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Stator Coils for motors

The stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, mud motors or biological rotors. Energy flows through a stator to or from the rotating component of the system. In an electric motor, the stator provides a magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.

The stator coil is the stationary part of your permanent magnet alternator (PMA), composed of iron core, enameled wire, rator and copper strips, etc.

In all direct drive small wind turbines the average shaft RPM is 500 to 1500 RPM for small direct drive propellers. At this RPM you MUST HAVE finer copper wire to make 12 volts and especially for making 24 or 48 volts.
stator coils for motors
Depending on the configuration of a spinning electromotive device the stator may act as the field magnet, interacting with the armature to create motion, or it may act as the armature, receiving its influence from moving field coils on the rotor. The first DC generators (known as dynamos) and DC motors put the field coils on the stator, and the power generation or motive reaction coils on the rotor. This is necessary because a continuously moving power switch known as the commutator is needed to keep the field correctly aligned across the spinning rotor. The commutator must become larger and more robust as the current increases.

Stator winding of a generator at a hydroelectric power station.
The stator of these devices may be either a permanent magnet or an electromagnet.

An AC alternator produces power across multiple high-current power generation coils connected in parallel, eliminating the commutator.

Fluid devices
In a turbine, the stator element contains blades or ports used to redirect the flow of fluid. Such devices include the steam turbine and the torque converter. In a mechanical siren, the stator contains one or more rows of holes that admit air into the rotor; by controlling the flow of air through the holes, the sound of the siren can be altered. A stator can reduce the turbulence and rotational energy introduced by an axial turbine fan, creating a steady column of air with a lower Reynolds number.

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