公开(公告)号：US20180301968A1

公开(公告)日：2018-10-18

申请号：US15776397

申请日：2015-12-09

申请人： JIANGSU UNIVERSITY

发明人： Wenxiang Zhao ,  Jian Zhu ,  Jinghua Ji ,  Guohai Liu ,  Zhengmeng Liu ,  Qian Chen ,  Jinwei Chen

IPC分类号： H02K21/38 ,  H02K41/03

摘要： Disclosed is a double-stator linear vernier permanent magnet (DS-LVPM) motor and method to increase the magnetic field modulation effect. The motor contains a primary, and first and second secondaries on both sides of the primary, spaced by an air gap. The motor secondary includes modulation teeth. The primary is bilaterally symmetrical, and permanent magnets (PM) are embedded in the yoke of the primary core elements. The design solves the inherent problem of flux leakage at the end of PMs for conventional VPM motors, so as to improve utilization of PMs, thereby increasing thrust density of the motors. Additionally, the motor secondaries are laminated by silicon steel sheet, which saves PM material and significantly reduces cost for linear long stroke applications. By adjusting PM structure parameters, the design can use finite element method (FFM) to calculate repeatedly to get PM structure parameters corresponding to maximum electromotive force (EMF).

公开(公告)号：US10541595B2

公开(公告)日：2020-01-21

申请号：US15776397

申请日：2015-12-09

申请人： JIANGSU UNIVERSITY

发明人： Wenxiang Zhao ,  Jian Zhu ,  Jinghua Ji ,  Guohai Liu ,  Zhengmeng Liu ,  Qian Chen ,  Jinwei Chen

IPC分类号： H02K41/03 ,  H02K21/44

摘要： Disclosed is a double-stator linear vernier permanent magnet (DS-LVPM) motor and method to increase the magnetic field modulation effect. The motor contains a primary, and first and second secondaries on both sides of the primary, spaced by an air gap. The motor secondary includes modulation teeth. The primary is bilaterally symmetrical, and permanent magnets (PM) are embedded in the yoke of the primary core elements. The design solves the inherent problem of flux leakage at the end of PMs for conventional VPM motors, so as to improve utilization of PMs, thereby increasing thrust density of the motors. Additionally, the motor secondaries are laminated by silicon steel sheet, which saves PM material and significantly reduces cost for linear long stroke applications. By adjusting PM structure parameters, the design can use finite element method (FEM) to calculate repeatedly to get PM structure parameters corresponding to maximum electromotive force (EMF).