【摘要】 建立无槽式永磁直线同步电动机分层解析模型,由于电机等效气隙较长、漏磁较大,采用磁化电流法等效永磁体电流密度,电枢电流按实际情况考虑。以矢量磁位作为求解变量得到励磁磁场和电枢反应磁场的二维解。在此基础上求电机的电磁参数:气隙磁密、电磁推力、电感和电势等。进一步分析气隙长度对电机磁场的影响,用有限元法验证解析结果,两种方法所得结果吻合较好,表明该解析法行之有效。更多还原

【Abstract】 Due to larger equivalent air-gap and flux leakage of slotless permanent magnet linear synchronous motor(PMLSM),magnetizing current method was adopted to obtain equivalent current density of permanent magnet,however armature current was considered in practice.Magnetic vector potential was regarded as variables to gain solution of excitation magnetic field and armature response magnetic field.Through two-dimensional analytical method,air-gap magnetic flux density,thrust force,inductance,back electromotive force(back EMF)were computed.Furthermore,different air-gap effect on magnetic field in slotless PMLSM was analyzed.The finite element method(FEM)was confirmed agreement with analytical method,indicating the validity of analytical method.更多还原