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Abstract
In motor-drive systems utilized in safety-critical applications and demanding conditions like electric aircraft propulsion systems, the reliability of the system is greatly affected by position sensors, given their susceptibility within the motor drive system. Consequently, there is a need to eliminate sensors in vector-controlled motor drives to decrease overall hardware complexity and expenses, bolster the mechanical durability and dependability of the drive system. In this paper, a fault-tolerant sensorless control system for low inductance coreless axial flux PM (AFPM) machines, integrated into electric aircraft propulsion systems, is introduced. The proposed control system spans a wide operating range, from zero to ultra-high speed, all without the need for a position sensor, enhancing fault tolerance. The system is capable of accelerating the motor from standstill to a certain speed where fundamental signals become available for a flux observer. This observer estimates the rotor position and speed, which are then fed into a field-oriented control scheme. The effectiveness of the introduced control scheme was experimentally verified using a prototype coreless AFPM machine with a PCB stator as a case study.
Document Type
Conference Proceeding
Publication Date
Summer 6-2024
Digital Object Identifier (DOI)
doi: 10.1109/ITEC60657.2024.10598978
Repository Citation
Chulaee, Yaser; Mohammadi, Ali; Cramer, Aaron M.; and Ionel, Dan M., "Sensorless Control of Low Inductance Coreless AFPM Machines for Fault-tolerant Operation of Propulsion Systems" (2024). Electrical and Computer Engineering Graduate Research. 65.
https://uknowledge.uky.edu/ece_gradpub/65
