Dynamoelectric machine with permanent magnet and magnet mounting surface arrangement

A dynamoelectric machine having a rotor and a stator, one of the rotor and stator comprising a plurality of wound electromagnetic poles, the other of the rotor and stator comprising, in combination:

• a core comprising a plurality of substantially identical lamina of a magnetic material, the lamina having a circular circumference and being axially stacked to form a cylindrical surface;
• a sleeve made of a non-magnetic material and having a cylindrical surface adjacent the cylindrical surface of the core, the sleeve having an opposing surface comprising a plurality of flat, rectangular, magnet mounting surfaces, the magnet mounting surfaces being grouped in axial groups with each successive magnet mounting surface of each axial group, proceeding from one axial end of the core, rotationally offset about the common axis by a common angle from the previous magnet mounting surface of the axial group;
• and
• a plurality of identically shaped permanent magnets mounted one on each of the magnet mounting surfaces, the magnets having flat surfaces adjacent the magnet mounting surfaces and arcuate surfaces opposite the flat surfaces, the arcuate surfaces forming a generally cylindrical surface adjacent the stationary poles, each of the magnets further having the shape, when viewed radially, of a parallelogram forming a skew angle with the axis corresponding with the rotational offset of the magnet mounting surfaces to define skewed slots between skewed magnetic poles extending the substantial axial length of the core.