PV Powered Grid-Tied Manuel d'utilisateur télécharger pdf (Page 3)

Application Note

Adding energy storage through AC-coupling: For the owners of these more common grid-tied, grid-dependent

inverters, there is a way to tie in a battery-backup inverter system using a method called AC Coupling. It typically

requires adding a load center with circuit breakers and electrical connections for the building’s critical loads. This

allows a point at which the grid-tied (GT) inverter and the battery-based (BB) inverter to “couple” and share their

energy to the loads. In a normal mode of operation with grid power available, the energy from the PV array flows

through the GT inverter to the critical load panel, with any excess energy flowing through the load panel to the BB

inverter, and on out to the grid (see Figure 3).

Figure 2 - Typical Grid/Hybrid System

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PV Powered Grid-Tied Manuel d'utilisateur Page 3