Principle of 10kw off-grid lithium battery energy storage inverter

How much power does a DC-link inverter have?

In boost mode, since this converter supplies the inverter through the DC-link, the discharge power is limited to 4.6kW, the limitation being the maximum power rating of the inverter stage. Depending on the battery voltage, this value can go up to 30A.

What is the DC current of a photovoltaic inverter?

DC current: 14A With an increase in demand for photovoltaic systems, inverters play an important role in facilitating the transition to renewable energy further and making solar energy more accessible for residential purposes.

How to limit reactive power injected into the grid?

By default, the reactive power injected into the grid is equal to Equation 17. At = Vg2 × 2πfg 10% load, a power factor equal to 0.9 (26°) has been set up as requirement. Thus, leading to limit the quantity of Q reactive power, given by × ∅ Equation 18.

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 a hybrid string inverter?

With the additional possibility of energy storage via batteries, hybrid string inverters provide a good outlet to maximize the power utilization of the string input, and also provide an alternate pathway to supply the grid during night or low irradiation scenarios.

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.