Sensorless control of permanent magnet in-wheel motor based on improved model reference adaptive strategy

doi:10.3969/j.issn.1674-8484.2022.03.018

Abstract

Abstract:

An improved model reference adaptive system (IMRAS) sensorless control method for permanent magnet in-wheel motor was proposed to improve the operational reliability of the sensorless control algorithm for in-wheel motor drive electric vehicles under variable load and wide rotation speed range operating conditions. Based on the fixed-gain adaptive law design in the traditional model reference adaptive system (MRAS), the nonlinear variable-gain design with active disturbance rejection controller (ADRC) was considered. The fal function was employed to establish the adaptive law with variable-gain nonlinear characteristics, which achieved the accurate estimation of the rotor position and rotation speed of the in-wheel motor. The proposed IMRAS method was verified through simulation and experiments. The results show that the sensorless control algorithm with the proposed IMRAS has strong robustness and high capability of anti-interference and adaption ability, especially in the wide speed range and under conditions of sudden change load.

Key words: in-wheel motor, sensorless control, improved model reference adaptive system (IMRAS), nonlinear adaptive law

CLC Number:

TP273

LI Yong, HU Han, QIN Zhenchao, WU Hao, WANG Wenjun. Sensorless control of permanent magnet in-wheel motor based on improved model reference adaptive strategy[J]. Journal of Automotive Safety and Energy, 2022, 13(3): 560-570.

Figures/Tables 13

References 21

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额定功率,P	0.75 kW
额定电压, U_dc	310 V
额定电流, I	4.2 A
额定转速, n_N	3 000 r/min
额定力矩, T	2.4 Nm
线反电动势, E	44.3 V / (10³r·min^-1)
转子惯量, J	1.4 (10^-4kg·m²)
定子电阻, R	1.176 Ω
电感, L	6.2 mH
永磁磁链, ψ_f	0.048 4 Wb
磁极对数, N_p	4

额定功率,P	0.75 kW
额定电压, U_dc	310 V
额定电流, I	4.2 A
额定转速, n_N	3 000 r/min
额定力矩, T	2.4 Nm
线反电动势, E	44.3 V / (10³r·min^-1)
转子惯量, J	1.4 (10^-4kg·m²)
定子电阻, R	1.176 Ω
电感, L	6.2 mH
永磁磁链, ψ_f	0.048 4 Wb
磁极对数, N_p	4