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Energy storage function: The photovoltaic power generation time and the load power consumption time are not necessarily synchronized. The photovoltaic off-grid system can generate electricity only when there is sunlight. The power generation reaches the highest at noon, but the electricity demand is not high at noon. Many household off-grid power stations are in Electricity only at night. Therefore, the electricity generated during the day needs to be stored by the battery first, and then the electricity is released when the electricity peaks.

The on grid inverter sends energy directly to the grid, so it needs to track the frequency and phase of the grid, which is equivalent to a current source. Of course, some inverters have low voltage ride-through capability and can be used for PQ adjustment.

The off grid inverter refers to the inverter capable of V / F control. Its outermost loop is the voltage loop, which can stabilize the voltage and frequency of the AC bus.

The solar charge controller is mainly used to protect the battery from solar energy. It's some kind of overload protection. It protects the battery from external discharges and is a kind of low-level cargo hold.

The total energy stored in the lithium battery is inversely proportional to its safety.With the increase in the battery capacity, the battery volume increases, the heat dissipation deteriorates, and the probability of an accident increases significantly.

Recently, Shenzhen Sumry Electronics Co., Ltd. (hereinafter referred to as: Sumry) signed an "exclusive agency" agreement with FSPS, and FSPS became the exclusive agent of Sumry in Lebanon.