Conference article

Motor Management of Permanent Magnet Synchronous Machines

Anton Haumer
AIT Austrian Institute of Technology GmbH, Vienna, Austria

Christian Kral
AIT Austrian Institute of Technology GmbH, Vienna, Austria

Download articlehttp://dx.doi.org/10.3384/ecp12076159

Published in: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Linköping Electronic Conference Proceedings 76:15, s. 159-166

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Published: 2012-11-19

ISBN: 978-91-7519-826-2

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Two state-of-the-art machine designs are mainly used in recent electric and hybrid electric vehicles: asynchronous induction machines with squirrel cage which are robust but need a current component to excite the magnetic field; and permanent magnet synchronous machines which rely on somehow more sensible parts but the magnets are able to excite a magnetic field without current. However; if speed gets high enough to reach the field weakening range; for both machine the field oriented control has to prescribe a field current sufficient to reduce the field not to exceed the voltage limits of the stator circuit. Especially for the permanent magnet synchronous machine this paper investigates whether it is possible to determine an optimal field current for every operation point to minimize either total current consumption or losses.

Keywords

Permanent Magnet Synchronous Machine; Field Oriented Control; Optimization of Field Current

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