Abstract
The Fourier series method used to solve differential field equations in linear induction motors (LIM) is based on a computational model in which the real primary is replaced by a series of fictitious primaries distributed along the direction of motion. The distance between adjacent primaries ought to be big enough to avoid the influence of the preceding primary field on the following one. In the paper, the authors propose a method of determination of this distance but only for the computational LIM model which takes into account the finite length of primary current sheet while the iron core is assumed to be infinitely long. As an example of application of this method calculations have been made for low and high speed LIMs.
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