The linear induction motor is mainly adopted for traction or motion transmission applications. Some advantages of linear induction motors are: a direct electromagnetic thrust propulsion (no need of mechanical transmissions), low maintenance costs and precision linear positioning; on the other hand, this motor topology has low power factor and efficiency, longitudinal and transversal edge-effect. This paper proposes a novel fast simulation method to evaluate the performance and machine parameters of a double-sided linear induction motor via 2-D finite element analysis considering both a magnetic time-harmonic and magnetostatic problems. The thrust force is computed tuning the secondary aluminum plate resistivity as a function of the path length of the induced eddy currents due to the fundamental of the air gap magnetomotive force. The proposed method has been verified via several 2-D finite element simulations and validated with experimental tests.
High Air Gap Linear Induction Motor Fast Simulation / Bianchini, C.; Torreggiani, A.; Davoli, M.; David, D.; Sala, A.; Bellini, A.. - (2021), pp. 1-5. (Intervento presentato al convegno 2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021 tenutosi a usa nel 2021) [10.1109/IEMDC47953.2021.9449560].
High Air Gap Linear Induction Motor Fast Simulation
Bianchini C.
Conceptualization
;Torreggiani A.Writing – Original Draft Preparation
;
2021
Abstract
The linear induction motor is mainly adopted for traction or motion transmission applications. Some advantages of linear induction motors are: a direct electromagnetic thrust propulsion (no need of mechanical transmissions), low maintenance costs and precision linear positioning; on the other hand, this motor topology has low power factor and efficiency, longitudinal and transversal edge-effect. This paper proposes a novel fast simulation method to evaluate the performance and machine parameters of a double-sided linear induction motor via 2-D finite element analysis considering both a magnetic time-harmonic and magnetostatic problems. The thrust force is computed tuning the secondary aluminum plate resistivity as a function of the path length of the induced eddy currents due to the fundamental of the air gap magnetomotive force. The proposed method has been verified via several 2-D finite element simulations and validated with experimental tests.
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