What is the primary function of an inverter?

The primary function of an inverter is to convert direct current (DC) into alternating current (AC). This process is crucial in various applications, especially in renewable energy systems like solar power, where solar panels generate DC electricity that needs to be converted into AC for use in home appliances or to be fed into the electrical grid.

Inverters enable the use of AC power, which is more commonly used in homes and businesses, and ensures compatibility with standard electrical systems. The conversion process involves creating a waveform that mimics AC power, allowing for the smooth operation of devices that require alternating current.

The other options involve functions that are not applicable to inverters. For instance, changing AC to DC is a role fulfilled by rectifiers, while storing electrical energy is typically the function of batteries or capacitors. Regulating voltage levels is a function associated with voltage regulators or transformers, which are distinct from the role of an inverter. Thus, the choice identifying the function of converting DC to AC accurately describes the inverter's primary role in electrical systems.