Patent ID: 6252331
Filing Date: 2001-06-26
Classification: H02K,H02P

Abstract:
A rotor for use in an electromechanical machine functioning as either a motor or an alternator, the electromechanical machine having a rotatable shaft along an axis of rotation, the rotor comprising:a first and a second phase assembly, each of the first and the second phase assembly comprising:a cup-shaped core concentric with the rotatable shaft;a coil disposed inside said cup-shaped core and solenoid-wound with respect to the axis of rotation to provide two coaxial poles at a single end of said cup-shaped core, said coil and cup-shaped core non-rotating and fixedly mounted within the electromechanical machine; andtwo pole-piece assemblies positioned so that a magnetic field from said two coaxial poles is coupled to said two pole-piece assemblies without direct physical contact, said two pole-piece assemblies fixedly mounted to said rotatable shaft, each polepiece assembly having two or more pole pieces elongated in a direction parallel to said axis of rotation;wherein said two or more pole pieces of said first phase assembly are interleaved with said two or more pole pieces of said second phase assembly.