Photovoltaic inverter (PV inverter or solar inverter) can convert the variable DC voltage generated by photovoltaic (PV) solar panels into an inverter with alternating current (AC) frequency of mains frequency, which can be fed back to the commercial power transmission system, or supplied to the grid usage of the grid. Photovoltaic inverter is one of the important balance of system (BOS) in photovoltaic array system, which can be used with general AC power supply equipment. Solar inverters have special functions for photovoltaic arrays, such as maximum power point tracking and islanding protection.
Solar inverters can be divided into the following three categories:
1. Stand-alone inverters: used in independent systems, the photovoltaic array charges the battery, and the inverter uses the DC voltage of the battery as the energy source. Many stand-alone inverters also incorporate battery chargers that can charge the battery from AC power. Generally, such inverters do not touch the grid and therefore do not require islanding protection.
2. Grid-tie inverters: The output voltage of the inverter can be returned to the commercial AC power supply, so the output sine wave needs to be the same as the phase, frequency and voltage of the power supply. The grid-connected inverter has a safety design, and if it is not connected to the power supply, the output will be automatically turned off. If the grid power fails, the grid-connected inverter does not have the function of backing up the power supply.
3. Battery backup inverters (Battery backup inverters) are special inverters that use batteries as their power source and cooperate with the battery charger to charge the batteries. If there is too much power, it will recharge to the AC power source. end. This kind of inverter can provide AC power to the specified load when the grid power fails, so it needs to have the islanding effect protection function.
Photovoltaic inverter (PV inverter or solar inverter) can convert the variable DC voltage generated by photovoltaic (PV) solar panels into an inverter with alternating current (AC) frequency of mains frequency, which can be fed back to the commercial power transmission system, or supplied to the grid usage of the grid. Photovoltaic inverter is one of the important balance of system (BOS) in photovoltaic array system, which can be used with general AC power supply equipment. Solar inverters have special functions for photovoltaic arrays, such as maximum power point tracking and islanding protection.
Solar inverters can be divided into the following three categories:
1. Stand-alone inverters: used in independent systems, the photovoltaic array charges the battery, and the inverter uses the DC voltage of the battery as the energy source. Many stand-alone inverters also incorporate battery chargers that can charge the battery from AC power. Generally, such inverters do not touch the grid and therefore do not require islanding protection.
2. Grid-tie inverters: The output voltage of the inverter can be returned to the commercial AC power supply, so the output sine wave needs to be the same as the phase, frequency and voltage of the power supply. The grid-connected inverter has a safety design, and if it is not connected to the power supply, the output will be automatically turned off. If the grid power fails, the grid-connected inverter does not have the function of backing up the power supply.
3. Battery backup inverters (Battery backup inverters) are special inverters that use batteries as their power source and cooperate with the battery charger to charge the batteries. If there is too much power, it will recharge to the AC power source. end. This kind of inverter can provide AC power to the specified load when the grid power fails, so it needs to have the islanding effect protection function.
Post time: Jun-24-2022
