Thrust Optimization and Thermal Analysis of a Water-Cooled Double-Sided Permanent Magnet Linear Synchronous Motor

A water-cooled, double-sided permanent magnet linear synchronous motor (PMLSM) is studied by electromagnetic and thermal finite-element (FE) analysis method. Based on electromagnetic analysis, the better structure of this double-sided PMLSM can be obtained after thrust optimization by adjusting motor structure parameters. In order to minimize the thrust ripple, it is further optimized by shifting permanent magnets or armature iron cores of two sides for a small distance. With thermal analysis, the temperature distribution and transient temperature variation of this optimal PMLSM are investigated under the continuous operation and the short-time operation.

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