| Abstract |
The paper deals wilh two different typologies of brushless motors: permanent magnet (PM) and variable reluctance (VR). On tbe basis of the generalized theory of functions, an electromagnetic torque expression is proposed that is useful for both brushless motors. The analysis of the armature currents versus rotor position laws, that gives rise to maxima possible values of the electromagnetic torque, is performed. A second part of the paper is devoted to the comparative analysis of power electromagnetic converting capability of both PM and VR structures. The analysis is devoted to the evaluation of the weight of the air-gap variable reluctance on the electromagnetic torque developed for given boundary values of the airgap flux density and of the armature current. |
