Description
Home power backup
The SmartGuard can implement on/off-grid switching and load management. Its main function is to switch the inverter between on-grid and off-grid modes. When the grid is available, the inverter works in on-grid mode, and the grid and inverter ensure power supply to both backup loads and nonbackup loads. When the grid fails, the inverter quickly switches to off-grid mode and supplies power to only backup loads. If the power plant is equipped with a generator, when the SOC of the energy storage system (ESS) is lower than ESS SOC Threshold for Starting Up Generator, the generator starts and supplies power to backup loads and non-backup loads. At the same time, the surplus power generated by the generator can be used to charge the ESS.
When the SOC of the ESS reaches ESS SOC threshold for shutting down generator, the generator shuts down and the ESS supplies power to only backup loads. After the grid recovers, the inverter automatically switches to grid-tied mode.
The seamless switching function of the SmartGuard needs to be manually enabled. If the function is enabled, the system where an MAP0 inverter is installed will switch to off-grid mode within 20 ms after the grid fails or becomes abnormal, ensuring uninterruptible power supply to IT equipment such as computers connected to the backup load port.
The SmartGuard has a built-in EMMA, which can connect to PV, ESSs, smart chargers, and smart loads. In addition to unified scheduling of home energy, the EMMA can connect to smart loads such as chargers, SG Ready heat pumps, and smart switches. Users can set the reservation time to charge vehicles and heat water in advance at the specified time. In addition, users can set PV energy usage priorities for devices as required to make the best use of PV energy.