High frequency synchronous rotary electrical machine

摘要: A synchronous rotary electrical machine. According to the first aspect of present invention, phase difference between stator teeth and nearest rotor is a stepwise function azimuthal tooth position. In preferred embodiment grouped into two or more sets, machine multiphase. Each set associated with an armature winding wound in plane perpendicular rotational axis The are spaced at same pitch as single set. When direct current provided excitation concentric axis, m-phase alternating EMF induced windings. With tandem groups such sets teeth, each its own pitch, EMFs different frequencies generated. Two heterodyned provide frequency. second axially adjacent, facing radial distance from axis. If phase, there equal numbers teeth. can have allowing generation frequencies, heterodyning thereof