Inverter generators work by generating three-phase AC power at a high frequency. It is then converted to direct current, then back to alternating current that can be used by electronic equipment and appliances.
This process is often called "clean power", which means stable and consistent current and a stable sine wave delivery. This will not cause a fluctuation in voltage, which happens with traditional generators. Uncontrolled fluctuations of power are very dangerous to many high-tech and sensitive electronics, such as computers.
Inverter generators are a fairly new concept but are becoming more and more popular for recreational use and emergency back-up power.
The engine speed of inverter generators is regulated to match the load on the generator, unlike traditional generators that run at a constant speed with no variation to engine speed. Inverter generators have the ability to adjust engine speed to produce the correct amount of power required to run the appliances being used.
Inverter generators are more fuel-efficient and make less noise and vibration than traditional generators.
This makes inverter generators economical to operate and more environmentally friendly.