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2026-05-27
Structural Optimization of Short Primary Single-Sided Linear Induction Motor
By
Progress In Electromagnetics Research C, Vol. 171, 25-33, 2026
Abstract
This study focuses on a Short-Primary Single-Sided Linear Induction Motor (SSLIM), which is widely used in the rail transit sector due to its low operating noise and small turning radius. Therefore, designing linear induction motors with better performance is of great significance. This study aims to enhance electromagnetic thrust and reduce fluctuations in electromagnetic force by optimizing the motor's structural design. First, a motor model is established based on its operating principles, and a brief analysis of its electromagnetic characteristics is conducted. Second, two design schemes were selected for both the primary and secondary components. For the primary components, one scheme employs a chamfered structure to suppress fluctuations in electromagnetic force, while the other modifies the tooth tip shape from rectangle to trapezoid to increase thrust. For the secondary components, one scheme involves incorporating a material with higher electrical conductivity into specific areas of the aluminum plate, and the other involves slotting to optimize the magnetic field distribution and increase thrust. Finally, the performance of the optimized model was compared with that of the initial model. The results showed that the average thrust increased by 5.3%, while the fluctuations in thrust and normal force decreased by 13.6% and 30%, respectively, validating the effectiveness of the optimization approach.
Citation
Cheng Wen, Zilei Duan, Mingye Li, and Aosai Li, "Structural Optimization of Short Primary Single-Sided Linear Induction Motor," Progress In Electromagnetics Research C, Vol. 171, 25-33, 2026.
doi:10.2528/PIERC26040103
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