An analytic calculation method of the magnet field in Tubular Permanent Magnet Linear Synchronous Motor (TPMLSM)

Abstract

Analytic magnetic field calculation method is introduced which is based on scalar magnetic potential with Schwarz-Christoffel Transform of axial magnetised TPMLSM. The results of magnetic field distribution are obtained in slotless and slotted motor. Finite element method is used to testify the magnetic field distribution, there is almost no difference in the error results of in narrow airspace slotless and slotted motor, but the value is equal to the middle winding flux density in wider airspace slotless motor. Finally, the results of the slotless prototype magnetic field distribution with zero load are given; it is verified that the analysis and design prototype are correct.

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Vibration Characteristic of Multi-Stage Linear Motor Pumping Unit

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