Some Considerations on Electromagnetic Vibration in a LIM for a Train

Abstract

This paper considers the generation of noise in a linear induction motor (LIM) used in a linear motor car. Frequency analysis of the electromagnetic vibration established that the noise in the LIM was generated mainly by the electromagnetic attractive force between the primary member and the reaction plate (RP) and that also by high-frequency flux due to the input current supplied from a VVVF inverter.