Single Phase Stator VS Three Phases Stator

Every ATV has either a single phase stator or a three phase stator. Ultimately, they both do the same job of generating electricity to power the ATV. The difference between the two lies in how they are wired and in the output they provide.

Single Phase Stator

The single phase stator is the simpler of the two. It is made of a single wire wound on every pole of the stator. A single phase stator generates AC power that alternates from positive to negative very quickly; meaning that in every cycle, there is a moment where the stator generates no current, as it reaches 0 volts (see Figure 1). This moment happens so fast you won’t notice it. However, a single phase stator will be less powerful overall than a three phase stator. For that reason a single phase stator will require more RPMs to generate power. The faster the engine turns, the shorter the “0 moment” will be and more electricity will be generated by the stator.

Three Phase Stator

A three phase stator is basically the same as a single phase stator except that there are three separate coils wound around the stator. Just like on the single phase stator, each phase will, in turn, near 0 volts. The difference is, when one phase of the three phase stator nears 0 volts, the other two phases still produce around 75% of their maximum output (see Figure 2), resulting in significantly more power and electricity generated at all times, which means the stator is much less dependent on engine RPM.