Technical FAQs 4

How does DC coupling work?

The working principle of DC coupling: When the PV system is running, the battery is charged by the MPPT controller. When there is demand for the electrical load, the storage battery will release the power, and the current is determined by the load. The energy storage system is connected to the power grid.

What is DC vs AC coupling?

In circuits, whether direct current (DC) or alternating current (AC), coupling involves the transfer of energy to ensure the smooth operation of the system; the optimal choice, between DC vs AC coupling can have a very important impact on the performance of a power system.

Which AC coupling system should be used in a PV system?

The AC coupling system, grid-tie inverter, battery and bidirectional inverter are parallel, with no tight connection but better flexibility. If it is necessary to install an energy storage system in an installed PV system, it is better to use the AC coupling.

What is the working principle of AC coupling?

The gathering point of energy is at the communication end. The working principle of AC coupling: Include the PV power supply system and storage battery power supply system. The PV system is constituted by a PV array and a grid-tie inverter. The battery system consists of a storage battery and a bidirectional inverter.

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DC coupling of the inverter

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