July 2023
Intermediate to advanced
736 pages
21h 18m
English
Content preview from Linear Electric Machines, Drives, and MAGLEVs Handbook, 2nd Edition
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5 Design of Flat and Tubular Low-Speed LIMs
5.1 Introduction
Low-speed LIMs are LIMs whose dynamic end effects can be neglected [(γ2rτ)−1 <2p/10] (as described in Chapter 3). They have to be designed, consequently, for a goodness factor less than the optimum value Ge0 (Chapter 3), which varies linearly with the number of poles 2p (Ge = 10 for 2p = 4 and Ge = 40 for 2p = 16).
Though we are intuitively tempted to assimilate low speed with low goodness factor and thus dynamic end effect neglection, the situation is more complex, as in principle we could obtain the same equivalent goodness factor G and thus the same dynamic end effect (for the given pole count and slip), for up to 3/1 speed range [1].
So, should we ...
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