A hybrid permanent magnet and wound field synchronous machine with displaced reluctance axis capable of symmetric four quadrant operation

This paper presents a novel hybrid permanent magnet and wound field synchronous machine geometry with a displaced reluctance axis. This concept is known for improving motor operation performance and efficiency at the cost of an inferior generator operation. To overcome this disadvantage, the propose...

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Bibliographic Details
Published in2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe) pp. 1 - 11
Main Authors Winzer, Patrick, Doppelbauer, Martin
Format Conference Proceeding
LanguageEnglish
Published Jointly owned by IEEE-PELS and EPE Association 01.09.2016
Subjects
AC machine
Adjustable speed drive
Efficiency
Electrical machine
Geometry
Inverters
Prototypes
Rotors
Stator windings
Synchronous motor
Test bench
Torque
Variable speed drive
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Summary:This paper presents a novel hybrid permanent magnet and wound field synchronous machine geometry with a displaced reluctance axis. This concept is known for improving motor operation performance and efficiency at the cost of an inferior generator operation. To overcome this disadvantage, the proposed machine geometry is capable of inverting the magnetic asymmetry dynamically. Thereby, the positive effects of the magnetic asymmetry can be used in any operation point. This paper examines the theoretical background and shows the benefits of this geometry by means of simulation and measurement. The prototype achieves an increase in torque of 4 % and an increase in efficiency of 2 percentage points over a conventional electrically excited synchronous machine.
DOI:10.1109/EPE.2016.7695296