Three-phase solar inverters are designed for large-scale solar power systems. They are capable of handling higher levels of power and are often used in commercial and industrial installations. Three-phase inverters have a higher efficiency and reliability compared to single-phase inverters, making them an ideal choice for large systems. They also have the ability to handle a wider range of voltages and have a lower total harmonic distortion (THD) than single-phase inverters. This means that three-phase inverters produce a cleaner and more stable AC output, leading to improved grid stability and energy savings.