Calculate the air-gap magnetic field of tubular permanent magnet linear motor base on equivalent surface current model
by Ke-feng Huang; Huai-shu Li; Yu Zhou
International Journal of Engineering Systems Modelling and Simulation (IJESMS), Vol. 6, No. 1/2, 2014

Abstract: The air-gap magnetic field is an important design parameter for tubular permanent magnet linear motor including surface-mounted PMs (TPMSLM), as it significantly influences the thrust force capability and efficiency. Based on the results indicate that the existing analytical research methods of the air-gap magnetic field is not accurate. This tool has calculated the air-gap magnetic field of the current-carrying coil. Next, the analytic formula of air-gap magnetic field of the motor is derived from the equivalent surface current model. In order to verify the validity and accuracy of the proposed method, we took approximately a TPMSLM to analyse it. The results show that: the analytical method and finite element method to calculate the air-gap magnetic field were both in good agreement. The proposed motor air-gap magnetic field method is quick, effective, and had a high accuracy rate.

Online publication date: Tue, 17-Jun-2014

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