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Electrical Machine Design by V. S. Nagarajan, V. Rajini

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8

COMPUTER-AIDED DESIGN AND ANALYSIS OF ELECTRIC MOTORS

8.1 Introduction

The necessity of accurate models for design and analysis of the electrical machines has promoted the use of numerical models, based on Maxwell’s equations for determining electric and magnetic fields. Determination of analytical solution becomes difficult, due to complex geometrical machine structures and the nonlinearities in the magnetization curve of the motor steel laminations. Hence, Finite Element Analysis (FEA) method, a numerical technique, provides an alternative approach to predict the performance of an electric machine. In FEA, the entire field problem domain is divided into elementary subdomains, which are called finite elements, and the field equations are ...

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