Patent ID: 7646131

Claim:
A permanent magnet synchronous machine, comprising: a rotor; a stator interacting with the rotor and having a first plurality of rectangular teeth and a second plurality of wedge-shaped teeth arranged in alternating sequence to define parallel-flanked slots disposed in a circular spaced-apart relationship; and a winding system provided in the slots and made of flat wires to surround the rectangular teeth in the form of tooth-wound coils, whereas the wedge-shaped teeth remain unwound, thereby implementing an alternating sequence of wound and unwound teeth, said wedge-shaped teeth being sized to have a rotor-proximal end extending beyond a rotor-proximal end of the tooth-wound coils, wherein the flat wires are wound edgewise so that a narrower side of each of the flat wires points toward the tooth, and wherein each tooth-wound coil has at least two winding layers of flat wires in axial side-by-side disposition, with each of the winding layers being stacked radially.