Fault-Tolerant Operation for Single-Phase Open Circuit of Dual-Armature Flux-Switching Permanent Magnet Machine by Connecting Neutral Points

• Published in: IEEE transactions on transportation electrification p. 1
• Main Authors: Yi, Jiali, Wu, Lijian, Lu, Ying, Qi, Zhenya, Zheng, Wenpeng, Zheng, Taiying
• Format: Journal Article
• Language: English
• Published: IEEE 18.07.2024
• Subjects: Circuit faults; Current control; Dual-armature flux switching permanent magnet machine; Fault tolerance; Fault tolerant systems; fault-tolerant; neutral point; Rotors; single-phase open-circuit; Stator windings; Windings
• ISSN: 2332-7782; 2332-7782
• DOI: 10.1109/TTE.2024.3431271

Dual-armature flux-switching permanent magnet machine (DA-FSPM) is a novel multi-phase machine with high power density and strong fault-tolerant capability. The conventional open-circuit fault-tolerant control scheme for the multi-phase machine is based on reconfiguring remaining phase currents. Moreover, the current regulations with better performance can be obtained while the zero neutral point current constraint is relieved. However, the regulation is not achievable without additional hardware and has not been widely applied and studied. Therefore, this paper proposes the single-phase open-circuit (SPOC) fault-tolerant current regulation with better performance for the DA-FSPM based on connecting neutral points of the armature windings. With the unique characteristic of the machine, the zero neutral point current constraint is removed without additional hardware. Comprehensive considering the stator and rotor windings, the current regulations with minimum copper loss are derived under both stator and rotor SPOC faults. The experimental validations are carried out on a DA-FSPM prototype with three-phase stator winding and five-phase rotor winding, which confirm the effectiveness of the proposed operation.