Single-phase grid-connected energy storage system

What is a two-channel single-phase string inverter?

This reference design is intended to show an implementation of a two-channel single-phase string inverter with fully bidirectional power flow to combine PV input functionality with BESS supporting a wide range of battery voltages. This system consists of two boards that are split by different functionality.

What is the output power of 230vrms grid?

With the signle-phase 230VRMS grid, an output power of 4.6kW can be achieved with an output current of 20ARMS. The EMI filter is composed of a boost inductor split between both rails for better common-mode rejection capability, two common-mode chokes, Cx capacitors, and Cy capacitors.

What is lmg3522r030 power supply isolation?

The power supply isolation is based on the UCC14131 which is a high isolation DC/DC power module and provides an isolated 12V supply for the GaN FET from the 12V power supply on the board. LMG3522R030 also has built-in junction temperature reporting. This temperature signal is isolated by using the same digital isolator.