Title :
Cutting and Punching Impacts on Laminated Electromagnetic Steels to the Designs and Operations of Synchronous Reluctance Motors
Author :
Cheng-Tsung Liu ; Bo-Yan Chang ; Kuo-Yuan Hung ; Sheng-Yang Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan
Abstract :
This paper is aimed to provide the detailed design and operational investigations of synchronous reluctance motors (SynRM) that are commonly assembled by laminated electromagnetic steels. The magnetic flux paths in the SynRM rotors with various barrier and segment compositions will be analyzed, along with the generated motor torque and loss assessments. As the related mechanical cutting and/or punching processes on the rotor steels are required to achieve desired direct- and quadrature-axis reluctance ratios, their impacts to the flux paths due to saturations will also be thoroughly evaluated. Assisted by 3-D finite-element analyses, the results clearly indicated that the additional annealing process on the electromagnetic steel strips must be introduced for these SynRM designs with smaller sizes and higher efficiency requirements.
Keywords :
annealing; cutting; electrical products industry; finite element analysis; magnetic flux; punching; reluctance motors; rotors; steel; 3D finite-element analyses; SynRM designs; SynRM rotors; annealing process; direct-axis reluctance ratios; electromagnetic steel strips; laminated electromagnetic steels; magnetic flux paths; mechanical cutting; motor torque; punching impacts; punching processes; quadrature-axis reluctance ratios; rotor steels; synchronous reluctance motors; Electromagnetics; Iron; Magnetic flux; Punching; Rotors; Stator windings; Steel; Anneal; cutting and punching; flux barrier; laminated electromagnetic steel; magnetic flux path; saturation; synchronous reluctance motor; synchronous reluctance motor (SynRM);
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2015.2399614