A SPMSM Hybrid Flux-weakening Control Strategy Based on Lead Angle Combined with MTPV

doi:10.11985/2022.03.013

Abstract

Abstract:

In the infinite speed system of surface permanent magnet synchronous motor, to further improve the speed in constant power flux-weakening operating region, it is necessary to switch the control strategy to make it work in the deep flux-weakening operating region. Whether the switching point is accurate or not directly affects the control stability. First, the out-of-control analysis is carried out, then the optimal switching point is identified between the constant power flux-weakening operating region and deep flux-weakening operating region. Besides, according to the optimal current trajectory, a hybrid flux-weakening control strategy based on lead angle combined with MTPV is proposed to realize the simultaneous control of d, q- axis current, and the control algorithm is simple. Finally, the effectiveness of the control strategy is verified by simulation and experiment.

Key words: Infinite speed system, out-of-control analysis, optimal switching point, hybrid flux-weakening control strategy

CLC Number:

TM351

XIE Mingrui, LAI Jidong, SU Jianhui, ZHOU Chenguang. A SPMSM Hybrid Flux-weakening Control Strategy Based on Lead Angle Combined with MTPV[J]. Journal of Electrical Engineering, 2022, 17(3): 114-121.

Figures/Tables 17

References 20

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参数	数值
额定电压U_N/V	220
额定电流I_N/A	6.5
额定负载T_L/(N·m)	2
绕组电阻R_s/Ω	3
绕组电感L_s/mH	15.67
永磁磁链Ψ_f /Wb	0.094 4
极对数n_p	4
转动惯量J/(kg·m²)	5.33×10^-4