The photovoltaic inverter can convert the variable DC voltage generated by the photovoltaic solar panels into alternating current. The selection of the inverter should match the photovoltaic components. The following principles should be followed during the selection process:

1. The voltage after multiple components are connected in series is the sum of the voltages of each component. The working efficiency is the highest when the operating voltage is around the rated working voltage of the inverter.
2. The maximum open-circuit voltage after the strings are connected should not exceed the maximum voltage of the inverter.