Today, a large part of photovoltaic systems are used connected to the grid, and photovoltaic inverters or solar inverters that convert direct current into alternating current are responsible for this connection. A (Solar Inverter) must have desirable features to have a proper performance as the power transmission part of the photovoltaic system. The power inverter control approach that connects the photovoltaic source to the power grid must meet the following main objectives to ensure efficient energy transfer:
Proper conversion of DC input power into an AC output current that is injected into the grid. This current should have a low total harmonic distortion or THD. In addition, the system must be controlled to provide an acceptable power factor (PF).
Obtaining the maximum power from the photovoltaic source using the maximum power point tracking (MPPT) of solar panels that changes with the intensity of sunlight and temperature.
Source: https://palmoreco.com/blog/faq-about-photovoltaic-inverters/