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Synchronous Reluctance Machine (SynRM) Design
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.
2007 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Synchronous Reluctance Motor (SynRM) has been studied. A suitable machine vector modelhas been derived. The influence of the major parameters on the motor performance has beentheoretically determined.Due to the complex rotor geometry in the SynRM, a suitable and simple combined theoretical(analytical) and finite element method has been developed to overcome the high number ofinvolved parameters by identifying some classified, meaningful, macroscopic parameters.Reducing the number of parameters effectively was one of the main goals. For this purpose,attempt has been made to find and classify different parameters and variables, based on availableliteratures and studies. Thus a literature study has been conducted to find all useful ideas andconcepts regarding the SynRM. The findings have been used to develop a simple, general, finiteelement aided and fast rotor design procedure. By this method rotor design can be suitablyachieved by related and simplified finite element sensitivity analysis.The procedure have been tested and confirmed. Then it is used to optimize a special rotor for aparticular induction machine (IM) stator. This optimization is mainly focused on the torquemaximization for a certain current. Torque ripple is also minimized to a practically acceptablevalue. The procedure can also be used to optimize the rotor geometry by considering the othermachine performance parameters as constrains.Finally full geometrical parameter sensitivity analysis is also done to investigate the influence ofthe main involved design parameters on the machine performance.Some main characteristics like magnetization inductances, power factor, efficiency, overloadcapacity, iron losses, torque and torque ripple are calculated for the final designs and in differentmachine load conditions.Effects of ribs, air gap length and number of barriers have been investigated by means of suitableFEM based method sensitivity analysis.

Place, publisher, year, edition, pages
2007. , 95 p.
EES Examensarbete / Master Thesis
Keyword [en]
Synchronous reluctance motor, sensitivity analysis, main parameter, transversally laminated anisotropy, design, vector model, torque ripple minimization, torque maximization, optimization, geometric parameter, saliency ratio, finite element analysis, theoretical rotor geometry model, combined optimization.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-153663OAI: diva2:753114
Subject / course
Electrical Machines and Power Electronic
Educational program
Master of Science - Electric Power Engineering
Available from: 2014-10-21 Created: 2014-10-07 Last updated: 2014-10-21Bibliographically approved

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