Structural Optimizations of High-efficiency Direct-On-Line Synchronous Reluctance Motors for Metal Industry Applications

To meet the severe operating conditions in the metal industry, more thorough design and operational assessments about those implemented electric motors for specific applications must be emphasized. With its inherent robust structure, the induction motor is generally adopted to fulfill such driven ob...

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Bibliographic Details
Published inIEEE transactions on industry applications Vol. 57; no. 3; pp. 3004 - 3011
Main Authors Liu, Cheng-Tsung, Li, Yu-Xuan, Yen, Sheng-Chan, Hsu, Yu-Wei, Luo, Ta-Yin, Shih, Pei-Chun, Lin, Sheng-Yang
Format Journal Article
LanguageEnglish
Published New York IEEE 01.05.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Conductors
Construction costs
Copper loss
Current density
direct-on-line (DOL)
Efficiency
Electric motors
Global warming
Induction motors
Industrial applications
laminated electrical steel
magnetic flux path
Metal industry
Metals industry
Reluctance
Reluctance motors
Rotors
Stator windings
Steady-state
synchronous reluctance motor (SynRM)
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Summary:To meet the severe operating conditions in the metal industry, more thorough design and operational assessments about those implemented electric motors for specific applications must be emphasized. With its inherent robust structure, the induction motor is generally adopted to fulfill such driven objective. However, due to global warming and energy conservation concerns, those strictly enforced regulations have potentially increased the complexity and cost of high efficiency induction motor. Since the synchronous reluctance motor (SynRM) has relatively simpler structure with no copper loss in its rotor, it is a very attractive alternative for accomplishing the high-efficiency objectives of those common hoist, punch, roller, and pump applications. In addition, to eliminate drive circuits that can further reduce the overall system construction costs, the rotor barriers of the SynRM can be equipped with direct-on-line capability (DOL_SynRM) with conductors filled in. The impacts to the operational performance of these DOL_SynRMs for different applications will all be thoroughly investigated. The competitive high-efficiency DOL_SynRMs for driving various metal industry equipment can thus be offered.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2021.3064550