Position-sensorless and single current sensor control for variable flux machine drive systems in electric vehicles

YU Xiaodong; FANG Ruju; DING Ling; LIU Wuyang; JIN Shibo; LI Yanzhen

doi:10.19783/j.cnki.pspc.260037

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Position-sensorless and single current sensor control for variable flux machine drive systems in electric vehicles

更新时间：2026-07-27

- Position-sensorless and single current sensor control for variable flux machine drive systems in electric vehicles
- Power System Protection and Control Vol. 54, Issue 12, (2026)
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- DOI：10.19783/j.cnki.pspc.260037
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- Published：2026
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YU Xiaodong, FANG Ruju, DING Ling, et al. Position-sensorless and single current sensor control for variable flux machine drive systems in electric vehicles[J]. Power System Protection and Control, 2026, 54(12).
DOI：

YU Xiaodong, FANG Ruju, DING Ling, et al. Position-sensorless and single current sensor control for variable flux machine drive systems in electric vehicles[J]. Power System Protection and Control, 2026, 54(12). DOI： 10.19783/j.cnki.pspc.260037.

摘要

针对电动汽车变磁阻电机 (variable flux reluctance machine

VFRM) 驱动系统安装一个位置传感器和至少两个相电流传感器会增加成本和体积、降低运行可靠性的问题，提出了一种 VFRM 系统的无位置 - 单电流传感器控制策略。首先，构造一种频率自适应复矢量观测器，实现了 VFRM 转子位置和角速度的在线精确估计。然后，设计一种正交信号发生器并结合坐标变换思想，实现了 α、轴电流实时准确重构。最后，仿真和实验结果验证了所提控制策略仅利用一个安装在任一相绕组上的电流传感器就可实现 VFRM 系统的良好运行，为硬件装置提供了一种简单、节省空间和更可靠的工作模式。

Abstract

In variable flux reluctance machine (VFRM) drive systems for electric vehicles

the installation of one position sensor and at least two phase-current sensors increases system cost and size while reducing operational reliability. To address these issues

a position-sensorless and single current sensor control strategy for VFRM drive systems is proposed. First

a frequency adaptive complex vector observer is constructed to achieve accurate online estimation of the rotor position and angular speed of the VFRM. Then

a quadrature signal generator is designed and combined with coordinate transformation principles to realize real-time and accurate reconstruction of the α and β axis currents. Finally

simulation and experimental results verify that the proposed control strategy enables stable operation of the VFRM drive system using only a single current sensor installed in any one phase winding. The proposed method provides a simple

space-saving

and more reliable operating mode for hardware implementation.

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references

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