摘要：结合多相旋转电机低压大功率，低转矩脉动特性与永磁电机功率因数高的优点，设计了一种应用于电磁推进的双边滑片型十二相永磁直线电机。设计方案对多相绕组磁动势和电机尺寸及电流等级的确定进行了详细推导分析。借助有限元分析软件FLUX对设计方案进行了仿真分析和结构优化，结果表明结构优化后的十二相永磁直线电机采用方波供电可输出高达4092 kN的推力且推力脉动值为062%左右，最后通过样机实验验证了理论和仿真的正确性。
关键词：电磁推进；多相绕组；永磁直线同步电机；有限元分析
Abstract: Combined with lowvoltage highpower, low torque ripple characteristics of multiphase motor,and the advantage of high power factor of permanent magnet motor, a bilateral blade type12phase permanent magnet linear motoris designed to be used in electromagnetic propulsion. In the design scheme, magnetomotive force of multiphase winding,basic machine size and current ratingare derived in detail.With the help of finite element analysis software FLUX, simulation analysis and structure optimization were carried out to verify the proposed design. Results prove the design meet requirements and show that when the motor is supplied by square wave, and applied with optimized structure parameters,it can output thrust as high as 4092 kN,and the fluctuation is onlyabout 062%.Finally a prototype was built and experiment was done to verify the proposed design.
Key words: electromagnetic propulsion;multiphase winding; permanent magnet synchronous motor; finite element analysis