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A Design and Driving Characteristics of Novel Hybrid Pole Bearingless SRM  

Lee, Dong-Hee (경성대학교 전기전자메카트로닉스공학부)
Wang, Hui-Jun (경성대학교 공과대학)
An, Young-Joo (부경대학교 제어계측공학부)
Ahn, Jin-Woo (경성대 전기전자메카트로닉스공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.12, 2008 , pp. 2202-2207 More about this Journal
Abstract
Bearingless SRM(Switched Reluctance Motor) is researched for high speed or special applications which can not use mechanical bearing such as bio pump. In this paper, a novel hybrid pole bearingless SRM is presented. The proposed hybrid pole bearingless SRM has salient poles for torque and suspending force production. Motor torque is controlled by the phase currents in torque pole windings, and the suspending force is controlled by suspending currents in four suspending windings for radial direction suspension. Because the proposed bearingless SRM has divided pole structure, mutual effects between torque current and suspending current are very lower than the conventional one's. From this structure, the number of power devices for power converter can be reduced for bearingless SRM driving. The proposed hybrid pole bearing less SRM is verified by the FEM analysis and experimental results.
Keywords
Bearingless; SRM; Hybrid pole; Suspending force; Radial force;
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