Driving control with a multi-degree-of-freedom spherical induction motor

doi:10.3969/j.issn.1674-8484.2020.04.014

Abstract

Abstract:

A driving-control-strategy was simulated for a novel multi-degree-of-freedom (multi-DOF) spherical-induction-motor (SIM) to make city-micro-electric-vehicles having omni-directional-steering-function. A multi-DOF driving control strategy was proposed on the base of the design principle and structural characteristics of SIM. Four working sectors were set by analyzing SIM torque output based on the deflection angle of the spherical rotor. The working state of stators was adjusted by judging the sector position where the spherical rotor located; and a direct torque control was adopted to make the torque output of stators on the spherical rotor along the target direction. The results show that this SIM control strategy can achieve rotation driving control at two degrees-of-freedom without any limitation of rotor deflection angle. Thanks for having appropriate dynamic characteristics and tracking performance of the proposed strategy, its reasonable feasibility is verified.

Key words: electric vehicle, multi-degree-of-freedom (multi-DOF), spherical induction motor (SIM), driving control, direct torque control, simulation

CLC Number:

U469.72+2

DING Zhentao, DENG Tao, WU Changjun, YIN Yanli1, ZHOU Dan. Driving control with a multi-degree-of-freedom spherical induction motor[J]. Journal of Automotive Safety and Energy, 2020, 11(4): 538-545.

Figures/Tables 14

References 17

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极数,n_p	5
极距,τ	48.0 mm
定子铁心初度,L	250 mm
绕组因数,k_w1	0.966
定子铁心宽度,2a	45.0 mm
定子每相每极槽数,q₁	2
槽数,S	30
齿距,t₁	8.0 mm
绕组节距,y	6
槽宽,b₀	5.0 mm
槽深,h_t	18.0 mm
转子外径,D	300 mm
气隙,δ	4.5 mm
铜层厚度,d	1.0 mm
钢层厚度,d_s	3.0 mm

极数,n_p	5
极距,τ	48.0 mm
定子铁心初度,L	250 mm
绕组因数,k_w1	0.966
定子铁心宽度,2a	45.0 mm
定子每相每极槽数,q₁	2
槽数,S	30
齿距,t₁	8.0 mm
绕组节距,y	6
槽宽,b₀	5.0 mm
槽深,h_t	18.0 mm
转子外径,D	300 mm
气隙,δ	4.5 mm
铜层厚度,d	1.0 mm
钢层厚度,d_s	3.0 mm

定子电阻,R_s	2.03 Ω
定子电感,L_s	20.0 mH
转子电阻,R_s	7.41 Ω
转子电感,L_r	80.0 mH
互感,L_m	80.0 mH

定子电阻,R_s	2.03 Ω
定子电感,L_s	20.0 mH
转子电阻,R_s	7.41 Ω
转子电感,L_r	80.0 mH
互感,L_m	80.0 mH