What is the working mode of off-grid solar battery system?
The off-grid solar battery system uses solar panels to convert solar energy into electric energy in sunlight. It supplies power to the load through the solar charger controller while charging the battery. In overcast weather or without sunlight, the energy storage battery power to the DC loads through the solar charging and discharging controller. The storm also supplies power directly to the independent inverter, which inverts the current to supply power to the AC load.
The inverter has three operating modes
In the off-grid solar battery system with mains power complementation, the inverter has three working modes: grid power, battery priority, and photovoltaic priority. The application scenarios and requirements of photovoltaic off-grid users vary greatly, so different methods should be set according to the actual needs of users to maximize photovoltaically and meet customer requirements as much as possible.
Working mode1: PV priority mode
Working principle: PV gives priority to supplying power to the load. When the PV power is less than the load power, the energy storage battery and PV supply power to the bag. When there is no PV, or the battery is low in control, if there is mains power detected, the inverter will automatically switch to the mains power supply.
Applicable scenario: It is used in areas without electricity or with electricity shortages. The price of municipal electricity is not very high. In places with frequent power outages, it should be noted that if there is no photovoltaic. But the battery is still sufficient, and the inverter will switch to municipal electricity with the load. The disadvantage is that it will cause a particular waste of electricity. The advantage is that if the municipal electricity is cut off, the battery has power and can continue to carry the load. Users with high electricity demand can choose this mode.
Working mode2:Grid power priority mode
Working principle: no matter whether it is photovoltaic or not and whether the battery has electricity. The leading power powers the load as long as the grid power is detected. Only after the mains power outage is seen are the solar panel and energy storage battery. Power the load
Applicable scenario: It is applied to places with stable mains voltage and low price but short power supply time. Solar energy storage is equivalent to a backup UPS power supply. The advantages of this mode are that photovoltaic modules can be configured relatively less, and the initial investment is low. The disadvantages are that photovoltaic energy is wasted dramatically, and many hours may not be used.
Working mode3:Battery priority mode
Working principle: Solar panel gives priority to supplying power to the load. When the PV power is less than the load power, the energy storage battery and PV supply power to the bag together. When there is no PV, the battery power supplies power to the bag separately. And when the battery is fully charged, if the short circuit inverter detects mains power. If it sees the main power (if it thinks it has it), it will automatically switch to the main power supply.
Applicable scenario: It is used in areas without electricity or with electricity shortages. The electricity price of the city power is high, and there is frequent power failure. It should be noted that the inverter will switch to the city power with load only when the battery power needs to be low. The advantage is that the PV utilization rate is very high, while the disadvantage is thauser’suser’s power consumption cannot be fully guaranteed. When the battery runs out of power, but the city power happens to be cut off, no control is available. This mode can be selected for users who do not require high power consumption.
The above three operating modes can be selected under both photovoltaic and commercial power conditions conditions conditions conditions conditions conditions. The first mode and the third mode need to detect and use the battery voltage to switch. This voltage is related to the type and number of batteries installed. If there is no mains power complementation, the inverter has only one operating mode::tery: battery: battery: battery: batterytery priority mode.
Finally, let’s summarize.
According to the above introduction, everyone can choose the working mode of the inverter according to the most suitable situation! You can contact us for more professional guidance if you want to know more! Also can refer to the projects on our website for more details. www.pcenertech.com