Author(s)

S. Elia, M. Pasquali, G. Remigi, M.V. Sabene & E. Santini

Abstract

A modified Maxwell stress tensor method for the evaluation of electromagnetic torque S. Elial, M. Pasquali?, G. Remigi*, M. V. Sabenel & E. Santini^ * Dipartimento di Ingegneria Elettrica Universita di Roma "La Sapienza ", Rome, Italy. ^Centro Ricerche Enea Casaccia, Rome, Italy. Abstract This paper shows a new numerical technique for the FEM calculation of the electromagnetic torque in a rotating electric machine. This is an extension of the well-known Maxwell stress tensor method, applied to circular paths that lie entirely in the airgap of rotating machines. Applications allow to evaluate the effectiveness of the method. 1 Introduction There are a number of algorithms that allow numerical evaluation of mechanical forces due to magnetic interactions. They are commonly used in FEM analysis of power devices: [1, 2, 3]: 1. Virtual works; 2. Maxwell stress tensor (MST). These methods are completely general, and they are not specialized for the evaluation of forces and/or o

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