| Title |
A Study on the Blocking Torque Characteristics of Dual Winding Motor for Steering System According to Electrical Short Circuit |
| Authors |
Yongchul Kim ; Youngwoo Noh |
| DOI |
http://doi.org/10.5207/JIEIE.2023.37.6.090 |
| Keywords |
Blocking torque; Dual winding; Electrical fault; EPS motor; Short-circuit; Steering motor |
| Abstract |
As vehicle electrification progresses, requirements for vehicle safety standards are also increasing. The dual-winding electric motor was introduced to satisfy the redundancy design standard, an enhanced safety requirement for automobile steering systems, and its most prominent feature is that it can maintain its primary function of assisting the driver’s steering even if a failure occurs. The representative electric fault that can occur in an electric motor is a short-circuit case, and the steering assistance torque that can be delivered from the electric motor is different due to various blocking torque for each case of short-circuit fault. In this paper, we defined the worst-case failure mode by analyzing and comparing the motor characteristics for each electrical fault case. Moreover, it was confirmed that even in this worst-case, the primary function of steering assistance can be maintained by introducing a dual winding motor. |