AC/DC coupled Inverter FAQs

A: AC coupling, or AC coupled, primarily refers to a storage system being charged from AC power. Typically used in retrofitting scenarios alongside existing PV systems, AC coupling allows for load compensation and battery charging when grid power is available. During grid outages, the storage system provides a voltage reference for the PV system to continue generating power without grid support.

A: es, both on-grid and off-grid modes are available with a 12kW inverter. The existing PV inverter needs to be connected to the Gen port to enable AC coupling functionality.

A: The ACS3600 cannot achieve true zero export due to certain limitations:

  • If the PV inverter lacks zero export functionality, setting zero export won’t work, resulting in excess energy feedback to the grid.
  • If the PV inverter has zero export capability, it generates energy based on the load. When the current from the inverter is detected by a current transformer (CT), PV energy generation stops, preventing battery charging during this time.

A: The ACS 3600, our AC-coupled device, integrates bidirectional power conversion, an energy storage battery, and a battery management unit. It efficiently stores energy from solar, grid, or generator sources to power household loads as needed. This system optimizes solar energy utilization, reduces electricity expenses, and ensures reliable home electricity. During grid outages, the generator seamlessly serves as a backup power source.

A: In an AC-coupled system, solar panels produce DC power, which is converted to AC by an inverter to power appliances. Any electricity directed to a battery undergoes conversion to DC by an inverter before being converted back to AC for appliance use or grid feeding.

In a DC-coupled system, DC power from solar panels directly charges solar batteries without intermediate AC conversion. Any electricity required for appliances or grid feeding is converted to AC by an inverter, as is any electricity discharged from the battery.

A: In the context of a DC-coupled inverter, our device interfaces with existing grid-tied inverters. With a maximum 200 kW PV input and 100 kW PV output capacity, and compatibility with 100-700V high voltage batteries, it is suitable for large-scale commercial and industrial applications.