Patent ID: 7468569

Claim:
A method for constructing a dynamoelectric machine that is an axial airgap device, comprising: (a) providing at least one stator assembly comprising a backiron section and a plurality of tooth sections, said stator assembly having a slot having a slot width between each adjacent pair of said tooth sections and a plurality of stacked stator phase windings present in each of said slots, each winding encircling one or more of said tooth sections and occupying substantially the full available slot width and said stator assembly also comprising low core loss magnetic material that is characterized by a core loss less than “L” when operated at an excitation frequency “f” to a peak induction level “B max ” wherein L is given by the formula L=12·f·B 1.5 +30·f 2.3 ·B 2.3 , the core loss, excitation frequency and peak induction level being measured in watts per kilogram, kilohertz, and teslas, respectively; and (b) providing at least one rotor assembly supported for rotation about an axis and including a plurality of rotor poles, said rotor assembly being arranged and disposed for magnetic interaction with said at least one stator assembly.