MOVEMENT SIMULATION IN FINITE-ELEMENT ANALYSIS OF ELECTRIC MACHINE DYNAMICS

The methods of movement simulation in the coupled field-circuit analys is of rotating electric machines are considered. Special attention is paid to the application of moving band techniques in the FE analysis o f electromechanical transients. A new approach to the formulation of b and matrix as a function of rotor position is proposed. The matrix of moving band is expressed by trigonometric interpolating polynomial whi ch is based on the matrices for discrete rotor positions. The method i s verified by comparison of the analytical and numerical results of to rque calculation and is applied in the analysis of permanent magnet mo tor dynamics.