Inverters are also called AC Drives, or VFD (variable frequency drive). They are electronic devices that can turn DC (Direct Current) to AC (Alternating Current). It is also responsible for controlling speed and torque for electric motors.

Inverters are used in any application where a DC power source must be converted to an AC power source. The most common applications are in battery-powered mobile and marine vehicles, uninterruptible power supplies, renewable energy generation systems, and stationary battery banks.​​