRI is mainly used in large-scale energy storage containers and indoor energy storage projects, and it generally forms a complete energy storage system with PCS and EMS. Due to its various functions such as protection, measurement, monitoring, and communication, it is the most important cornerstone in the energy storage control system and bears important responsibilities such as battery maintenance and safe use.

The PRS-7564 intelligent grid-connected and off-grid switching cabinet is designed for energy storage systems, which can be used with PCS, energy storage coordinating controller, distributed power source and load, and automatic and seamless switch between grid-connected and off-grid modes can be realized.

The PRS-7921 Energy storage local control terminal is an Ethernet-based intelligent logic unit introduced by CYG SUNRI using mature computer technology and network communication technology by summarizing years of experience in the development and operation of substation integrated automation systems. The purpose of this terminal is to satisfy the requirement of online monitoring of energy storage stations and the development of higher-level system monitoring.As a communication device of comprehensive automation system deployed in the substation, PRS-7921 follows the DL/T860 protocol, which is connected the BMS, PCS and the higher-level monitoring system in the station, and coordinates the data and command interaction between various devices and monitoring terminals. Specifically, it receives data sent by the online monitoring device in real time, aggregates, displays, processes, analyzes and stores the data, and realizes the control of energy storage device and standard communication with the higher-level system.