Bubbles and Blisters Impact on Diecasting Cage to the Designs and Operations of Line-Start Synchronous Reluctance Motors

Huai Cong Liu, Hyun Seok Hong, Sooyoung Cho, Ju Lee, Chang Sung Jin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study investigates the starting capability of a high-efficiency synchronous reluctance motor for direct online industrial applications. Because of structural limitations, line-start synchronous reluctance motors (LS-SynRMs) are commonly diecasted by reducing pressure to ensure safe manufacturing. Hence, the shape of the squirrel-cage bars, including bubbles and blisters in the rotors of LS-SynRM, needs to be analyzed. In this paper, three different models are proposed to model the random bubble and blister phenomena by using 2-D finite-element analysis (FEA); their impacts on the flux paths and the change in exciting current of the squirrel-cage bars due to the unbalanced bubbles are thoroughly evaluated. Finally, consider that the bubbles' impacts are confirmed by manufacturing the prototype motor and performing the experiment. The results of FEA and the experiment clearly indicate that the impacts of additional bubbles and blisters need to be considered in the design of LS-SynRMs.

Original languageEnglish
Article number7845588
JournalIEEE Transactions on Magnetics
Volume53
Issue number6
DOIs
StatePublished - 2017 Jun 1

Fingerprint

Reluctance motors
Synchronous motors
Finite element method
Industrial applications
Rotors
Experiments
Fluxes
Sciuridae

Keywords

  • Asynchronous operation
  • LS-SynRM
  • bubbles impact
  • diecasting
  • steady state

Cite this

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title = "Bubbles and Blisters Impact on Diecasting Cage to the Designs and Operations of Line-Start Synchronous Reluctance Motors",
abstract = "This study investigates the starting capability of a high-efficiency synchronous reluctance motor for direct online industrial applications. Because of structural limitations, line-start synchronous reluctance motors (LS-SynRMs) are commonly diecasted by reducing pressure to ensure safe manufacturing. Hence, the shape of the squirrel-cage bars, including bubbles and blisters in the rotors of LS-SynRM, needs to be analyzed. In this paper, three different models are proposed to model the random bubble and blister phenomena by using 2-D finite-element analysis (FEA); their impacts on the flux paths and the change in exciting current of the squirrel-cage bars due to the unbalanced bubbles are thoroughly evaluated. Finally, consider that the bubbles' impacts are confirmed by manufacturing the prototype motor and performing the experiment. The results of FEA and the experiment clearly indicate that the impacts of additional bubbles and blisters need to be considered in the design of LS-SynRMs.",
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Bubbles and Blisters Impact on Diecasting Cage to the Designs and Operations of Line-Start Synchronous Reluctance Motors. / Liu, Huai Cong; Hong, Hyun Seok; Cho, Sooyoung; Lee, Ju; Jin, Chang Sung.

In: IEEE Transactions on Magnetics, Vol. 53, No. 6, 7845588, 01.06.2017.

Research output: Contribution to journalArticle

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AU - Lee, Ju

AU - Jin, Chang Sung

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