Fault diagnosis and fault‑tolerant control of position sensors for switched reluctance motors

Jie Shao; Longli Deng

Fault diagnosis and fault‑tolerant control of position sensors for switched reluctance motors

Jie Shao

Longli Deng

Vol. 26, No. 4, pp. 794-805, Apr. 2026

10.1007/s43236-025-01115-0

Switched reluctance machine

Hall position sensor

Specific fault state sequence

Fault diagnosis

Fault tolerance control

Abstract

Failure of the position sensor of a switched reluctance motor can lead to problems such as reduced motor output torque and abnormal motor operation. By analyzing the binary combination number of the position sensor output signal, a diagnostic method based on a specific fault state sequence is proposed. The proposed method compares three consecutive adjacent binary combination numbers of the position sensor output with a specific fault state sequence to realize fault diagnosis. Meanwhile, the rotor position angle relationship among the three-phase position signals, along with the calculation formula for updating the rotor position angle in real time based on the fault diagnosis results, is used to implement fault-tolerant control after the fault occurs. The proposed fault diagnosis and fault-tolerant method can accurately locate faulty position sensors and realize fault-tolerant control after a fault occurs. This ensures that the switched reluctance motor can still operate stably under faulty position sensor conditions. Experimental results verify the accuracy and effectiveness of the proposed method.

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Cite this article

[IEEE Style]

J. Shao and L. Deng, "Fault diagnosis and fault‑tolerant control of position sensors for switched reluctance motors," Journal of Power Electronics, vol. 26, no. 4, pp. 794-805, 2026. DOI: 10.1007/s43236-025-01115-0.

[ACM Style]

Jie Shao and Longli Deng. 2026. Fault diagnosis and fault‑tolerant control of position sensors for switched reluctance motors. Journal of Power Electronics, 26, 4, (2026), 794-805. DOI: 10.1007/s43236-025-01115-0.