One such machine had 600 pole pairs in the stator winding, and the rotor was driven at 2170 RPM, for an output frequency near 21.7 kHz.
22.
If the stator winding is a two-pole winding, moving the rotor through 180 degrees physically will change the phase of the induced voltage by 180 degrees.
23.
The traction motors are three phase synchronous type ( as used in the contemporary TGV Atlantique ) but with two three phase stator windings offset by 30 degrees.
24.
Low conductivity demineralised water is circulated through the stator windings by a pump and passes through coolers and a filter before entering the inlet manifold of the winding.
25.
In the linear synchronous motor, the copper or aluminum is replaced by large magnets under the cars which are attracted to or repelled by the magnetic field generated in the stator windings.
26.
Often there are three sets of stator windings, physically offset so that the rotating magnetic field produces a three phase current, displaced by one-third of a period with respect to each other.
27.
It is called synchronous because the composite magnetic field produced by the three stator windings rotate at the same speed as the magnetic field produced by the field winding on the rotor.
28.
Paraphrasing from Alger in Knowlton, an induction motor is simply an electrical transformer the magnetic circuit of which is separated by an air gap between the stator winding and the moving rotor winding.
29.
If the stator winding is connected to the primary phase, the total voltage seen from the neutral ( N ) will be the sum of the voltages at both windings rotor and stator.
30.
For the highest power generators, up to 1800 MW, hydrogen and water cooling is used; the rotor is hydrogen-cooled, the stator windings are made of hollow copper tubes cooled with water circulating through them.
