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Electrical Engineering

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01-03-2015 | Original Paper

Running up and pulling into step of PM line-start motors with surface-mounted magnets

Authors: Gerhard Huth, Ralf Fischer

Published in: Electrical Engineering | Issue 1/2015

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Abstract

Permanent magnet (PM) synchronous motors with starting cage, already developed in the 1960s for variable-speed textile drives, become increasingly important as energy-efficient PM line-start motors. Differing from the standard design with integrated magnets, a rotor design with surface-mounted magnets is presented. In the planning and design phase of drives with PM line-start motors, the simulation of switching on, running up, and pulling into step is essential. An analytical model is presented leading to voltage and mechanical differential equations that have to be solved simultaneously. Based on a prototype, the suitability of the presented model is demonstrated by direct comparison of simulated to measured data. Besides, the mean influence factors of the pulling-into-step behavior are identified and discussed.

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Title: Running up and pulling into step of PM line-start motors with surface-mounted magnets
Authors: Gerhard Huth
Ralf Fischer
Publication date: 01-03-2015
Publisher: Springer Berlin Heidelberg
Published in: Electrical Engineering / Issue 1/2015
Print ISSN: 0948-7921
Electronic ISSN: 1432-0487
DOI: https://doi.org/10.1007/s00202-014-0308-z

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