Theory and Operation of Reluctance Motors with Magnetically Anisotropic Rotors Part I Analysis

The axially laminated anisotropic reluctance motor, while promising superior operating characteristics is also provingmore difficult-to analyse than other types of reluctance motor. The reason being that not only the external magnetic dissymmetry but also the internal magnetic anisotropy must be considered. The basic theory behind the design of an axially laminated rotor is outlined, followed by the calculation of the flux density distribution using numerical methods. The effects of such design parameters as stacking factor of the laminations, degree of anisotropy of the laminations and pole span are considered.