基于磁链辨识的无轴承薄片电机轴向振动抑制策略

摘要

The axial vibration suppression strategy of BPMSM based on flux linkage was put forward,the axial offset of the rotor could be evaluated by the calculate the flux linkage of the slice rotor,and based the offset,the reference value of d-axial current component (i*d) was given to adjust the axial restoring force of the rotor.The experiment results showed that the proposed the control strategy could suppress the axial vibration of the motor,the system had fine anti-disturbance and dynamic permanence.%为了进一步提高BPMSM的悬浮性能,提出了一种基于磁链辨识的BPMSM轴向振动抑制策略,通过转子磁链的变化来估测转子轴向偏移量,然后将轴向偏移量转化为d轴电流分量参考值i*d,通过对i*d的调节来改善薄片转子的轴向恢复力,实现对轴向振动的有效抑制,从而有效改善电机的悬浮性能.试验结果表明:所提出的轴向振动抑制策略能够对薄片转子轴向振动进行有效抑制,提高系统的抗干扰能力,系统的运行性能得到了有效改善.